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The invention discloses a mesoporous Y-type zeolite molecular sieve and a preparation method thereof. The preparation method comprises the following steps of: firstly preparing a Y-type zeolite guiding agent; and then guiding synthesis of the mesoporous Y-type zeolite molecular sieve by using amphiphilic organosilane N,N-dimethyl-N-[3-(trimethoxysilane)propyl]octadecyl ammonium chloride (TPOAC) as a mesoporous template, wherein siloxane group at the organosilane terminal is firstly hydrolyzed into silicon hydroxyl; then the silicon hydroxyl is linked to a skeleton on the zeolite surface through chemical bonds; and other alkyl terminals are polymerized and then participate in pore expansion. According to the method disclosed by the invention, mesoporous zeolites can be synthesized by using a one-step hydrothermal process; the method is simple in preparation process, easy to operate and low in cost and good in connectivity between mesopores and micropores, and facilitates macromolecular diffusion. As the prepared mesoporous zeolite molecular sieve has the mesopores and the micropores, the defect of a single pore structure is avoided; and the mesoporous Y-type zeolite molecular sieve has broad application prospect in the catalytic field, in particular in macromolecular diffusion-limited reaction.

The invention discloses an electromagnetic shielding material and a nano-grade composite material thereof, and preparation methods thereof. The preparation method of the electromagnetic shielding material comprises the following steps: (1) graphene oxide and carbon nano-tube are uniformly dispersed in a solvent I; and an ultrasonic stripping treatment is carried out, such that a graphene oxide/carbon nano-tube mixed solution is obtained; (2) a metal salt water solution and a surfactant are added, such that a metal salt/graphene oxide/carbon nano-tube mixed solution is obtained; and (3) an irradiation treatment is carried out with gamma rays or electron beams, such that the electromagnetic shielding material is obtained. The preparation method of the electromagnetic shielding-polymer nano-grade composite material comprises the following steps: a polymer and the electromagnetic shielding material are uniformly dispersed in a solvent II, such that a mixed liquid is obtained; and solid is collected, such that the composite material is obtained. The method provided by the invention has the advantages of low cost, low solvent toxicity, simple operation, and mild conditions. The use of a vapor deposition method with complicated processes or a water/solvothermal method with harsh conditions is avoided. Therefore, the method has high applicability, and can be used in macro productions. The method has a good application prospect.

The invention provides a sulfide solid electrolyte based on oxygen doping. The sulfide solid electrolyte is prepared from the chemical ingredients, in percentage by mass: 36-60% of lithium sulfide orlithium selenide, 18-48% of phosphorus pentasulfide or phosphorus selenide, 1-23% of metal oxide or specific nonmetallic oxide and 8-37% of lithium chloride, lithium bromide or lithium iodide. The preparation method of the sulfide solid electrolyte mainly comprises the steps that the raw materials are sufficiently blended and subjected to tabletting, then placed in a quartz tube to be burned and sealed, the product is placed in a muffle furnace and heated to be 400-600 DEG C at a slow heating rate, the optimal heating rate is 0.3 DEG C/minute, heat preservation is conducted for 12-48 hours, and then the product is cooled to reach the room temperature; and the product is ground to be powder, and the sulfide solid electrolyte based on oxygen doping is prepared. The sulfide solid electrolyteis easy to prepare and high in repeatability, the prepared solid electrolyte has the high ionic conductivity and good stability to the air and positive and negative electrodes.

The invention provides a solid-phase synthesis method of carbetocin, and the method comprises the following steps of: sequentially coupling amino acid containing Fmoc (fluorenylmethoxycarbonyl) protecting group by Rink Amide AM Resin to obtain Fmoc-Cys(CH2CH2CH2COOCH2CH2CN)-Pro-Leu-Gly-Rink Amide AM Resin; then sequentially coupling the remaining Fmoc-amino acid, removing the protecting group, and cyclizing to obtain carbetocin-Amide AM Resin; and cracking, purifying and freeze-drying to obtain the carbetocin. The carbetocin is subjected to solid-phase cyclization synthesis by using a novel mercapto protecting group and a false solid-phase dilution principle. The solid-phase synthesis method is simple to operate, low in cost and environmentally-friendly, and meanwhile can be used for greatly improving the purity and the yield as a solid-phase cyclization technology is used at the same time.

