94results about How to "Strong yield" patented technology

The invention involves a bio-polyol prepared from epoxy rapeseed oil. The preparation method comprises: carrying out ring-opening reaction of epoxy rapeseed oil with an active hydrogen-bearing nucleophilic reagent at the presence of catalyst to obtain the mixed hydroxyl fatty acid triglyceride, and adding alcoholysis agent of alcohols or alkanolamine and heating for alcoholysis reaction to obtain mixed hydroxyl fatty acid monoester, i.e. biological-based polyol. The invention has the advantages of epoxy rapeseed oil being cheap and easy to get or self-design, reduction of dependence on petrochemical products, strong functions and high adjustability, and production of different functionality and pre-designed hydroxyl values of the bio-polyol according to requirements.

The invention discloses a preparation method for a multilayer copper / molybdenum structure composite plate. The multilayer copper / molybdenum structure composite plate prepared by the method has the structure that a layer of molybdenum plate is arranged between two layers of copper plates, and the sum of the copper plate layers and the molybdenum plate layers is five at least. The preparation method comprises the steps of surface treatment, lamination, single-pass hot-rolling compounding, intermediate annealing, accumulative rolling of a multilayer composite plate, finished product annealing and following processing. The copper / molybdenum multilayer material prepared by the method has no interface cracking phenomenon in the rolling process, and the interface has no oxidation phenomenon in the heat treatment process under the condition of argon / hydrogen protection; and the prepared composite plate has the tensile strength of 390-620MPa, the yield strength of 200-300MPa and the elongation of 25-30 percent. The method has the characteristics of simple manufacture process, strong controllability and high yield and the biggest advantage of being available for mass production.

The invention relates to a preparation method of an S-C positive pole microwave composite material of a high cycle performance lithium sulfur battery. Firstly, sulfur, carbon materials are put into a ball mill for ball-milling mixing, and then put into a microwave oven for microwave heating and compositing to prepare the S-C positive pole microwave composite material with high dispersion uniformity. The S-C positive pole microwave composite material and a conductive agent are ground and mixed uniformly, the S-C positive pole microwave composite material and a binder are dispersed in an organic solvent in a certain proportion, and stirred to prepare paste, and then the paste is evenly coated onto a current collector sheet, and dried to prepare a positive pole. The preparation method adopts an advanced microwave heating method, has the advantages of fast heating speed, mild conditions and high efficiency, the prepared positive pole composite material is stable in structure, the battery has good cycle stability, at the same time, the commercial carbon material with low price is used, the material cost is greatly reduced, and the preparation method is suitable for popularization.

The invention relates to a rare-earth molybdenum alloy wire and its process for preparing. The invention is characterized in that the said alloy wire contains two rare-earth oxides including lanthanum oxide and Y oxide(mass %) which is 0.4 %-1.0% of the alloy amount and the proportion by weight of lanthanum oxide and Y oxide is 4:1. The process for preparing is different from the traditional powder metallurgy productive technology, which includes performing double-cone vacuum drying and liquid-solid doping at molybdenum dioxide stage, then performing secondary reduction to prepare binary rare-earth doping molybdenum powder, finally preparing rare-earth doping molybdenum wire with Mo-La-Y of 0.5-0.8mm diameter by impression, agglomeration and pressure processing procedure. Compared with the pure molybdenum, the product is of good high-temperature behavior and high recrystallization temperature which increases by 300-500 DEG C than the pure molybdenum, and is of high intensity and abrasive resistance, low ductility and long durability, which has wide application in the mechanical process industry.

The invention relates to a Mo-La-Ce rare-earth molybdenum alloy wire and its process for preparing. The invention is characterized in that the said molybdenum alloy wire contains 0.4 %-1.0% lanthanum oxide and cerium oxide(mass %) and the proportion by weight of lanthanum oxide and cerium oxide is 4:1. The process for preparing is different from the traditional powder metallurgy productive technology, which includes performing vacuum drying and liquid-solid doping for molybdenum dioxide, lanthanum nitrate and cerium nitrate solution, then performing secondary reduction to prepare binary rare-earth doping molybdenum powder, finally preparing rare-earth doping molybdenum wire with Mo-La-Ce of 0.5-0.8mm diameter by impression, agglomeration and pressure processing procedure. The raw materials of this invention is cheap and facile, and the prepared molybdenum wire is of high tensile strength, strong abrasive resistance and simple process and is inflexible, and has high rate of finished products, good compatibility and long durability.

