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587 results about "Sodium carbonate anhydrous" patented technology
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A: Anhydrous sodium carbonate is the waterless crystalline form of sodium carbonate, the sodium salt of carbonic acid. Its chemical formula is Na2CO3, and its molar mass is 105.988 grams per mole. Its density is 2.54 grams per cubic centimeter. It is soluble in water and slightly soluble in aqueous alcohol.
Drilling fluid and preparation method thereof
The invention discloses a drilling fluid and a preparation method thereof. The drilling fluid comprises Nml of water, wherein N is a positive number, 0.002N-0.005N gram of anhydrous sodium carbonate Na2CO3, 0.04N gram of bentonite for the drilling fluid, 0.003N-0.006N gram of coating agent, 0.015N-0.02N gram of tackifier, 0.01N-0.02N gram of filtrate reducer, 0.015N-0.03N gram of anti-collapse agent, 0.02N-0.03N gram of lubricant, 0.01N-0.015N gram of dispersing agent, 0.05N-0.08N gram of rigid bridging agent and 0.08N-0.15N gram of rigid filler. The drilling fluid of the invention is applicable to a loss formation and has obvious leakage stoppage effect, a leak-proof function at the same time and obvious inhibiting effect on a formation which is easy to disperse and collapse.
Owner:CHINA UNITED COALBED METHANE NAT ENGRES CENT +1
Method for preparing poly(arylene ether nitrile) resin powder
The invention discloses a method for preparing poly(arylene ether nitrile) resin powder, and belongs to the technical field of high polymer materials. 2,6-dichlorobenzonitrile and aromatic dihydric phenol are taken as raw materials, 1-methyl-2-Pyrrolidinone is taken as a solvent, anhydrous potassium carbonate or anhydrous sodium carbonate is taken as a catalyst, and methylbenzene or dimethylbenzene is taken as a dehydrating agent; and the method comprises the following steps of: performing reflux reaction at the temperature of between 130 and 160 DEG C for 2 to 4 hours in a reactor, slowly evaporating out water and the dehydrating agent, and raising the temperature to 180-200 DEG C until a macromolecular rod-climbing phenomenon happens; adding the solvent into the reactor, and diluting the reaction products to the mass concentration of 2 to 15 percent; and adding a precipitator into the reactor, continuously stirring, performing centrifugal solid-liquid separation, washing the solid in acidic boiling water, filtering and drying to obtain the poly(arylene ether nitrile) resin powder. The prepared poly(arylene ether nitrile) resin powder has the characteristics of superfine granularity (reaching 100-400 meshes), uniform granularity, high purity, stable performance, and excellent electrical property, and can be widely applied in the fields such as electronics, precision machines, aerospace, new energy and the like.
Owner:SICHUAN FEIYA NEW MATERIAL
Hydrophilic block polyether amino silicone oil with amino branched chain, and preparation method and application thereof
The invention discloses hydrophilic block polyether amino silicone oil with an amino branched chain and a preparation method thereof. The hydrophilic block polyether amino silicone oil with the amino branched chain has the following structure as shown in the specification, wherein R1 is represented by formulas shown in the specification. The preparation method comprises the following steps: carrying out mixing reaction of tetramethyl dihydro disiloxane, polysiloxane and concentrated sulfuric acid, neutralizing with anhydrous sodium carbonate, carrying out reduced pressure pumping to remove a low-boiling-point substance, and thus obtaining silicone oil with the end containing hydrogen; carrying out mixing reaction of the silicone oil with the end containing hydrogen, allyl epoxy polyether and a catalyst, and thus obtaining epoxy silicone oil; carrying out mixing reaction of the epoxy silicone oil, polyether amine and a solvent, and thus obtaining block polyether amino silicone oil; and carrying out mixing reaction of the block polyether amino silicone oil, a silane coupling agent hydrolysate and an alkali catalyst, neutralizing with glacial acetic acid, and thus obtaining the hydrophilic polyether amino silicone oil with the amino branched chain.
