3044results about How to "Lower synthesis cost" patented technology

The invention discloses a process for preparing mordenite / ZSM-5 mixed crystal material, which comprises charging mordenite into ZSM-5 synthesized reaction mixture as seed crystal, and water thermal crystallization. The invention realizes low preparation cost and more ideal catalyzing performance.

The invention relates to a synthesis method of fine grain ZSM-5 zeolite molecular sieve with high silicon aluminium ratio, which comprises using a surface active agent, charging it into acidified aluminium salt solution, then slowly dropping alkaline solution formed from sodium silicate, template agent and seed crystal into aluminium saline solution, the overall composition of the obtained reaction mixture being Na2O:Al2O3:SiO2:H2O=1.5-4.0:1:20-280:500-2000 by mol ratio, then subjecting the reaction mixture to thermal crystallization through the conventional method.

An apparatus for generating a merged audio data stream is provided. The apparatus includes a demultiplexer for obtaining a plurality of single-layer audio data streams, wherein each input audio data stream includes one or more layers, wherein the demultiplexer is adapted to demultiplex each one of one or more input audio data streams having one or more layers into two or more demultiplexed audio data streams having exactly one layer. Furthermore, the apparatus includes a merging module for generating the merged audio data stream based on the plurality of single-layer audio data streams. Each layer of the input data audio streams, of the demultiplexed audio data streams, of the single-layer data streams and of the merged audio data stream includes a pressure value of a pressure signal, a position value and a diffuseness value as audio data.

The invention discloses a universal preparation process for aluminosilicophosphate (SAPO) molecular sieve materials from natural lamellar aluminosilicate minerals. According to the invention, on the basis of the cheap natural lamellar aluminosilicate minerals, the SAPO molecular sieve materials are prepared by carrying out activation, slurrying of ingredients, hydrothermal crystallization and removal of structure directing agents; the natural lamellar aluminosilicate minerals can be fully used as a composite silicon aluminum source, are enabled to completely dissolve by utilizing the reaction activity of an alumina layer with phosphorous species and structure directing agent species under a hydrothermal condition and utilizing dissolving and coordination capacity of a silica layer in a medium, and can assemble anew to form a variety of SAPO molecular sieve materials under the action of the structure directing agents. The process provided in the invention substantially reduces synthesis cost for SAPO molecular sieves; the prepared molecular sieves have variable structure and composition, controllable silicon content and silicon distribution and adjustable acidic site intensity and acidic site distribution; the prepared SAPO molecular sieve materials have a wide application prospect in the fields of catalysis, adsorption, ion exchange, functional materials, etc.

The invention relates to a metal-coated oxide nano core-shell structure catalyst and a preparation method thereof, and in particular relates to a nano fuel cell catalyst with a core-shell structure, and a preparation method of the nano fuel cell catalyst. The invention aims at solving the problems that the conventional fuel cell catalyst is not high in catalytic activity and stability as well as low in cost at the same time. According to the metal-coated oxide nano core-shell structure catalyst, metal uniformly covers a shell, and oxide nano-particles are used as an inner core. The preparation method comprises the steps of: 1, preparing uniform, transparent and stable mixed solution; 2, blending and mixing; 3, adding reducing agent into the mixture; 4, adding extraction agent into the mixture; and 5, carrying out centrifugal washing and drying to obtain the metal-coated oxide nano core-shell structure catalyst. The invention is mainly used for preparing the metal-coated oxide nano core-shell structure fuel cell catalyst.