The present invention is high temperature molybdenum alloy wire and its alloy consists of K 0.05- 1.0 wt%, Si 0.1-0.5 wt% and Al 0-0.05 weight %, except Mo, O and inevitable impurities. The alloy is prepared through double cone vacuum dry liquid-solid doping in the MoO2 stage, secondary reduction to preparing K, Si and Al doped Mo powder, pressing, sintering and other steps, and is further produced into molybdenum alloy wire of 0.5-0.8 mm diameter through press work and other steps. The molybdenum alloy wire has high tensile strength, high wear resistance, simple production process and other advantages.

The invention relates to a process for preparing polyether polyol with vegetable oil owing to the defects of low molecular weight of present polyether polyol and the like, the invention comprises the following procedures: epoxiding the vegetable oil; hydroxylating the vegetable oil; polymerizing the hydroxylated vegetable oil and the epoxidised vegetable oil; neutralizing and deacidifying the product; dewatering in the vacuum-relieving condition; charging the refined agent in order to remove the accelerant; hydrotreating; acquiring 50-120mgKOH / g hydroxyl value vegetable oil group soft bubble and elastic body polyether polyol. The invention has the advantages of easy-getting material, strongly adjustable degree of functionality, narrow distribution of the molecular weight and high activity, which can prepare the product with the degree of functionality, can acquire the cheap material easily, can regenerate and is a environment-friendly product of dynamic optimization, and the technology has strong convergent, low environmental pollution and high product recovery rate, which can improve 'the green content' of polyurethane soft bubble. The product can be applied in polyurethane soft bubble material, elastic body and the like.

The invention discloses a rapid synthesis method of a drinking water treatment agent (i.e. potassium ferrate). The method directly utilizes the industrial pure ferric hydroxide Fe(OH)3, the self-prepared potassium hypochlorite (KClO) saturated solution and the deionized water as raw materials for preparing potassium ferrate. The process comprises the following steps: preparing the potassium ferrate by the potassium hypochlorite (KClO) saturated solution and the industrial pure ferric hydroxide Fe(OH)3, adding the CuCl22H2O stabilizer for solid liquid separation, adding the KOH for recrystallization and purification, and washing and removing impurity by the normal pentane and the inorganic ethanol; and performing vacuum drying and sealing. The method has the advantages of simple process, good quality of the products and low production cost.

The invention discloses a dual-compound wear-resisting hammer comprising a hammer handle and a hammer body; the hammer body is formed by compound casting of two kinds of metal liquids, and the hammer body is in casting connection with the solid hammer handle to form the hammer. The manufacturing method includes the following steps: step 1, manufacturing and casting a sand mold according to a structure of the hammer; step 2, processing the hammer handle with a low-alloy steel blank material, and preburying one end of the hammer handle into the casted sand mold of the hammer; step 3, selecting high-chromium cast iron and carbon steel, and carrying out quantitative pouring in sequence; and step 4, carrying out heat treatment. The dual-compound wear-resisting hammer not only can improve wear resistance of the hammer but also allows the hammer body and the hammer handle to be combined closely and not generate cracks, casting defects are overcome, the product yield is improved, the cleaning workload is reduced, and the quality and the service life of the hammer are improved substantially.

The invention relates to a preparation method of a ceramic plate decorative painting through colored engraving. The method comprises the following steps: 1), a protective film is attached to the surface of a ceramic plate; 2), sidelines of a specified figure are engraved on the surface of the ceramic plate by a laser engraving machine; 3), the protective film at a to-be-etched part is removed so as to expose an engraving surface; 4), the surface of the ceramic plate is eroded by an abrasive material at a high flow rate, so that an uncolored solid figure is formed through engraving on the ceramic surface with the protective film removed, the pressure is 1-10 kg / m<3>, and the flow is 5-20 m<3> / min; 5), sand blasting is at least performed on a to-be-colored part of the surface of the ceramic plate so as to at least remove a glaze layer of the to-be-colored part and form a frosted surface, the sand blasting pressure is 1-10 kg / m<3>, and the flow is 5-20 m<3> / min; 6), the frosted surface of the ceramic plate prepared in the step 5) is cleaned and dried, a pattern is spray-printed and drawn, and a protective glaze layer is spray-printed; 7), the ceramic plate prepared in the step 6) is sintered rapidly.