Owner:江阴市诺科科技有限公司
Method for measuring organic component in lithium ion cell electrolyte
InactiveCN1888889ADoes not affect quantitative testingAvoid pollutionComponent separationElectrical batteryLithium-ion battery
This is a test organic component method in lithium ion battery electrolyte. (1) Put DMC,EMC,DEC,EC,PC together into electrolyte and use absolute ethyl as thinner to get standard solution. Carry GC-MS test, get corresponding abundance value and protract standard curve according the content and abundance value of each solvent. (2) Add battery electrolyte into separating funnel and deionwater, surge the admixture for 1-5 minutes, add dichloromethane to surge for 8-12 minutes, eliminate lithium salt; extract the underlayer organic solution to filtrate in terrarium with absolute sodium carbonate. (3) Dilute the liquor got from step (2) into absolute ethyl, and keep its concentration accords with the standard curve range to step (1). (4) Carry GC-MS test in the condition as step (1), account the solvent compose and content of the original battery electrolyte in term of the standard curve to step (1). This method can avoid the cauterization to GC-MS test system by lithium salt component in electrolyte without affecting the fix quantify test to organic component.
Owner:TIANJIN LISHEN BATTERY
Preparation method of SiO2 aerogel-filled carbon aerogel
ActiveCN104129973AMaintain beneficial performanceImprove mechanical propertiesWater bathsShrinkage rate
The invention discloses a preparation method of SiO2 aerogel-filled carbon aerogel. The preparation method is characterized by comprising the following steps: (1) preparing carbon aerogel, namely taking resorcinol (R) and formaldehyde (F) as precursors (the molar ratio of R to F is 1 : 2), anhydrous sodium carbonate as a catalyst and carbon foam as a framework, and preparing the carbon aerogel based on the carbon foam; (2) performing acid treatment on the surface of the carbon aerogel, namely mixing H2O2, NH3H2O and H2O according to a volume ratio of 1 : 1 : 5 to form a mixed solution, and soaking the carbon aerogel in the mixed solution under the water-bath condition at 90 DEG C for 1 hour; (3) preparing a SiO2 precursor solution, soaking the carbon aerogel in the precursor solution, ageing and drying to obtain the SiO2 aerogel-filled carbon aerogel. The preparation method is reliable and good in safety; the prepared composite aerogel keeps good performances of the aerogel and improves the mechanical performance of the aerogel; the surface of the composite aerogel is hydrophobic, so that moisture in the air is not easily absorbed and the shrinkage rate is low.
Owner:SUZHOU HONGJIU AVIATION THERMAL MATERIALS TECH CO LTD
Flue gas low temperature denitration cobalt manganese oxide catalyst and preparation method thereof
InactiveCN104324729ARaw materials are easy to getThe process is simple and conventionalDispersed particle separationMetal/metal-oxides/metal-hydroxide catalystsSimple componentManganese oxide
The invention discloses a flue gas low temperature denitration cobalt manganese oxide catalyst and a preparation method thereof, and belongs to the technical field of flue gas denitration catalysts. The active components of the catalyst comprise a cobalt oxide, a manganese oxide and a cobalt manganese oxide solid solution; the method is as follows: a cobalt salt and a manganese salt are used as raw materials, anhydrous sodium carbonate or ammonia water is used as a precipitant, first, a cobalt salt and manganese salt mixed water solution is prepared, then a precipitant solution is prepared, and a cobalt manganese oxide catalyst product is prepared. The method has the advantages of conventional raw materials, simple preparation method and the like; the cobalt manganese oxide catalyst prepared by the method has simple components, low cost, high NOx removal efficiency and other advantages. The method can be widely used for preparing the flue gas low temperature denitration cobalt manganese oxide catalyst, and the catalyst prepared by the method can be widely applied in low temperature removal of NOx in flue gas, and is especially suitable for low temperature removal of the NOx in the flue gas of a coal-fired power plant.