The invention discloses a method for preparing hierarchical porous titanium silicalite TS-1, which is characterized in that: carbon black is replaced by cheap sugar, and materials such as carbon nanotubes and the like are used as a mesoporous / macroporous template, so the synthesis cost of a molecular sieve is greatly reduced. In the process of preparing dry glue by performing heat treatment on sugar-containing TS-1 molecular sieve synthetic sol, the sugar is heated and part of sugar is carbonized and dehydrated to directly form a hard template, so that high-temperature carbonization under the protection of inert gas is avoided, the complicated process of separately preparing a carbon template and a carbon-silicon complex is saved, and the preparation process of a hierarchical porous zeolite molecular sieve is greatly simplified. The product prepared by the method has the advantages of regular shape and microporous channel of the conventional TS-1, mesopores of 4 to 50nm and macropores of more than 50nm which pass through zeolite, and mutually communicated hierarchical porous channels to overcome the limitation of inherent micropores of the zeolite on catalytic reaction, and can be used for olefin epoxidation, aromatic hydrocarbon hydroxylation, cyclohexanone ammoxidation, oxidation removal of different sizes of sulfides in liquid fuel, and the like.

A method for synthesizing MCM-22 molecular screen, which possesses MWW topological structure, employing silicon, aluminium, alkali, mould agent and deionized water as reacting raw material, blooming under the temperature of 135-185 Deg C for some time, hydrothermal synthesizing the needed molecular screen; the invention is characterized by using diamin liquid mixture (BA) as mould agent to prepare molecular screen, one (SDAI) is hexamethylene amine (HMI), another (SDA2) is any one of the followings: cyclohexylamine (CHA)or buta (BuA) or isopropyl amine (IPA).

The present invention relates to the preparation process of MCM-22 molecular sieve and solves the problems in the preparation process, including high synthesis cost and environmental pollution. The technological scheme of the present invention is that during the preparation of MCM-22 molecular sieve, partial or all the template agent comes from MCM-22 molecular sieve crystallizing mother liquid. The present invention may be used in industrial preparation.

The invention relates to a TiAl intermetallic compound-based solid seif-lubricating composite material which comprises Ti3SiC2, Ti2AlC and C which are used as the ternary composite lubricating phase and TiC which is used as the reinforced phase, and a preparation method thereof. The TiAl intermetallic compound-based solid seif-lubricating composite material is characterized in that the material is prepared from Ti powder, Al powder, Cr powder, Nb powder, B powder and Ti3SiC2 powder, wherein the molar ratio of Ti, Al, Cr, Nb and B is 48:47:2:2:1 and the dosage of the Ti3SiC2 powder is 5-20wt.% of the total weight of the Ti powder, Al powder, Cr powder, Nb powder and B powder. The TiAl / Ti3SiC2-Ti2AlC-C / TiC intermetallic compound-based solid seif-lubricating composite material synthesized by the method is novel in component design (the intermetallic compound matrix, the composite lubricating phase and the reinforced phase), high in density, good in tribological properties, stable in technological parameters, fast and simple in preparation process and easy in operation and the method is suitable to be used to prepare the high performance TiAl intermetallic compound-based solid seif-lubricating composite material.

The invention discloses titanium dioxide nano sheets and a method for synthesizing the same, and relates to a titanium dioxide nano material. The invention provides titanium dioxide nano sheets which are low in cost, high in catalytic activity and good in circularity and a method for synthesizing the same. The nano sheets are mainly in square rectangular shapes. The average thickness of the titanium dioxide nano sheets is 5 to 10nm. The average length of the titanium dioxide nano sheets is 30 to 150nm. The average width of the titanium dioxide nano sheets is 30 to 150nm. The top and bottom surfaces of the titanium dioxide nano sheets are high-activity surfaces (001) and exposed. The catalytic efficiency and the circularity of the titanium dioxide nano sheets are higher than those of commercial titanium dioxide (P25). The synthesis method comprises: placing tetrabutyl titanate and hydrofluoric acid into a reaction kettle and heating the mixture at 170 to 250 DEG C; keeping the temperature for 10 to 36 hours and cooling the mixture to room temperature; and taking out a sample, washing the sample with distilled water, ethanol, NaOH solution and water, and drying the sample to obtain the target product.