The invention belongs to the technical field of magnesium-lithium alloy material preparation, and particularly relates to a high-strength high-plasticity high-yield-ratio magnesium-lithium alloy and apreparation method and application thereof. The high-strength high-plasticity high-yield-ratio magnesium-lithium alloy and the preparation method and application thereof are used for solving the problems of low absolute strength, difficult matching of strong plasticity and yield ratio of the magnesium-lithium alloy, the high-strength high-plasticity high-yield-ratio magnesium-lithium alloy material with high yield ratio, good plasticity, stable quality and high purity is obtained by designing the components of the magnesium-lithium alloy, optimizing a vacuum casting process and adopting a novel deformation heat treatment process, and the magnesium-lithium alloy has an industrialized practical application prospect. According to the preparation method of the high-strength, high-plasticity and high-yield-ratio magnesium-lithium alloy, the plastic processing procedure is simple, the maneuverability is high, only medium-high temperature solution treatment and medium-low temperature deformation are needed, intermediate process annealing is not needed, the yield is high, the economical efficiency is high, and the magnesium-lithium alloy product with the tensile strength of 330 MPa, the yield strength of 314 MPa, the elongation of 16% and the yield ratio of up to 95% or above can be obtained through the method.

The invention discloses a high-strength hardened and tempered steel plate for ocean engineering and a production method thereof. The steel plate comprises the components of 0.10%-0.15% of C, 0.15%-0.40% of Si, 1.10%-1.35% of Mn, 0-0.010% of P, 0-0.005% of S, 0.15%-0.45% of Cr, 0.10%-0.30% of Ni, 0.015%-0.028% of Nb, 0.015%-0.042% of V, 0.025%-0.045 % of Al, and the balance Fe and inevitable impurities. The production method comprises the procedures of converter steelmaking, LF refining, VD vacuum treatment, continuous casting, casting blank heating, rolling and hardened-tempered heat treatment. The steel plate is 20-50 mm in thickness, larger than or equal to 480 MPa in yield strength, 620-780 MPa in tensile strength, larger than or equal to 20% in elongation and larger than or equal to 100 J in -40 DEG C longitudinal impact work and has good comprehensive performance.

The invention provides a CNT (Carbon Nano Tube) / nylon6 composite material and a preparation method thereof. The CNT / nylon6 composite material comprises a modified CNT and nylon 6, wherein the modified CNT is a CNT subjected to surface modification, and by adopting weight percent of the CNT / nylon6 composite material as reference, the weight percent of the modified CNT is 1wt%-20wt%. The CNT / nylon6 composite material prepared by the invention has the advantages that the tensile strength is high, the yield strength is strong, and the bending modulus is high; especially, the surface resistance of the material is greatly reduced, and the comprehensive performance of the material is excellent; the dispersity of CNT in PA6 is good, the yield of products is high, the addition amount of the CNT is low, the comprehensive performance of the material can be greatly improved only by 1wt%-2wt% of the CNT, and the cost is low, so that the CNT / nylon6 composite material is suitable for large and industrial production.

The invention discloses a preparation technology of a bamboo columnar carbon with ultrahigh performance. The preparation technology comprises steps as follows: S1), selection of a raw material: the raw material is a bamboo carbonized material; S2), grinding and sieving: the raw material is sieved with a 325-mesh sieve, and the bamboo carbonized material of 325 meshes or fewer than 325 meshes is taken as one raw material; S3), powder grinding and material mixing: a small amount of petroleum asphalt is added to the bamboo carbonized material powder of 325 meshes or fewer than 325 meshes for powder grinding and mixing treatment, and a first mixture is obtained; S4), stirring: water is added to the first mixture for stirring; S5), pre-extrusion; S6), pressing and extrusion molding; S7), segmented drying; S8), carbonizing; S9), gradient type activation: the carbonized material is put in an activating furnace to be activated for 1-2 h at the temperature of 750-850 DEG C and then is activated for 1-3 h after the temperature is increased to 850-950 DEG C, and the bamboo columnar activated carbon is obtained. The bamboo columnar activated carbon prepared with the technology has the characteristics that strength, adsorbability and adsorption capacity are high, the ash content is low, adsorption speed and desorption speed are high, obvious cracks on the outer surface are avoided, the yield of follow-up carbonized and activated products is high and the like.