The invention relates to a preparation method of a foam graphene thermal interface material with high heat conducting property. The preparation method comprises the following steps: preparing hydrogel with a carbon nanotube reinforced graphene three-dimensional porous structure by utilizing a hydrothermal synthesis method, preparing foam graphene by utilizing a freeze-drying method, wherein a carbon nanotube wound in the graphene three-dimensional porous structure plays a role in reinforcing the graphene Intercalation acting force, the stability of the graphene three-dimensional porous structure can be improved, and the foam graphene has good flexibility. In addition, the high heat conducting property on the graphene two-dimensional plane can be extended into a three-dimensional space through the graphene three-dimensional porous structure, the foam graphene is endowed with excellent macroscopic heat conducting property. The foam graphene thermal interface material is applicable to components of electronic devices, thermal interface heat-conducting layers in an electronically packaged thermal management system, and the like.

The invention belongs to the technical field of pharmaceutical chemistry, relates to a peptide preparation method and particularly relates to a method for preparing teriparatide. The method comprises the steps of (1) sequentially coupling amino acids on a solid-phase carrier, starting from a carbon terminal, according to the amino acid sequence of teriparatide by adopting a solid-phase synthesis method, adopting Boc-Ser-OH as a raw material when 17-th serine is coupled, enabling free hydroxyl of the 17-th serine and carboxyl of 16-th asparagine to be subjected to ester condensation, and then, sequentially coupling the other amino acids; (2) carrying out pyrolysis to obtain crude peptide, and then, converting an ester bond between the 17-th serine and the 16-th asparagine into an amide bond, thereby obtaining a crude peptide solution of teriparatide. The method for preparing teriparatide, provided by the invention, is novel, the purity of teriparatide is improved, the operation is simple, convenient and practical, the total yield is high, the purity is high, the cost is low, and the industrial production is facilitated.

The invention belongs to the technical field of nano materials, and particularly relates to a graphene oxide for electrochemical reduction and a preparation method of graphene. The method comprises the following steps: dissolving graphite oxide in deionized water, and carrying out ultrasonic peeling to obtain a graphene oxide solution; cleaning electrodes and a glass container; adding the graphene oxide solution into the glass container; connecting one end of a copper conductor with cathode and anode materials, putting the electrodes into the graphene oxide solution, and respectively connecting the other end of the copper conductor with positive and negative poles of a direct-current stabilized voltage supply; switching on the direct-current stabilized voltage supply, wherein the voltage is controlled at 10-50V, and the temperature is controlled at 25-90 DEG C; and carrying out electrochemical reduction for 1-60 minutes, thereby obtaining the graphene. The graphene prepared by the method provided by the invention has the advantages of high quality; and the method is simple to operate, and has the advantages of low cost, high safety, no pollution, high-efficiency and the like.

The invention discloses a platinum (Pt)/reduced graphite oxide (RGO) nano composite material and a preparation method and application thereof. According to the preparation method, graphite oxide (GO) and a platinum metal precursor are reduced in one step by radiation and induction of a gamma ray or an electronic beam, thus obtaining the Pt/RGO nano composite material with the Pt load capacity being 1.0wt% to 15wt%; Pt nano particles are uniformly distributed on an RGO sheet layer, and the average diameter of the Pt nano particles is 1.8 nanometers; and the particle sizes of the Pt nano particles are within 2 nanometers. By virtue of the load capacity of the nano particles of platinum metal, the reducing degree of the GO can be increased, the conductivity of a product is improved, and the surface utilization rate of the RGO sheet layer is increased. Compared with the GO and pure graphene, the nano composite material prepared by the method has higher specific capacitance and higher high-current multiplying power when being applied to a super-capacitor electrode material.

The invention discloses a liquid enzyme preparation and a preparation method thereof and mainly solves the technical problem that a glutamine transaminase liquid preparation is hard to preserve at the normal temperature. According to the technical scheme, the enzyme preparation is a liquid preparation of glutamine transaminase EC2.3.2.13, and the constituent content of the enzyme preparation is that enzyme activity of the glutamine transaminase liquid preparation is 10-1000 u/ml, the weight volume percentage content of a water activity conditioning agent is 30-80%, the weight volume percentage content of a redox potential conditioning agent is 0.0075-1%, the weight volume percentage content of a food preservative is 0-0.1%, and a pH conditioning agent is supplemented to 100% in volume. The preparation method of the liquid enzyme preparation comprises the steps of enzyme liquid purification, mixing, sterilization and bottling to obtain a finished product. By means of the liquid enzyme preparation and the preparation method thereof, the enzyme activity of the enzyme preparation preserved for six months at the normal temperature can be maintained at 80% or above, the character is stable, no microbial spoilage is caused, and the using effect is good.