The invention discloses a reproducible wet flue gas desulfurization technique, which solves the problems of the prior art of high operation cost and high loss rate when absorbent is in use. The invention is characterized in that after going through a washing tower, flue gas containing gas SO< X > is then connected with the absorbent in a reverse flow in an absorption tower; the purified flue gas is discharged into the atmosphere; a portion of pregnant solution absorbent directly returns to the absorption tower for circular application, wherein SO2 of the flue gas is absorbed by the pregnant solution; a portion of air stripping is used circularly after a regeneration. The invention has the advantages that the energy consumption and operation cost of the technique are low, and loss of the absorbent is small.

The invention discloses a preparation method for mordenite with a high Si / Al ratio and a small crystal particle, which comprises the following steps of: firstly, dissolving an Al source in sodium oxide solution; after an Si source is added, stirring and dispersing for certain time at room temperature and under strong magnetic force; mixing the Al source solution and the Si source solution which are evenly dispersed into glue at the room temperature; adding inorganic lamellar precursors, such as lamellar zeolite molecular sieves, lamellar silicate and the like to serve as seed crystal; after mixture is stirred and mixed evenly at the room temperature and under the strong magnetic force, transferring into a reaction crystallization kettle; at the temperature of 150-170DEG C, carrying out crystallization reaction for 0.5-3 days; and obtaining a solid product after common suction filtration, washing and drying. The synthesis method disclosed by the invention has the characteristics that expensive organic amine template is not used as structure-directing agent, and instead, the easily-obtained inorganic lamellar precursors with abundant source and low price are used as the seed crystal to directly synthesize a mordenite molecular sieve with the high Si / Al ratio. The prepared nanometer mordenite molecular sieve has the advantages of high degree of crystallinity and purity, controllable particle size and morphology, low cost and small environment pollution, and is convenient for industrially producing on a large scale.

A preparation method of a multi-stage pore channel beta molecular screen belongs to the technical field of preparation of a multi-stage pore channel molecular screen. The preparation method is as follows: synthesizing the multi-stage pore channel beta molecular screen in one step by pseudo solid phase aluminosilicate; the molecular screen comprises a honeycomb-shaped structure or a plurality of particles in the size of 5micron to 60micron, the honeycomb-shaped structure or particles are polymerized by small crystal particles of a nano-level molecular screen, and the size of the small crystal particles of the nano-level molecular screen is 10nm to 100nm; and the aperture of one of meso pores formed by the polymerization of the small crystal particles of the nano-level molecular screen is 3nm to 45nm, and the aperture of a micro-pore is 0.6nm to 0.8nm. A second template agent is not in need during the synthesis process, so that the synthesis cost is reduced and the synthesis step is simplified; and in addition, the filtering is not in need after the crystallization is finished, therefore, the yield of the molecular screen is greatly enhanced.

The invention discloses a multi-morphology rare earth doped BiVO4 composite photocatalyst and a preparation method thereof. The composite photocatalyst comprises the component of Ln(1-x)BiVO4, wherein Ln is equal to La, Ce, Pr, Nd, Sm, Gd, Dy, Er and Y, and x is equal to 0.01-0.3mol%. The photocatalyst disclosed by the invention has different morphologies and has the advantages of simple preparation technology, controllable morphology and crystalline phase structure of a target product and big specific surface area, and various organic pollutants, such as toxic and harmful phenols, aldehydes, and dyes, can be decomposed within a wider wavelength range.

The process of preparing catalyst for C8 arene isomerization includes forming the mixture of EUO type molecular sieve and adhesive to obtain carrier, introducing VIII metal, drying, roasting and reducing with reductant gas. The catalyst contains EUO type molecular sieve in 5-90 wt%, adhesive 10-90 wt%, and VIII metal 0.1-5.0 wt%. The EUO type molecular sieve is prepared through mixing compound containing element X, compound containing element T, alkali metal compound and water, hydrothermal crystallization reaction in the presence of template agent precursor compounded with coarse dibromoalkane and monamine, collecting the solid and drying, where X is Si and Ge, T is Al, Fe, Ga or B, and the coarse dibromoalkane is mixture of dibromoalkane in the content of 80-95 wt%, Monobromoalkane and paraffin hydrocarbon diol. The catalyst has high ethyl benzene converting rate and low arene losing rate.