The invention relates to a method for preparing iron oxide particles having controllable morphology and size. The method comprises the following steps: 1, adding a surfactant into an organic solvent,fully stirring the surfactant and the organic solvent to obtain a uniformly dispersed suspension, adding an inorganic alkali and a soluble iron salt into the suspension, and fully stirring the inorganic alkali, the soluble iron salt and the suspension until the inorganic alkali and the soluble iron salt are completely dissolved; 2, pouring a solution prepared in step 1 into a closed heating container, and carrying out a thermal reaction; and 3, separating a precipitate in the obtained reaction solution through a centrifuging or magnet process, repeatedly washing the precipitate with ethanol and deionized water, and carrying out vacuum drying to obtain a black solid which is the final product. The accurate and highly-efficient regulation of the size and the morphology of nano-particles is realized through adjusting the proportion of the reaction solvent and the addition amount of the inorganic alkali under same reaction conditions, the size of the obtained particles is 20-400 nm, and solid particles, nano-clusters, triangular prisms, regular octahedrons and other various morphologies can be obtained. The preparation method has the advantages of simplicity, and green and environmentally-friendly raw materials and technology, the product has the advantages of high crystallinity, stable structure, uniform size and gram level reaching yield, and the preparation method is of great guidance significance to preparing magnetic nano-particles.

The invention provides a method for preparing porous ceramic by polycrystalline Al#-[2]O#-[3] fiber preforming method which comprises, (1) mixing aluminium oxide powder, clay, high temperature bonding agent, slurry additive by the mass ratio of 70-80, 10-15, 4-19, 1-2 with water, ball grinding to prepare slurry, then mixing slurry, dispergator and pore forming agent to prepare filled slurry, (2) short cutting the polycrystalline Al2O3 ceramic fiber, mixing and dispersing in water, charging binding agent to prepare fabric paste, (3) injecting the fabric paste into die to obtain pre-shaped body and drying, (4) placing the dried pre-shaped body into gypsum die, then injecting into filling slurry and evacuating, (5) subjecting the pre-shaped body filled with slurry to drying and high temperature sintering.

The invention relates to a small substitution group-pyridine diimine and mercury complex of blue-light emitting organic materials and a preparation method thereof, and relates to the light-emitting organic materials and the preparation method thereof. The small substitution group-pyridine diimine and mercury complex solves the problem of lower intensity in light emitting of the existing blue light-emitting organic material. The molecular formula of the pyridine diimine and mercury complex is C21H19N3HgCl2, C23H23N3HgCl2 or C23H23N3HgCl2. The preparation method is as follows: under the nitrogen protection, a ligand and anhydrous HgCl2 are dissolved in an organic solvent and then stirred, and finally recrystallized. The product prepared by the preparation method of the invention is a single crystal with good shape and the light emitting materials produced can emit blue fluorescence by the test and show better monochromaticity. Additionally, the preparation method is simple in operation and high in yield which can reach more than 80 percent.

The present invention relates to a preparation method for a decorative picture of a thousand-layer carved ceramic plate. The method comprises: 1) covering a layer of protective film on a surface of a ceramic plate; 2) using a laser carving machine to carve edge lines of a predetermined pattern on the surface of the ceramic plate, wherein the pattern comprises a plurality of parts; 3) removing the protective film gradually from each part of the pattern, and carving with sandblast until a complete multi-layer carved pattern is formed, wherein a sandblasting pressure adopted in the sandblasting carving is 1-10 kg / m<3>, and a flow rate is 5-20 m<3> / min; 4) sandblasting the surface of the ceramic plate to remove a glazed layer on the surface of the ceramic plate and form a frosted surface, wherein the sandblasting pressure is 1-10 kg / m<3>, and the flow rate is 5-20 m<3> / min; 5) after the frosted surface of the ceramic plate prepared in the step 4) is cleaned and dried, jet printing and drawing the pattern, and then jet printing a protective glazed layer; and 6) sintering the ceramic plate prepared in the step 5) rapidly.

