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65 results about "Solution synthesis" patented technology
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Two-dimensional porous carbon skeletal nano-material and preparation method thereof
InactiveCN105964257ALarge specific surface areaUnique pore structureHybrid capacitor electrodesCell electrodesElectricityPorous carbon
The invention discloses a preparation method of a two-dimensional porous carbon skeletal nano-material. The method comprises the following steps: growing various metal organic frame nano-arrays on the surface of a two-dimensional layered nano-material in an orientated manner through room temperature solution synthesis by using the coordination effect of a metal and an organic ligand and the surface confinement effect of two-dimensional layered metal hydroxide with two-dimensional layered hydroxide as a template, and roasting the various metal organic frame nano-arrays in inert atmosphere to obtain the two-dimensional porous carbon skeletal nano-material with a regular structure. The method realizes orientated growth and artificial regulation of the metal organic frame material in the nanometer level for the first time, and the two-dimensional porous carbon skeletal nano-material prepared through roasting can be widely applied to the fields of electrocatalysis and electrochemical energy storage due to its specific surface area, unique tunnel structure and excellent electric conductivity.
Owner:BEIJING UNIV OF CHEM TECH
Waterproof-level soy protein adhesive and preparation method thereof
ActiveCN104497965AFacilitate cross-linkingImprove water resistanceProtein adhesivesGlue/gelatin preparationAdhesiveWorking life
The invention provides a waterproof-level soy protein adhesive and a preparation method thereof and relates to an adhesive and a preparation method thereof, in particular to a modified soyabean protein adhesive for waterproof-level plywood. The waterproof-level soy protein adhesive aims at solving the technical problem that an existing adhesive for plywood is not waterproof. The preparation method comprises the steps of beam flour acid heat treatment, beam flour liquidation, polyamide solution synthesis and adhesive modulation. Degreased beam flour or soya bean meal left after soybean oil expelling is used as a main raw material, the water resisting property of the beam flour and the solid content of the soy protein adhesive are improved through acid heat treatment, the cross-linking efficiency, cementing effect and process usability of the soy protein adhesive are improved through liquidation, the water resisting property of the soy protein adhesive is improved through cross-linking of polyamide polyamine resin, and finally the soy protein adhesive high in beam flour content, low in viscosity, long in working life and good in water resisting property and used for the waterproof-level plywood is prepared. The waterproof-level soy protein adhesive and the preparation method belong to the field of adhesive preparation.
Owner:浙江蓝歌新材料科技有限公司
Gels derived from extending grafted comb polymers and polypropylene via a solution synthesis
The present invention teaches a method for enabling the formation of a high damping, soft polymer gel. The method includes: reacting in a suitable solvent a poly(alkenyl benzene-co-maleic anhydride) and a primary amine to form a poly(alkenyl benzene-co-maleimide) polymer. The poly(alkenyl benzene-co-maleimide) polymer while remaining in solvent is grafted with a maleated polyalkylene through the use of a grafting agent such as an alkyl diamine to form a polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product. The solvent is then removed from the polyalkylene grafted poly(alkenyl benzene-co-maleimide) polymer product and the polymer is mixed with extender such as oil sufficient to form the gel. During oil extension the graft copolymer is further crosslinked due to the presence of additional alkyl diamine.
Owner:BRIDGESTONE CORP
Cardanol-aromatic diamine type benzoxazine flexibilizer as well as preparation method and purposes thereof
The invention discloses a cardanol-aromatic diamine type benzoxazine flexibilizer as well as a preparation method and purposes thereof. Cardanol, aromatic diamine and formaldehyde are used as raw materials, and are reacted under an alkali condition by adopting a solution synthesis method to obtain the cardanol-aromatic diamine type benzoxazine flexibilizer with high yield and high purity; in the structure, flexible aliphatic side chains of the cardanol can remarkably improve the toughness of condensates, can reduce the melt viscosity of resin systems, and can modify the forming processability; and rigid benzene ring structures of the aromatic diamine can retain high heat resistance and mechanical strength of the condensates. The benzoxazine flexibilizer is used for preparing high-performance structural materials, electric insulation materials or electronic packaging materials through lamination, mould pressing and RTM (Release to Manufacture) techniques after being mixed with epoxy resin, phenolic resin, cyanate ester resin, bismaleimide resin and other benzoxazine resin.