The invention discloses a preparation method of nanometer molecular sieve. The method is to firstly mix hydrocarbon components and surfactants evenly, then add silica gel and silica-alumina gel, and continue to stir until the raw materials are evenly mixed to obtain a super-solubilizing system of oil-in-melt, and then undergo crystallization, drying and roasting Finally, nano molecular sieves are obtained. The crystallization of the molecular sieve in the present invention is carried out in a supersolubilized micelle system of molten silica gel or silica-alumina gel in oil, and the growth of the molecular sieve crystal is limited in the nano-micelle to avoid excessive growth of the molecular sieve crystal. The surfactant and hydrocarbon components used in the method of the invention are used in small amounts and low in cost. The method has a simple process and can be used for large-scale industrial production.

The invention discloses a preparation method for a cathode material Na3V2(PO4)3 / C of a sodium ion battery. The preparation method comprises the following steps of: (1) taking a high-valent vanadium source compound, a sodium source compound, a phosphorus source compound and a reducing agent as raw materials, weighing the reaction raw materials according to the molar ratio of a sodium element, a vanadium element and a phosphorus element of being 3:2:3 and the molar ratio of the reducing agent and the high-valent vanadium source compound of being 3:1 to 15:1, carrying out mechanical ball grinding for 2 to 20 hours, and reducing high-valent vanadium into low-valent vanadium at a normal temperature; and (2) forwarding a precursor obtained through ball grinding in the step (1) into an inert atmosphere or a reducing atmosphere, and carrying out heat preservation for 4 to 20 hours at 600-900 DEG C to obtain the Na3V2(PO4)3 / C. The method has the advantages of short flow and low cost, and is easy to control, the prepared Na3V2(PO4)3 / C is high in purity and crystallinity, and the production of the cathode material Na3V2(PO4)3 / C of the sodium ion battery at a large scale is easy to realize.

The invention discloses a polyurethane aqueous dispersion and a preparation method thereof. The preparation method comprises the following steps: firstly, mixing trimethylolpropane or glycerol and acid anhydride and preparing a carboxylic acid type hydrophilic monomer; on the basis of molar parts, adding 20-60 parts of polymer dibasic alcohol, 4-10 parts of carboxylic acid type hydrophilic monomer and 30-60 parts of a diisocyanate monomer into a reactor, heating to 60 DEG C-100 DEG C and carrying out heat preservation; adding1-10 parts of small-molecular dibasic alcohol, 2-10 parts of a non-ionic hydrophilic chain extender and 1-6 parts of a cross-linking agent and reacting until the content of NCO is less than 5%; and adjusting the viscosity of the reactant, cooling, adding a neutralizing agent for neutralizing, adding water for emulsifying, adding an amine chain extender and removing the solvent by distillation to obtain the polyurethane aqueous dispersion. The carboxylic acid type hydrophilic monomer has stable performance and low cost, the polyurethane aqueous dispersion prepared from the carboxylic acid type hydrophilic monomer has high content of solids and the coating has relatively high hardness and excellent chemical product resistance.

The invention discloses a 3,5-dihalogenation sulfo-benzamide insecticide and preparation method and application thereof. The 3,5-dihalogenation sulfo-benzamide insecticide is represented as a structural formula I. In the formula I: R1 is C1 or Br, R2 is selected from methyl, isopropyl and allyl, and R3 is H or C1. The 3,5-dihalogenation sulfo-benzamide insecticide can be used for prevention and control of agricultural insects or forest insects.