The invention provides a pink plumepoppy herb injection and a preparation method thereof; the pink plumepoppy herb injection is prepared by the raw materials with the following parts by weight: 30-40 parts of pink plumepoppy herb extract, 0-30 parts of latent solvent, 0.5-5 parts of anodyne and 25-70 parts of dispersion medium; the pink plumepoppy herb extract is prepared by the following procedure: pink plumepoppy herb is percolated with sulphuric acid, the percolate is subject to alcohol precipitation and is filtered and then ethanol is recycled; the pink plumepoppy herb injection of the invention can effectively restrain the growth of Gram-positive bacteria and has stronger bacteriostatic action than berberine, and diplococcus pneumoniae, staphylococcus aureus and bacillus subtilis are sensitive to the pink plumepoppy herb injection; meanwhile, the pink plumepoppy herb injection also has the function of resisting nematodes and leptospira and can inhibit and slow the body temperature raise caused by diplococcus pneumoniae; furthermore, the pink plumepoppy herb injection has the efficacies of clearing away heat and toxic materials, resisting bacteria and diminishing inflammation; the indications are yellow and white scour of piglets; the preparation method has convenient operation, high yield, low cost and strong stability of finished products.

The invention relates to a combined technological method for maximum production of light aromatic hydrocarbon from hydrogenated diesel oil. The method includes: firstly letting hydrogenated diesel oil enter an I section adsorption separation device to obtain an I section alkane component rich in cycloalkane and alkane and an I section heavy aromatic hydrocarbon component rich in aromatic hydrocarbon; sending the I section alkane component into a cycloalkane dehydrogenation reactor to obtain a cycloalkane dehydrogenation product rich in aromatic hydrocarbon, conducting gas-liquid separation, and letting the liquid phase enter an II section adsorption separation device so as to obtain an alkane component rich in alkane and an II section heavy aromatic hydrocarbon component rich in aromatic hydrocarbon; letting the I section heavy aromatic hydrocarbon component, the II section heavy aromatic hydrocarbon component and hydrogen enter a heavy aromatic hydrocarbon conversion reactor to obtain a light aromatic hydrocarbon product rich in BTX, and performing separation to obtain hydrogen, returning the hydrogen and part of C9<+> heavy aromatic hydrocarbon together to the heavy aromatic hydrocarbon conversion reactor for further reaction, and taking the rest C9<+> heavy aromatic hydrocarbon, dry gas, liquefied gas, C5-C6 non-aromatics and BTX product as the products. The method realizes maximum production of light aromatic hydrocarbon, and has the advantages of strong raw material adaptability, high yield of light aromatic hydrocarbon, low hydrogen consumption and no need for aromatic hydrocarbon extraction.

The invention discloses a method for preparing a composite wear resistant lining plate. The method comprises the following steps: adopting alloy powder core bar materials of which the volume percentage is between 20 and 60 percent of the total volume of the lining plate, filling alloy powder in the core part of the alloy powder core bar materials, preset the alloy powder core bar materials in a lining plate casting mould, selecting base metal to be melted and poured in the lining plate casting mould, and cooling and demoulding the lining plate to obtain the composite wear resistant lining plate consisting of the alloy powder core bar materials and the base metal. The cylindrical hard phase of the composite wear resistant lining plate prepared by the method is generated by compounding in situ in a matrix, thus the composite wear resistant lining plate has the characteristics that segregation is not generated, the organization structure is even, the hard phase is difficult to fall off, the lining plate not only has the intensity and the toughness of the base metal but also has the high hardness and the high wear resistance of the hard phase, the service life is improved by an order of magnitude compared with the prior lining plate, the lining plate can bearing high impact force and strong wear at the same time, the technological parameter controllability of the preparation process is strong, and the price is low. The composite wear resistant lining plate can satisfy the applications under complex working conditions such as various wears, high impact and the like.

The core part of a preparation method of the Adblue solution is the preparation method of the urea solution; the method comprises the step of dissolving urea crystal in super-pure water to prepare the Adblue solution with the concentration of 31.8-33.3%. The preparation method of the Adblue solution adopts the way of preparing the Adblue solution under forcible mixing and heating condition. The continuous production is realized by using two blending kettles, wherein one of the blending kettles is started and the other is standby. The method is simple in operation, continuous in production, high in production efficiency, high in yield, and capable of saving energy source, and the produced urea solution is strong in activity.