Owner:SICHUAN UNIV
Solution Synthesis of Peptide Cell Growth Stimulators
InactiveUS20090215986A1Improve productivityTripeptide ingredientsPeptide preparation methodsGrowth stimulantBiological property
A solution phase synthetic method for preparing basic tripeptides of the formula Gly-Xaa-Gly-X which have in various biological properties such as stimulating protein production when used as additives in a bioreactor. The basic tripeptides of the invention may be produced on gram or kilogram scale.
Owner:EPSTEIN DAVID +3
Solution synthesis method of atomically-dispersive metal oxygen reduction catalyst
ActiveCN108654701AHigh densityIncrease productionCatalyst activation/preparationMetal/metal-oxides/metal-hydroxide catalystsHigh densityOxygen
The invention provides a solution synthesis method of an atomically-dispersive metal oxygen reduction catalyst, comprising: (1) mixing a metal compound and a first solvent to form a metal precursor solution; (2) mixing a reducing agent and a second solvent to form a reducing agent solution; (3) mixing a carrier material and a third solvent to form a dispersion; (4) mixing the metal precursor solution and the reducing agent solution by dropwise adding and stirring so as to obtain a solution containing an atomically-dispersive metal; and (5) adding the dispersion into the solution containing theatomically-dispersive metal, stirring such that the carrier material is used to adsorb the automatically-dispersive metal to obtain the atomically-dispersive metal oxygen reduction catalyst, whereinthe steps (4) and (5) have the ambient temperature of -100 DEG C to 0 DEG C. The catalyst prepared via the method has the advantages of high density, high yield, high efficiency, high applicability and the like, the method is suitable for large-scale preparation of catalysts having high metal loading capacity, and the cost is significantly reduced.
Owner:TSINGHUA UNIV
Surface modification method for calcium sulfate whiskers
InactiveCN105350084AReduce the burden onHigh hardnessPolycrystalline material growthAfter-treatment detailsAnhydrous Calcium SulfateWater processing
The invention discloses a surface modification method for calcium sulfate whiskers. The surface modification method comprises steps: anhydrous calcium sulfate whiskers are prepared; a surface modifier solution is prepared; the calcium sulfate whiskers are added slowly into the surface modifier solution with stirring, slow stirring is carried out, and a reaction is carried out; the modified anhydrous calcium sulfate whiskers are subjected to impurity removal processing. The method is simple, the steps are few, raw materials are saved, water processing burden is reduced, the anhydrous calcium sulfate whisker product has good performance, and tensile strength, the tear resistance, the folding strength and the pop strength are high. The solution synthesis method is employed, a calcium-containing industrial tail liquid is reacted with sulfuric acid, calcium sulfate whiskers are prepared, the cleaning utilization problem of calcium ions in the waste liquid is solved, which facilitates to achieve cyclic utilization of raw materials and resources are saved. The yield of the prepared calcium sulfate whiskers is high, the crystal form is structured and the length-to-diameter ratio is high.
Owner:SHANDONG UNIV OF SCI & TECH +1
Solution Synthesis of Peptide Cell Growth Stimulators
InactiveUS20070213505A1Enhancing bioreactor productivityDecreasing extent of apoptotic deathTripeptide ingredientsPeptide preparation methodsGrowth stimulantBiological property
A solution phase synthetic method for preparing basic tripeptides of the formula Gly-Xaa-Gly-X which have in various biological properties such as stimulating protein production when used as additives in a bioreactor. The basic tripeptides of the invention may be produced on gram or kilogram scale.
Owner:EPSTEIN DAVID +3
Method of preparing transparent and decorated fireproof coating with two components
InactiveCN102746764AWide variety of sourcesLow costFireproof paintsPhosphorus organic compoundsPentaerythritolPolyethylene glycol
The invention relates to a method of preparing a transparent and decorated fireproof coating with two components. The method comprises steps of: preparing a polyethylene-glycol-grafted polyphosphate by using polyphosphoric acid, pentaerythritol and polyethylene glycol through a solution synthesis method; preparing an aqueous solution or an ethanol solution with a certain concentration of the grafted polyphosphate, and blending the solution with an aqueous amino resin by stirring to get the transparent and decorated fireproof coating with two components. According to the present invention, the preparation method is simple and feasible, the cost is low, and the prepared transparent and decorated fireproof coating with two components can greatly improve flexibility of a coating film on the basis of ensuring excellent fireproof property of the coating.