The invention provides a method for recycling lithium in waste lithium battery slags through chloridizing roasting and evaporation and belongs to the field of resource recycling. The method comprisesthe following steps: uniformly mixing pulverized lithium slags with a certain quantity of metal chloride; and then, roasting mixed lithium slag and metal chloride at high temperature, and transferringlithium in the lithium slags into a gas-phase removing system in the form of lithium chloride. The problem that the lithium in the waste lithium batteries is difficult to recycle by thermometallurgytreatment is solved. The molar ratio of chlorine in the metal chloride and the lithium in the lithium slags is 1: 1 to 2:1, and the roasting temperature is 800-1200DEG C. The method is simple to operate, causes small pollution, and is high in economical benefit and suitable for industrial popularization.

The invention provides a production method of an amino acid complex microorganism fertilizer, in particular to a method for producing an amino acid complex microorganism fertilizer by using amino acid organic granules. The method comprises the following steps: preparing solid inoculant; pelleting amino acida liquid waste into organic granules; compounding the organic granules with solid powders; when compounding, adding powdery inoculant which accounts for 5-15% of the finished product complex microorganism fertilizer at weight ratio; and mixing, pelleting and drying, wherein the material temperature in a drying cylinder is not higher than 80 DEG C. The production method provided by the invention breaks the normal procedure and is divided into two steps of pelleting of the organic granules and the package of the organic granules, as well as ensures viable count in the complex microorganism fertilizer. The production method of the complex microorganism fertilizer provides a new process which realizes the breakthrough of the process from powder pelleting by a disc and a roller to spraying granulation, thus improving commodity and effectiveness of the complex microorganism fertilizer and laying a foundation for popularization.

The invention relates to a Prussian blue-based intelligent pH-triggered MRI drug release-monitoring synergetic nanometer diagnosis and treatment agent and a preparation method thereof. The nanometer diagnosis and treatment agent comprises hollow Prussian blue nanometer particles with mesopores. The surfaces of the hollow Prussian blue nanometer particles with mesopores are coated with KxMny[Fe(CN)6]z, wherein x is greater than or equal to 0.05 and less than or equal to 0.3, y is greater than or equal to 0.5 and less than or equal to 0.98 and z is equal to 1. The nanometer diagnosis and treatment agent comprises hollow mesoporous nanometer particles with core-shell structures. The HMPB-Mn nanometer diagnosis and treatment agent is used for tumor part pH-sensitive MRI and pH-sensitive drug release control in chemotherapy. Through combination with thermotherapy, MRI-guided thermotherapy-chemotherapy combined treatment on tumors is realized.

An efficient composite paint for the investment casting contains primary component (20-28 Wt%) prepared from two or more of water glass, silicon sol and ethyl silicate, refractory powder (70-76) and secondary component (1-5). Its advantages are high stability, high hardening speed, high wettability and high high-temp strength.

The invention relates to a wastewater treatment adsorbent, and particularly relates to a preparation method and application of composite bentonite for wastewater treatment. The composite bentonite is prepared from the following raw materials in parts by weight: 50 parts of bentonite and 0.5-2 parts of graphite oxide; the preparation method comprises the following steps: dispersing the bentonite in water by using ultrasonic waves to obtain a uniform bentonite suspension; dispersing the graphite oxide in water, and stripping by using ultrasonic waves to obtain a uniform graphite oxide solution; and mixing the bentonite suspension with the graphite oxide solution, centrifugally dehydrating and washing, and drying to obtain the composite bentonite for wastewater treatment. The composite bentonite for wastewater treatment, disclosed by the invention, is simple in synthesis method, low in production cost, simple to operate when used for removing organic dyes from water, friendly to environment, obviously better than existing natural bentonite in organic dye adsorption and good in industrial application prospect.

The invention provides a preparation method of a flocculant capable of removing phosphate from red mud, belonging to a preparation process of a flocculant for feed water and waste water treatment and relating to the field of sewage treatment in environment conservation. The preparation method comprises the following steps: adding alumyte and red mud particles in industrial hydrochloric acid, and performing the steps of mixing, reacting, aging and the like, so as to obtain the flocculant capable of removing phosphate. The flocculant produced by the preparation method is good in stability, and is suitable for the purification treatment of feed water and waste water; the effect of the flocculant is superior to that of the common polyaluminium chloride; and the preparation method is simple, is easy to achieve industrial production and has a wide open application prospect.