The invention discloses a metal nanocrystalline interface carbon base material super assembly controllable growth method and belongs to the technical field of nano materials. According to the new method, a periodical array structure with a controllable structure is formed, a plasma enhanced chemical vapor deposition (PECVD) method is used for conducting surface carbon base material in-situ cladding on nanocrystalline, and the multi-element super assembly nanocrystalline-carbon base composite material is obtained. The metal nanocrystalline interface carbon base material super assembly controllable growth method has the beneficial effects that the SERS array material prepared by adopting an AAO as the template has a controllable shape and good repeatability, due to the porous array structure, the template structure can be used for conducting effective hot spot regulation, and stability of the method is high. The adopted preparing method is simple, operability is high, the cost is low, environment friendliness is good, efficiency is high, the method can be adopted as a method for large-scale batched production of SERS substrates with good performance, the preparing method is easily used for industrial production, and popularity of the method is high.

The invention relates to nano hydrogel and a preparation method thereof. The nano hydrogel comprises 1-5 parts of a reaction matrix, 1-5 parts of a saccharide compound, 3-20 parts of an alcohol compound, 0.1-0.5 part of an oxidizing agent, 1-5 parts of an alkaline solution, 1-5 parts of a pore-foaming agent, 0.2-1 part of a catalyst, 10-20 parts of an etherifying agent and 10-20 parts of a reaction medium. The nano hydrogel prepared through the preparation method is high in biocompatibility, stable in system, capable of improving the medicine effect of a nano hydrogel carrier and is extremely high in medicine carrying rate and biological antibacterial property.

The invention belongs to the field of agricultural resource environment sustainable development utilization industry, and discloses a carbonization processing method of corn stalk. The carbonization processing method comprises following steps: corn stalk is subjected to pretreatment to increase stalk strength and reduce ash content, gradient charing heating is adopted, so that charing effect is improved, and energy is saved; and at last, activation treatment is carried out, so that gasification reaction and micropore formation rates are increased, the prepared biomass charcoal possesses excellent density and pore structures, the specific surface area is as large as 1200m<2> / g, the adsorption capacity is high, the adsorption amount at room temperature is 140mg / g. The carbonization processing method is capable of improving comprehensive performance of processing of corn stalk into biomass charcoal such as the yield; operation is simple; efficiency is high; operation is convenient, safe,and reliable; energy is saved; and the carbonization processing method is worthy of popularization.

The invention discloses a preparation method of a carbon-silicon solid acid catalyst and application in extraction of organic acid in fermentation broth. The method comprises the following steps: swelling: heating and co-hydrolyzing soluble starch with high content of straight chain molecules and silicate ester for 2 h, aging at room temperature for 1-2 days, exchanging moisture in the system with an organic solvent with lower surface tension than water, and drying; carbonization activation: carrying out one-step carbonization activation by using soluble inorganic salt or strong base under nitrogen protection; and sulfonation: carrying out sulfonation on a carbon-silicon composite material by the use of concentrated sulfuric acid, so as to obtain the carbon-silicon solid acid catalyst. The catalyst is used for extraction of low-concentration organic acid in various fermentation broths. The invention has the following advantages: the synthetic method is green, raw materials are easily available, and discharge of spend liquor and exhaust gas is less; dispersity in an aqueous solution is high; hydrophilicity is strong, and acid value is high; the synthesized material has large specific surface area; synthesis cost is low; catalytic effect is good; and the catalyst can be repeatedly used for many times.

The invention discloses a black tea processing technology which comprises 6 work procedures of a leaf selecting, spreading and airing work procedure, a withering work procedure, a vacuum microwave treatment work procedure, a rolling work procedure, a fermenting work procedure and a drying work procedure. The black tea processing technology specifically comprises the steps: a, the leaf selecting, spreading and airing work procedure: picking fresh tea leaves in a form of two leaves and a bud or three leaves and a bud from camellia arborescens in a green tea garden with altitude of 800 meters or more and putting the fresh tea leaves in a rotary spreading and airing disk to be aired by sunshine; b, the withering work procedure; c, the vacuum microwave treatment work procedure: putting the tea leaves treated in the step b into a vacuum microwave chamber to be treated; d, the rolling work procedure; e, the fermenting work procedure; f, the drying work procedure. According to the black tea processing technology disclosed by the invention, rotary sunshine spreading and airing, vacuum microwave treatment and short-time rolling are combined, so that tea leaf cell disruption rate is improved, tea yield is prevented from being reduced at the same time, and a fermenting effect of tea leaves is ensured; compared with a traditional technology, yield of finished tea products is improved by 10% to 20%, tea shapes are complete, storage life is long, fragrance is strong and durable, and taste is mellow and long.