Owner:NEIJIANG NORMAL UNIV
Cefotiam hydrochloride medicament composition sterile powder injection and preparation method thereof
ActiveCN101584665AImprove stabilityHigh purityAntibacterial agentsOrganic active ingredientsCefotiam HydrochlorideSodium carbonate anhydrous
The present invention discloses a cefotiam hydrochloride medicament composition sterile powder injection, including 500 to 600 weight shares of cefotiam hydrochloride and 110 to 150 weight shares of anhydrous sodium carbonate. The cefotiam hydrochloride medicament composition sterile powder injection has advantages of a good stability and a high purity. The invention also discloses a method for preparing the cefotiam hydrochloride medicament composition sterile powder injection, including steps of weighing the cefotiam hydrochloride and the anhydrous sodium carbonate according to the formula amount separately and mixing them in a sterile container uniformly. The method is simple, and the cefotiam hydrochloride prepared by the above method has a good stability.
Owner:SHANDONG LUOXIN PARMACEUTICAL GROUP STOCK CO LTD
Nano carbon material modified copper base catalyst and its preparing method
InactiveCN1586718AHigh activityHigh hydrogen selectivityHydrogenMetal/metal-oxides/metal-hydroxide catalystsHydrogen selectivityWater vapor
The present invention belongs to the field of chemical technology, and especially one kind of copper base catalyst with nanometer carbon material as co-catalyst for vapor reformation of methanol to prepare hydrogen and its preparation process. The catalyst is prepared through the process including the steps of: compounding 0.1 M solution of Cu / Zn / Al nitrate; compounding 0.1 M solution of sodium carbonate, dropping the 0.1 M solution of Cu / Zn / Al nitrate and 0.1 M solution of sodium carbonate in the same rate into reactor with nanometer carbon material for co-precipitation under strong stirring and 60 deg.c to obtain carbonate coprecipitate containing nanometer carbon material; washing, drying, roasting, etc. The prepared catalyst has unique porous structure of great specific surface area, high low temperature activity and high hydrogen selectivity, and may be used in preparing reformed product with hydrogen content up to 75 % and CO content lower than 0.1 %.
Owner:FUDAN UNIV
Foam oil displacement system with ultralow interfacial tension and use method of foam oil displacement system
ActiveCN105154055AReduce interfacial tensionImprove oil washing efficiencyFluid removalDrilling compositionCelluloseCocamidopropyl dimethylamine
The invention provides a foam oil displacement system with ultralow interfacial tension and a use method of the foam oil displacement system. The oil displacement system is formed by mixing raw materials in percentage by weight as follows: 0.1%-0.3% of a foaming agent, 0.05%-0.15% of an inorganic reagent, 0.01%-0.10% of a foam stabilizer and the balance of water, wherein the foaming agent is dodecyl dimethyl betaine, dodecyl hydroxysulfobetaine, dodecyl hydroxypropyl sulphobetaine, lauramide propyl hydroxysulfobetaine, lauramide propyl betaine, cocamidopropyl dimethylamine oxide, gemini oxidized tertamine, polyoxyethylene dodecanol ether sulfate or sodium dodecyl sulfate; the inorganic reagent is sodium hydroxide, anhydrous sodium carbonate or sodium metaborate; the foam stabilizer is partially HPAM (hydrolyzed polyacrylamide), acrylamide copolymer, PACHV (high-viscosity polyanionic cellulose) or HPMC (hydroxypropyl methyl cellulose).