The invention discloses a synthesis method of a polycarboxylic superplasticizer. The raw materials for synthesis of the polycarboxylic superplasticizer are APEG of two types of molecular weight (respectively 500-1000 and 1600-2200), MPEGMA of two types of molecular weight (respectively 800-1400 and 2000-2500), maleic anhydride, acrylic acid, alkylphenol ethoxylate, hydrogen peroxide, ascorbic acid, ferrous sulfate, sodium persulfate, sodium hydroxide and deionized water. Since the APEG and MPEGMA of different types of molecular weight are simultaneously adopted as crossing branch chains, the invention not only has a high water-reducing rate, but also maintains good water-reducing rate, has good adaptability to sands and stones with high clay contents, and improves the strength of concrete, Compared with the prior art, the invention has the advantages that the raw materials of the product are easily available, the synthesis process can be easily controlled, the performance of the reaction product is stable, and the cost is reduced by 5-10 percent.

The invention relates to aerogel and provides a preparation method of transparent silicon dioxide aerogel, which has the advantages of low cost, simple process, short production period, controllable reacting process and continuous production and adopts secondary modification process and normal-pressure drying steps. The preparation method comprises the following steps: 1) solution preparation and silicon source co-precursor hydrolysis; 2) ion exchange and silicon dioxide hydrogel preparation by using gel; and 3) aging, alcoholizing, modifying and normal-pressure drying of the silicon dioxide gel.

A method of synthesizing titanium silicate molecular sieve is to hydrothermally crystallize the hydrolytic solution of silicon and titanium in a closed reaction vessel and then recycle the product. The method is characterized in that the hydrolytic solution of silicon and titanium is gotten by any one of the following three methods: A. under ultrasonic agitation, silicon source is first hydrolyzedin organo-alkali compound solution and then the titanium source is hydrolyzed in the solution; B. under the ultrasonic agitation, titanium source is first hydrolyzed in organo-alkali compound solution and then the silicon source is hydrolyzed in the solution; C. under the ultrasonic agitation, silicon source and titanium source are respectively hydrolyzed in organo-alkali compound solution and then mixed together. The synthetic method can eliminate partial uneven concentration, leads the amount of TiO2 generated by self agglomeration after the hydrolysis of titanium source to be as little as possible and reduces the production of extra framework titanium. Compared with the prior art, the TS-1 molecular sieve synthesized by the method not only has better catalytic oxidation activity and selectivity but also has better stability of catalytic activity.

The present invention provides a double-functional lithium battery electrolyte additive and a preparation method thereof, and relates to the lithium battery electrolyte. The present invention provides the double-functional lithium battery electrolyte additive and the preparation method thereof, wherein the double-functional lithium battery electrolyte additive has a flame retardant performance, even a totally non-combustible characteristic. The double-functional lithium battery electrolyte additive is alkenyl phosphate. Phosphite trimester and alkenyl alkylogen are used as raw materials and react in organic solvent for preparing the double-functional lithium battery electrolyte additive. The double-functional lithium battery electrolyte additive and the routine lithium ion battery electrolyte can form the lithium ion battery electrolyte with double functions. The double-functional lithium battery electrolyte additive belongs to a double-functional additive and has the advantages of: higher phosphorus content and better flame retardation effect, wherein the existence of double bonds causes prior film forming of the double-functional lithium battery electrolyte additive in a discharging process. Compatibility between the electrolyte and a cathode is improved, and thermal stability of the cathode SEI layer is obtained.

Disclosed is a method for synthesizing fine grain MCM22 molecular sieve, wherein the templating agent employs the product yield of hexanolactam hydrogenation, and mainly comprises hexamethyleneimine, water, a small amount of byproduct and hexanolactam (reacted unconcompletely), the method comprises using silicon source, aluminium source, alkali source, templating agent and deionized water as reaction raw material, crystallizing for a finite period of time at 135-185 deg. C, untill completion of the reaction, obtaiting the needed molecular screen through hydrothermal synthesis, the invention is characterized in that organic additives can be charged into the reaction raw material, the organic additive can be sodium dodecylbenzene sulfonate, polyethylene glycol type surface active agent, or their mixture, the molecule ratio of the charged additive and the silicon dioxide in the reaction raw material is 0.01-2.5.