The invention provides a heteronuclear iridium gold bicyclo metal compound as well as a preparation method and an application of the compound, and belongs to the field of organic synthesis. The technical scheme is as follows: the heteronuclear iridium gold bicyclo metal compound has a general formula as shown in the specification, wherein in the formula, X, X1, Y and Y1 are C atoms or N atoms, the same atoms are used when X is different from Y, and the same atoms are used when X1 is different from Y, Z and Z1 are selected from Cl<-1>, Br<-1> and I<-1>, L is tertiary phosphine ligand or N-heterocyclic carbenes ligand, R and R1 are H or straight-chain alkyl in which C is equal to 1-10. the preparation method comprises the synthesis steps of: adding a mononuclear cyclo-iridium compound, a mononuclear cyclo-gold compound, palladium salt and alkali in an organic solvent; under the protection of N2, carrying out heating reflux; and after the reaction is finished, filtering, drying by distillation, and re-crystallizing, so as to obtain the heteronuclear iridium gold bicyclo metal compound. According to the invention, the bicyclo metal compound is used as a catalyst to catalyze aryl benzyl alcohol, arylamine and alkyne to carry out three-component coupling reaction, so as to synthesize poly-substitution quinoline compound in one step, and the reaction is high in yield and wide in application prospect.

The invention provides a heteronuclear palladium gold bicyclo metal compound as well as a preparation method and an application of the compound, belonging to the field of organic synthesis. The technical scheme is as follows: the heteronuclear palladium gold bicyclo metal compound has a general formula as shown in the specification, wherein in the formula, X, X1, Y and Y1 are C atoms or N atoms, the same atoms are used when X is different from Y, and the same atoms are used when X1 is different from Y, Z and Z1 are selected from Cl<-1>, Br<-1> and I<-1>, L is tertiary phosphine ligand or N-heterocyclic carbenes ligand, R1 and R2 are H or straight-chain alkyl in which C is equal to 1-10. The preparation method comprises the following synthesis steps of: adding mononuclear cyclo-palladium compound containing halogen atoms, mononuclear cyclo-gold compound containing borate ester and alkali in an organic solvent; under the protection of inert gas, carrying out heating reflux; and after the reaction is finished, filtering, drying by distillation, and re-crystallizing, so as to obtain the compound. According to the invention, the heteronuclear palladium gold bicyclo metal compound also is used as a catalyst to catalyze the reaction of O-N-substituted halogeno benzene and alkyne so as to synthesize 1,2-substituted indole, and the reaction is economic and efficient, so that the compound has important application value.

The invention provides a preparation method of alarelin. The method comprises the following steps: (1) activating Boc-Pro: respectively dissolving Boc-Pro and Cs2CO3, mixing the Boc-Pro and the Cs2CO3, and preparing an activated Boc-Pro product Boc-Pro-Cs; (2) curing Boc-Pro: dissolving the Boc-Pro-Cs and a merrifield resin, curing the Boc-Pro, and preparing a Boc-Pro resin; (3) grafting a peptide: sequentially connecting the Boc-Pro resin with Boc-Arg, Boc-Leu, Boc-Ala, Boc-Tyr, Boc-Ser-(But), Boc-Trp, Boc-His-(Tos), pGlu through a one-by-one coupling mode, and synthesizing to obtain an alarelin-resin; (4) conducting aminolysis on the alarelin-resin to remove the resin, transforming into acetate, and obtaining a crude product of alarelin; (5) purifying the crude product of alarelin through HPLC (High Performance Liquid Chromatography), and freeze-drying to obtain a finished product of alarelin. Through the method, the alarelin with high yield and purity is obtained, the reaction is simple and controllable, and the method is suitable for industrial production.