Owner:CHINA PETROLEUM & CHEM CORP +1
Method for preparing cefozopran hydrochloride, cefozopran hydrochloride powder injection and preparation method thereof
ActiveCN101265267AAntibacterial agentsOrganic active ingredientsSodium Chloride InjectionSodium carbonate anhydrous
The invention relates to a preparation method of Cefozopran Hydrochloric acid, Cefozopran Hydrochloric acid powder for injection and preparation method thereof. The preparation method includes allowing 7-ACA as raw material and compound in the formula (II) to react in the presence of solvent such as dichloromethane, HMDS and TMSI, and post-treating to obtain compound in the formula (III); condensing with the compound in the formula (IV), post-treating to obtain the Cefozopran, salifying with hydrochloric acid to obtain product, centrifuging, water washing, and drying to obtain Cefozopran Hydrochloric acid crude product; and refining to obtain Cefozopran Hydrochloric acid refined product. The preparation method of the Cefozopran Hydrochloric acid provided by the invention has easily available raw material, high yield, and suitability for industrialized production. The Cefozopran Hydrochloric acid is mixed with anhydrous sodium carbonate and sodium chloride, and sub-packaged to obtain powder for injection having good stability. The obtained powder for injection can be used together with 5% glucose injection, and 0.9% sodium chloride injection.
Owner:SHANDONG LUOXIN PARMACEUTICAL GROUP STOCK CO LTD +1
Preparation method of ceramic bond for low-temperature high-strength cubic boron nitride (CBN) grinding tool
The invention discloses a preparation method of ceramic bond for a low-temperature high-strength cubic boron nitride (CBN) grinding tool, which comprises the following steps: evenly mixing 35-75% of a, 2-15% of b, 5-20% of c and 5-25% of d by weight percent, grounding and sieving, melting at 1200-1400 DEG C for 1-6h, carrying out water quench, drying, secondary grinding and secondary sieving to obtain basic ceramic bond, and evenly mixing the obtained basic ceramic bond with nano oxide the weight of which accounts for 0.2-15% of that of the basic ceramic bond to obtain the ceramic bond of theinvention, wherein the a is silica or silicon dioxide, the b is aluminum hydroxide or aluminum oxide, the c is anhydrous sodium carbonate or sodium oxide, and the d is boric acid or boron trioxide. Through adding nano oxide to the basic ceramic bond, the refractoriness of the basic ceramic bond is reduced by 10-50 DEG C, the fluidity is improved by 5-25%, and the breaking strength is improved by 5-45%.
Owner:HENAN UNIVERSITY OF TECHNOLOGY
Bisphenol A type bis-phthalonitrile resin with aryl ether nitrile segments, cured product and preparation method thereof
InactiveCN101914038ALow water absorptionImprove curing effectCarboxylic acid nitrile preparationOrganic compound preparationPhthalonitrileSolvent
The invention discloses a bisphenol A type bis-phthalonitrile resin with aryl ether nitrile segments, a cured product and a preparation method thereof and belongs to the field of polymer materials. Raw materials of bisphenol A and 2,6-dichlorobenzonitrile are subjected to nucleophilic substitution reaction, anhydrous potassium carbonate and anhydrous sodium carbonate are used as a catalyst, a hydroxyl-terminated bisphenol A type oligomer intermediate is formed in mixed liquor of a strong polar solvent and toluene, and then hydroxyl groups are substituted by 4-nitrophthalonitrile, thus obtaining the resin. A cure-crosslinking agent, the mass of which is equal to 5 percent of the resin, is added into the resin, and then after pre-curing at 220-240DEG C and heat treatment at 375DEG C at least, the cured product of the resin can be obtained. The bis-phthalonitrile resin provided by the invention has different chain lengths and the aryl ether nitrile segments as well as a low melting point and wider curing process temperature, and the cured product is of a net structure which comprises a phthalocyanine ring and a triazine ring and has excellent heat stability. The manufacturing methods of the resin and the cured product are simple and controllable and are suitable for industrial production.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Cefamandole nafate powder injection, production method of powder injection and raw machine thereof
ActiveCN101219117AFast dissolutionHigh clarityAntibacterial agentsOrganic active ingredientsSodium carbonate anhydrousPowder injection
The invention relates to an aseptic powder injection of cefamandole nafate and a preparation method thereof; the aseptic powder injection of cefamandole nafate comprises cefamandole nafate and anhydrous sodium carbonate; after the improvement of the preparation technology, the dosages of auxiliary material are small, and therefore the aseptic powder injection of cefamandole nafate obtained is good in stability and low in cost. The synthetic process of the drug material of cefamandole nafate adopted by the invention has simple operation process, low material cost and moderate reaction conditions; the cefamandole nafate produced has high purity and high productive rate.