Owner:TONGJI UNIV
Method of monitoring PCMO precursor synthesis
ActiveUS7625595B2Semiconductor/solid-state device testing/measurementVacuum evaporation coatingSpectroscopySolution synthesis
A method of monitoring synthesis of PCMO precursor solutions includes preparing a PCMO precursor solution and withdrawing samples of the precursor solution at intervals during a reaction phase of the PCMO precursor solution synthesis. The samples of the PCMO precursor solution are analyzed by UV spectroscopy to determine UV transmissivity of the samples of the PCMO precursor solution and the samples used to form PCMO thin films. Electrical characteristics of the PCMO thin films formed from the samples are determined to identify PCMO thin films having optimal electrical characteristics. The UV spectral characteristics of the PCMO precursor solutions are correlated with the PCMO thin films having optimal electrical characteristics. The UV spectral characteristics are used to monitor synthesis of future batches of the PCMO precursor solutions, which will result in PCMO thin films having optimal electrical characteristics.
Owner:XENOGENIC DEV LLC
Method for liquid-solid-solution synthesis of rare earth doped fluorine zinc potassium luminescent material
The invention provides a method for synthesis of KZnF3:Eu<3+>;Tb<3+>;Eu<3+> / Tb<3+>;Eu<3+> / Tb<3+> / Tm<3+> micron-crystal. The XRD spectrum of the micro-crystal completely matches with the standard card PDF#06-0439 main diffraction peak, and the prepared cubic phase crystal belongs to the Pm-3m (No.221) point group. Through calculation by the Jade 5.0 software, the cell parameters of the KZnF3 micro-crystal synthesized by ''liquid-solid-solution (LSS)'' interface phase transfer-phase separation mechanism can be obtained, i.e. a=4.056, Z=1. The photoluminescence spectrum shows that Eu<3+> / Tb<3+> / Tm<3+> tri-doped KZnF3 can produce white light emission, and the fluorescent powder micron material has potential extensive application in LED and other fields.
Owner:CHANGCHUN UNIV OF SCI & TECH
High-purity iron p-toluenesulfonate solution synthesis method
InactiveCN105017091AFerric hydroxide is activeHigh puritySulfonic acids salts preparationReaction intermediateImpurity ions
The present invention belongs to the technical field of electronic chemical production, and particularly relates to a high-purity iron p-toluenesulfonate solution synthesis method, which comprises: 1) preparing a ferric sulfate solution and a sodium hydroxide solution; 2) preparing ferric hydroxide floc; 3) preparing ferric hydroxide filter cake having sulfate ions achieving the standard; 4) preparing a p-toluenesulfonic acid solution having qualified sulfate ions; and 5) preparing the high-purity iron p-toluenesulfonate solution. According to the present invention, the prepared reaction intermediate ferric hydroxide has good activity and completely reacts with p-toluenesulfonic acid, the product has high purity, and the impurity ions are less.
Owner:武汉海斯普林科技发展有限公司
Method for preparing cyclohexanone with cyclohexane liquid-phase oxidation process
InactiveCN105601486ASimple processLow costCarbonyl compound separation/purificationCyclohexanoneAlcohol
The invention discloses a method for preparing cyclohexanone with a cyclohexane liquid-phase oxidation process. The method comprises processes including cyclohexane oxidation reaction solution synthesis, oxidation solution decomposition and washing, triple-effect alkane tower rectification, alkane four-tower rectification, twice saponification, coarse alcohol ketone continuous rectification and obtaining of cyclohexanone. The method is characterized in that the sequence of the processes is cyclohexane oxidation reaction solution synthesis, oxidation solution decomposition and washing, triple-effect alkane tower rectification, twice saponification, alkane four-tower rectification and coarse alcohol ketone continuous rectification to obtain cyclohexanone. The method can fully decompose cyclohexyl hydroperoxide, substantially reduce impurities such as aldehyde, ester and miscellaneous ketone in cyclohexanone, and improve the quality of cyclohexanone. The method has the advantages of simple process, low investment and cost, good separation effect and apparent impurity removal.