The invention discloses a preparation method of phenolic resin aerogel. The preparation method is characterized in that chitosan, one or more acid, one or more filling materials, one or more phenols, one or more aldehydes, and water or a water-anhydrous ethanol mixture are mixed; the mixture undergoes a hydrothermal reaction to produce phenolic resin organogel; the phenolic resin organogel is immersed in an organic solvent for replacement; and the replacement product is subjected to supercritical CO2 drying so that the phenolic resin aerogel is obtained. The preparation method has simple processes and safe and reliable reactions and realizes adjustment of a structure and mechanical properties of the phenolic resin organogel. The structure and density of the phenolic resin aerogel obtained by drying and porosity and a specific surface area of the derivative porous carbon material obtained by carbonization of the phenolic resin aerogel are adjusted and controlled well.

The invention relates to a preparation method of a ZSM-11 molecular sieve. The method comprises steps of: using an EU-1 molecular sieve as a seed; adding an EU-1 molecular sieve powder into a solution containing sodium hydroxide and a template; stirring uniformly and adding a silicon source to obtain a reaction mixture gel system, wherein a molar ratio of other components needed to be added into the reaction mixture gel system for per 100g of EU-1 molecular sieve seed is as below: 0-0.5 Na2O:0.8-5.0 SiO2:0.1-0.5 (TBA)2O:100(g)EU-1:20-110 H2O; crystallizing the reaction mixture gel under an enclosed condition at 120-180 DEG C for 36-72 h to obtain the ZSM-11 molecular sieve. Compared with a prior art, the invention has shortened crystallization time and reduced synthesis cost.

This invention relates to one polymer enzyme linkage reaction fluorescence test method to dialogue dangerous human body nipple shape virus and to isolate DNA sample HPV gene type to test one set of dangerous HPV infection from patient by the method, wherein, it belongs to life science and biological technique. This invention agent case comprises one fluorescence meter PCR technique as base of multi-layer polymer enzyme reaction composed of multiple HPV positive lead object, reaction lead object and fluorescence detector.

The invention relates to a method for preparing a nano layered ZSM (Zeolite Molecular Sieve)-5 zeolite molecular sieve by using a micro-emulsion. The preparation method comprises the following preparation steps of: preparing a zeolite pecursor solution in an oxide molar ratio of Al2O3 to SiO2, TPA2O, Na2O and H2O as 1:(100-400):(1-100):(300-3000); mixing the prepared zeolite pecursor solution with an oil phase, a surfactant and a co-surfactant in a certain ratio to prepare a W / O (water-in-oil) micro-emulsion, then transferring the prepared micro-emulsion to a crystallization kettle, sealing and statically crystallizing for 6-72 hours at a temperature of 90-120 DEG C. The thin layer of the molecular sieve prepared by the invention has a thickness of about 30nm, a regular shape and a crystallization degree of greater than 90%; the used organic phase can be repeatedly used by separating after the synthetic process of the molecular sieve ends, so that the synthetic cost is reduced; and the method disclosed by the invention is an environmentally-friendly synthetic method.

The invention relates to a dendritic compound using 9,9'-spirobifluorene as a kernel and methoxyl group substituted diarylamine as a branch compound, and the application of the dendritic compound in perovskite solar batteries, and belongs to the field of the preparation of solar battery materials. The preparation method comprises the following steps: firstly, reacting 4,4'-dibrom diphenylamine which is protected through tert-butyloxycarbonyl with 4,4'-dimethoxy diphenylamine or 4,4'-N,N'-(4,4'-dimethoxy diphenyl) diphenylamine so as to generate a branch with a protecting group, and then carrying out deprotection under the action of trifluoroacetic acid so as to generate a first-generation branch and a second-generation branch respectively; reacting the first-generation branch or the second-generation branch respectively with the bromo-9,9'-spirobifluorene compound under the action of a palladium catalyst so as to obtain a first-generation 9,9'-spirobifluorene spirofluorene dendritic compound or a second-generation 9,9'-spirobifluorene spirofluorene dendritic compound. The dendritic compound disclosed by the invention has better heat stability and solubility, is used as a hole transport material for the perovskite solar batteries, and has higher photoelectric conversion efficiency.