Owner:SHANDONG LUOXIN PARMACEUTICAL GROUP STOCK CO LTD +1
Polybenzimidazole containing ether ketone/ether sulfone structure as well as sulfonated polymer and preparation method thereof
Owner:ZHEJIANG UNIV OF TECH
Method for measuring element content in iron alloy and pretreatment method of sample of iron alloy
ActiveCN104502169AEliminate the effects ofSimple manufacturing methodMaterial analysis using wave/particle radiationPreparing sample for investigationPretreatment methodInterference factor
The invention relates to a method for measuring the element content in an iron alloy and a pretreatment method of a sample of the iron alloy, and belongs to the field of element detection and analysis. The first technical problem to be solved is to provide a sample pretreatment method for measuring the element content in the iron alloy. The sample pretreatment method for measuring the element content in the iron alloy comprises the steps of a, melt reaction, namely performing the melt reaction on an alkali mixed solvent for the iron alloy sample to obtain molten globules or frits, b, grinding, namely crushing, grinding and sieving the molten globules or frits obtained in the step a, thereby obtaining powder, and c, tabletting, namely taking the alkali mixed solvent as a substrate and tabletting the powder obtained in the step b, thereby obtaining the pretreated sample of the iron alloy sample, wherein the alkali mixed solvent is composed of anhydrous sodium carbonate and anhydrous boric acid. The sample pretreatment method has the characteristics of simpleness and fastness, easy operations, few matrix interference factors, high quantitative determination accuracy and precision, and the like.
Owner:PANGANG GROUP RESEARCH INSTITUTE CO LTD
3D direct writing zirconium oxide ceramic ink
The invention relates to 3D direct writing zirconium oxide ceramic ink, which comprises zirconium oxide particles, a solvent, a binder, a dispersant and a salt, wherein the particle size of the zirconium oxide particles is 0.1-2 [mu]m, the solid content of the zirconium oxide particles in the ink is 40-58 vol%, the dispersant is one or a variety of materials selected from polyacrylic acid, polyvinyl acid, ammonium polyacrylate, polyvinyl acid salt, polyacrylate, polycarboxylate and polyacetyl imine, the dispersant accounts for 0.1-2% of the mass of the zirconium oxide particle dry powder, andthe salt is one or a variety of materials selected from ammonium chloride, zinc acetate, sodium chloride, magnesium chloride, potassium chloride, barium chloride, ammonium bicarbonate, anhydrous calcium chloride, potassium carbonate, sodium bicarbonate, sodium carbonate, anhydrous sodium carbonate, anhydrous sodium acetate, anhydrous calcium chloride, copper sulfate, basic copper carbonate, ammonium sulfate, ammonium bicarbonate, potassium aluminum sulfate and sodium citrate, and accounts for 0.001-0.1% of the mass of the ink. According to the present invention, the 3D direct writing zirconiumoxide ceramic ink can be printed at the room temperature, has high solid content while can flow out of the fine spraying nozzle and cannot cause the clogging, can be quickly cured into the fine wirewith a certain strength, and has good rheological property.
Owner:CENT SOUTH UNIV
Method for preparing praziquantel
InactiveCN101445507AShort synthetic stepsMild reaction conditionsOrganic chemistryHigh pressureSodium cyanide
The invention relates to a method for preparing praziquantel, which is characterized by comprising the steps: (1) isoquinolin, sodium cyanide or potassuim cyanide and triethylamine or pyridine are added into a reactor to react, and yellow solid which is a first step product is obtained; (2) the first step product is added into a high-pressure hydrogenation kettle and filled with hydrogen to react under the action of catalyst, so that a second step product is obtained; (3) after being stirred and dissolved, the second step product and ethyl acetate is added with anhydrous potassium carbonate or anhydrous sodium carbonate, and then is stirred at the room temperature and dripped with chloracetyl chloride to be stirred at the room temperature to react, so that the solid obtained in the reaction is crude product of the praziquantel, and fine product is obtained by recrystallization of absolute methanol. Compared with the prior art, the method has the advantages of shortening the reaction process, reducing the energy consumption, improving the overall yield, etc.