Owner:QUZHOU JUHUA POLYAMIDE FIBER
Low-temperature alkaline-solution synthesis of oxygen metal inorganic compound monocrystal nano-material
InactiveCN1896341AUniversal synthesis methodSuitable for synthesisPolycrystalline material growthSingle crystal growth detailsSemiconductor materialsInorganic compound
The present invention discloses a hypothermal alkali liquation synthesis process of monocrystalline nanometer materials of oxygenous metal inorganic compounds. The compound oxide monocrystalline nanometer materials are synthesized with the inorganic salt of a metal and the oxide of another metal as main materials, melted mixed alkali as solvent, at atmospheric pressure and relatively low temperature of about 200DEG C. The present invention uses melted alkali as solvent for the first time and can synthesize oxide nanometer materials of different structures, compositions and functions, or monocrystalline nanometer materials of simple oxide and hydroxide. This process utilizes conventional materials and only controls the time and temperature during synthesis in favor of the industrial application. The produced monocrystalline nanometer materials includes ferroelectric and piezoelectric materials, ferromagnetic materials, semiconductive materials, ionic conductive materials, colossal magnetoresistance materials, high dielectric materials superconductors and etc. that can be applied to microelectronics, photoelectronics and communication.
Owner:SHANDONG UNIV +2
Solution synthesis of germanium nanocrystals
A method for providing a route for the synthesis of a Ge(0) nanometer-sized material from. A Ge(II) precursor is dissolved in a ligand heated to a temperature, generally between approximately 100° C. and 400° C., sufficient to thermally reduce the Ge(II) to Ge(0), where the ligand is a compound that can bond to the surface of the germanium nanomaterials to subsequently prevent agglomeration of the nanomaterials. The ligand encapsulates the surface of the Ge(0) material to prevent agglomeration. The resulting solution is cooled for handling, with the cooling characteristics useful in controlling the size and size distribution of the Ge(0) materials. The characteristics of the Ge(II) precursor determine whether the Ge(0) materials that result will be nanocrystals or nanowires.
Owner:NAT TECH & ENG SOLUTIONS OF SANDIA LLC
Preparation method of nanosilver conductive ink
The invention discloses a preparation method of nanosilver conductive ink, and belongs to the field of printing materials. The preparation method is characterized by comprising the following steps: taking silver nitrate and PVP (Polyvinyl Pyrrolidone), adding the above substances into water, and intensively stirring under a magnetic stirrer until a solution is colorless and transparent; preparing a sodium borohydride solution; taking the sodium borohydride solution, and adding into the prepared silver nitrate solution; centrifuging a filtered reactant; drying a centrifuged product in an air blast drying box at the drying temperature of 45 to 60 DEG C, so as to obtain nanosilver powder; adding the nanosilver powder into a dispersing solvent, stirring and performing ultrasonic dispersion, thus obtaining the nanosilver conductive ink. According to the preparation method, a solution synthesis method is used to generate nanosilver particles wrapped by a surfactant in an aqueous solution. agglomerated large particles and impurities are removed by filtering,then centrifuging is performed repeatedly, and nanosilver powder is cleaned by sequentially using deionized water, acetone and ethanol; the nanosilver conductive ink has the advantages of low requirement on environment and equipment, good particle dispersity and uniform particle size; the preparation method disclosed by the invention has the advantages of small particle size of the particles, good dispersity and mild reaction conditions.
Owner:SHAANXI HUANKE BIOLOGICAL TECH CO LTD
Metal organic deposition precursor solution synthesis and terbium-doped SiO2 thin film deposition
InactiveUS20080026590A1Semiconductor/solid-state device manufacturingLiquid/solution decomposition chemical coatingOrganic acidEther
A method of making a doped silicon oxide thin film using a doped silicon oxide precursor solution includes mixing a silicon source in an organic acid and adding 2-methoxyethyl ether to the silicon source and organic acid to from a preliminary precursor solution. The resultant solution is heated, stirred and filtered. A doping impurity is dissolved in 2-methoxyethanol to from a doped source solution, and the resultant solution mixed with the previously described resultant solution to from a doped silicon oxide precursor solution. A doped silicon oxide thin film if formed on a wafer by spin coating. The thin film and the wafer are baked at progressively increasing temperatures and the thin film and the wafer are annealed.
Owner:SHARP KK
Preparation method of waterproof grade soybean protein adhesive
ActiveCN104497965BImprove water resistanceImprove cross-linking efficiencyProtein adhesivesGlue/gelatin preparationAdhesivePolyamide
The invention provides a waterproof-level soy protein adhesive and a preparation method thereof and relates to an adhesive and a preparation method thereof, in particular to a modified soyabean protein adhesive for waterproof-level plywood. The waterproof-level soy protein adhesive aims at solving the technical problem that an existing adhesive for plywood is not waterproof. The preparation method comprises the steps of beam flour acid heat treatment, beam flour liquidation, polyamide solution synthesis and adhesive modulation. Degreased beam flour or soya bean meal left after soybean oil expelling is used as a main raw material, the water resisting property of the beam flour and the solid content of the soy protein adhesive are improved through acid heat treatment, the cross-linking efficiency, cementing effect and process usability of the soy protein adhesive are improved through liquidation, the water resisting property of the soy protein adhesive is improved through cross-linking of polyamide polyamine resin, and finally the soy protein adhesive high in beam flour content, low in viscosity, long in working life and good in water resisting property and used for the waterproof-level plywood is prepared. The waterproof-level soy protein adhesive and the preparation method belong to the field of adhesive preparation.
Owner:浙江蓝歌新材料科技有限公司
Method for mother solution pretreatment and cyclic utilization in chain type ferrous glycine complex synthesis
InactiveCN105237425AFor long-term storageReduce the degree of oxidationOrganic compound preparationAmino-carboxyl compound preparationFiltrationStrong acids
The invention provides a method for mother solution pretreatment and cyclic utilization in chain type ferrous glycine complex synthesis, and belongs to the technical field of third-generation microelement feed additive-chain-type ferrous glycine complex preparation. The method comprises the main steps that a ferrous glycine complex synthesis mother solution is stored in strong acid; when the mother solution is recycled, waste scrap iron is adopted as a reducing agent, a reaction and hydrolytic precipitation are performed on the high temperature and strong acid conditions, suction filtration is performed at the high temperature to a reaction kettle, and the mother solution is pretreated and recycled. The method has the advantages that the storage time and the oxidation degree of the mother solution do not need to be considered, the low-cost waste scrap iron is utilized for replacing high-cost reduced iron powder as a reducing agent, the pH needed in the mother solution synthesis can also be ensured, meanwhile, flocculation and coprecipitation can also be performed in the circulating mother solution for accumulating impurities, the product quality is improved, and operation is easy and convenient.
Owner:CENT SOUTH UNIV
Preparation method of low-temperature graphene-based nanoborate composite material
The invention discloses a preparation method of a low-temperature graphene-based nanoborate composite material. The preparation method comprises the following steps: 1) firstly, mixing graphene oxide, alkyl phenol, NN-dimethyl acetamide and water by using an ultrasonic method, and then performing ultrasonic dispersion to obtain mixed liquid; 2) adding calcium hexadecyl borate and nanometer cerium borate into the mixed liquid while stirring by using a motor, keeping the constant temperature for a certain time, continuing stirring and slowly adding sodium borohydride and sodium citrate to form a mixed solution; 3) performing a refluxing reaction in an oil bath at the reaction temperature of 150-200 DEG C while stirring by using a motor-driven stirrer, performing hot suction filtration after the reaction, washing and drying to obtain the graphene-based nanoborate composite material. By the preparation method, a solution synthesis method is adopted, the graphene oxide is reduced and the nanoborate composite material is prepared; by the preparation method, the main process is simple, the reaction condition is mild, the batch production is easily achieved and the the operation is convenient.
Owner:QUANZHOU NORMAL UNIV +1
Preparation method of gastroenteritis virus monoclonal antibody biological immune preparation
InactiveCN105617376AIncrease profitOvercome the problems of many processes and heavy workloadAntiviralsAntibody ingredientsWater bathsSide effect
Owner:赵建英
Integrated livestock and poultry cultivation system of biomass combined heat and power generation
InactiveCN108658361AEfficient conversionEfficient use ofMethane captureGaseous fuelsFecesCogeneration
The invention relates to the technical field of cultivation and comprehensive utilization of resources, and specifically relates to an integrated livestock and poultry cultivation system of biomass combined heat and power generation. The cultivation system comprises a cultivation room; a heating device, a cooling device, a flushing device, an illumination device and a feces collection tank are arranged in the cultivation room; and the system also comprises a feces regulation tank, a sewage sedimentation tank, a first biogas fermentation tank, a second biogas fermentation tank, a methane extraction device, a methanol solution synthesis device, a biogas liquid and biogas residue treatment device, a reformer of hydrogen production by using methanol water, a fuel cell and a control device. According to the invention, heat energy and electric energy are generated through the conversion of livestock and poultry cultivation wastes, and the intelligent control of the whole system is realized,so that the biomass energy source can be efficiently converted and comprehensively utilized, the ecological integrated livestock and poultry cultivation system can be formed, and the system has a wideindustrial application prospect.
Owner:GUANGDONG HYDROGEN ENERGY SCI & TECH
Modified psyllium seed husk thickening agent used for drilling fluid and preparation method thereof
ActiveCN109796946AGood effectRemarkable sticking effectDrilling compositionTemperature resistancePsyllium Seed Husk
The invention relates to a modified psyllium seed husk thickening agent used for drilling fluid. The modified psyllium seed husk thickening agent comprises, by mass, 31-36% of psyllium seed husks, 34-35% of NaOH, 18-19% of isopropanol, 6-8% of a propylene oxide, 6-8% of a hydrophilic nanosilicon dioxide and the balance deionized water. The modified psyllium seed husk thickening agent used for drilling fluid is synthesized mainly through a solution synthesis method, ethoxy psyllium seed husks are formed and combined with the hydrophilic nanoslicon dioxide on the basis, and therefore an ethoxy psyllium seed husk-nanosilicon dioxide composition is formed; a systematic thickening effect and temperature resistance are improved; compared with a current synthesized polymer, the modified psylliumseed husk thickening agent is environmentally friendlier and more suitable for clay-phase-free drilling fluid, solid-phase-free drilling fluid and solid-phase-free completion fluid. The method is simple, easy to implement and easy to popularize, and the thickening agent for drilling fluid is efficient.
Owner:中石化石油工程技术服务有限公司 +2
Method for producing iron oxide black using desilicified mud cake
InactiveCN100564267CEfficient use ofImprove performanceFerroso-ferric oxidesIron oxide blackSynthesis methods
A method for producing iron oxide black with desiliconized mud cake as raw material, comprising the following steps: (1) preparing ferrous solution; (2) preparation of iron yellow crystal seeds; (3) pretreatment of desiliconized mud cake; (4) Oxidation pulping; (5) Synthesis; (6) Screening; (7) Press filtration; (8) Drying; (9) Inspection and packaging. The invention uses the desiliconized mud cake of pickling waste liquid in steel mills as raw material to produce iron oxide black, adopts a comprehensive oxidation synthesis method, and integrates the oxidation and synthesis processes in the traditional solution precipitation method. The process is simple and requires low equipment requirements. , Less side reactions, can effectively comprehensively utilize the characteristics of desiliconization mud cake and other characteristics of pickling waste liquid in steel plants. The iron oxide black prepared by the method has excellent performance and low production cost.
Owner:SHANGHAI BAOQI IRON OXIDE
Synthetic method of morphology-controllable organic-inorganic hybrid bismuth-based crystal
InactiveCN106065494AEasy to operateMild conditionsPolycrystalline material growthFrom normal temperature solutionsCrystalline materialsHybrid material
The invention relates to a synthetic method of morphology-controllable organic-inorganic hybrid bismuth-based crystal. Based on the principle that a crystalline material is formed by a solvothermal reaction, the synthetic method is completed by steps of bismuth-based material solution synthesis, solvothermal crystal preparation, product washing and vacuum drying. By controlling types of solvents, crystal in different morphologies is controllably synthesized. The solvothermal preparation method has advantages of simple operation, mild condition, simple process and the like. According to the invention, the influence of solvents on crystallinity and growth mechanism of an organic-inorganic hybrid material can be studied, thus providing theoretical basis for the design and research and development of a novel organic-inorganic hygrid material.
Owner:XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
Method for preparing nicotinamide mononucleotide eutectic
ActiveCN113402575AEasy to operateDid not affect drug activitySugar derivativesOrganic chemistry methodsCrystallographyNucleotide
The invention provides a method for preparing nicotinamide mononucleotide eutectic, and aims to solve the technical problems that the existing nicotinamide mononucleotide crystal has poor fluidity, so that the NMN drug or health product has large loading / weight difference and different quality. The method uses nicotinamide mononucleotide as an active ingredient and isonicotine as an eutectic forming substance, and adopts a solution synthesis method to mix the nicotinamide mononucleotide and the isonicotine for crystallization. The method has the advantages of simple operation and wide application range.
Owner:BONTAC BIO ENG SHENZHEN +1
Fast peptide-synthesizing process in solution
The present invention relates to a process for rapid solution synthesis of a peptide, the process comprising repetitive cycles of steps (a)-(d): (a) a coupling step, using an excess of an activated carboxylic component to acylate an amino component, (b) a quenching step in which a scavenger is used to remove residual activated carboxylic functions, wherein the scavenger may also be used for deprotection of the growing peptide, (c) one or more aqueous extractions and optionally, (d) a separate deprotection step, followed by one or more aqueous extractions, characterised in that the process comprises at least one step (b), referred to as step (b'), in which an amine or a thiol comprising a free anion or a latent anion is used as a scavenger of residual activated carboxylic functions. During the process of this invention the growing peptide need not be isolated until the final peptide sequence has been obtained. This highly efficient process is useful for the production of oligo- and polypeptides of high purity.
Owner:MERCK SHARP & DOHME BV
The production method of methyl carbamate
InactiveCN102276503ASimplify the synthetic systemHigh yieldCarbamic acid derivatives preparationOrganic compound preparationEnergy balancingMethyl carbamate
The invention provides a method for producing methyl carbamate, comprising the steps of synthesis of KB687, post-synthesis treatment of KB687, synthesis of KB687Na salt, synthesis of methyl carbamate solution, and post-synthesis treatment of methyl carbamate solution. The process of the invention simplifies the synthetic system of methyl carbamate, improves the yield of methyl carbamate, simplifies the operation procedure and shortens the reaction time. The material balance and energy exchange balance of the entire technological process, through the control of reaction conditions, achieve high selectivity of products, achieve reasonable comprehensive utilization, reduce raw material and energy consumption, and greatly save production costs.
Owner:ANHUI GUANGXIN AGROCHEM
Semiconductor luminescent material with adjustable luminescent colours and preparation method
InactiveCN102559172ALuminous color adjustableOvercome the self-purification effectLuminescent compositionsSelf purificationCore shell
A semiconductor luminescent material with adjustable luminescent colours is disclosed, and is a doped ZnO / pure ZnO core-shell structure, wherein doped ZnO is used as a core, pure ZnO is coated on the surface of the doped ZnO core to form a shell layer; doping ions diffusing to the shell layer form the core due to self-purification effect are contained in the pure ZnO shell layer; the size of the doped ZnO core is 15 nm; and the thickness of the pure ZnO shell layer is 3-5 nm. The semiconductor luminescent material with adjustable luminescent colours disclosed by the invention has the advantages of overcoming the self-purification effect of doped semiconductor and increasing doping efficiency by the coating of pure ZnO on surface, realizing the combination of pure ZnO and doped ZnO, enriching energy level distribution, and being capable of adjusting the luminescent colours of the material by changing excitation wavelength because of being a doped ZnO / pure ZnO core-shell structure; additionally, the luminescent material is prepared by means of solution synthesis, as well as is simple in process, easy in operation, decreased in equipment cost, and easy in large-scale production.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY
Intelligent pig farm capable of realizing combined heat and power supply by utilizing pig manure
InactiveCN108651285ARealize intelligent controlEfficient conversionMethane captureWaste water treatment from animal husbandryPig farmsEngineering
The invention relates to the technical field of cultivation and comprehensive utilization of resources, and particularly relates to an intelligent pig farm capable of realizing combined heat and powersupply by utilizing pig manure. The intelligent pig farm comprises a pig house; a plurality of pigsties are arranged in the pig house at intervals; each pigsty is internally provided with a manure and sewage collection tank; a sewage pipeline is laid under the ground of the pig house; the water outlet of each manure and sewage collection tank and the sewage pipeline communicate with the pig house; a heating device, a cooling device, a flushing device, a ventilation device and a lighting device are arranged in the pig house; and a manure regulation tank, a sewage sedimentation tank, a first biogas fermentation tank, a second biogas fermentation tank, a methane extraction device, a methanol solution synthesis device, a biogas and biogas residue treatment device, a reformer of hydrogen production by using methanol water, a fuel cell and a control device are respectively arranged outside the pig house. According to the invention, heat energy and electric energy are generated through the conversion of pig cultivation wastes, and the intelligent control of biomass, heat and electricity is realized, so that the biomass energy source is effectively converted and comprehensively utilized.
Owner:GUANGDONG HYDROGEN ENERGY SCI & TECH
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