Owner:SHANGHAI WANXIANG INDAL
Ice melting agent for transformer substations and preparation method thereof
The invention discloses a preparation method of an ice melting agent for transformer substations. The method comprises the following steps: 1) in the stirring state, sequentially adding 26-34 wt% of propanediol and 46-52 wt% of diethylene glycol into a container, and sufficiently dissolving by continuing stirring; 2) in the stirring state, sequentially adding 1-3 wt% of triethanolamine and 2-4 wt% of anhydrous sodium carbonate, stirring and sufficiently dissolving; 3) in the stirring state, adding 13-18 wt% of deionized water into the completely dissolved solution until the pH value of the solution is 6.5-7.2; 4) after stirring for 30 minutes, standing for 4 hours; and 5) finally, filtering with a 1-micrometer filter, and subpackaging. By adopting the nano technique, the pH value of the ice melting agent for transformer substations is approximate to 7, and thus, the ice melting agent is not corrosive to power equipment and does not have any toxic effect on the environment.
Owner:STATE GRID CORP OF CHINA +2
Method for preparing hydrocalumite based heat stabilizer from calcium-aluminum hydroxide and application of hydrocalumite based heat stabilizer
ActiveCN105802070AIn line with green environmental protectionSimple production processEnvironmental resistanceAluminium hydroxide
The invention provides a method for preparing a hydrocalumite based heat stabilizer from calcium-aluminum hydroxide and an application of the hydrocalumite based heat stabilizer and belongs to the technical field of preparation of polyvinyl chloride. According to the method, the hydrocalumite based heat stabilizer is prepared from the calcium-aluminum hydroxide and anhydrous sodium carbonate serving as raw materials with deionized water as a solvent. The method specifically comprises steps as follows: calcium hydroxide and aluminum hydroxide are dissolved in deionized water and quickly stirred at the room temperature, anhydrous sodium carbonate is added to reactants, the mixture is quickly stirred continuously, a reaction system is transferred to an oil-bath pan for heating and refluxing, and the product hydrocalumite based heat stabilizer is obtained after post-treatment. The prepared novel hydrocalumite can effectively serve as a novel environment-friendly and non-poisonous PVC (polyvinyl chloride) heat stabilizer, raw materials are easy to obtain, the price is low, the hydrocalumite based heat stabilizer is synthesized directly in simple steps, and the target product meets requirements of green chemistry and is environment-friendly.
Owner:宁波慧硕新材料有限公司
High-strength large-size block carbon aerogel and preparation method and application thereof
PendingCN107473199AIncrease the degree of cross-linkingGood molding effectCarbon preparation/purificationCarbonizationSolvent
The invention discloses high-strength large-size block carbon aerogel and a preparation method and application thereof, and belongs to the technical field of carbon aerogel preparation. Resorcinol and formaldehyde are taken as raw materials, anhydrous sodium carbonate is taken as a catalyst, deionized water is a solvent, a sol-gel reaction is carried out, and normal-pressure drying and high-temperature carbonization are preformed to obtain high-strength large-size block carbon aerogel. The size of the block carbon aerogel is no less than 100 mm*100 mm*30 mm. With density variation of carbon aerogel, the size of carbon particles is adjustable between 30-800 nm. The carbon particles are mutually connected to form a three-dimensional network skeleton structure. The prepared carbon aerogel has the density of 0.3-0.6 g / cm<3>, the compression strength as high as 10-65 MPa, and the thermal conductivity of 0.06-0.09 W / (m*K), and can be directly applied to a heat insulation material.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Method for preparing sodium carbonate by dry method
ActiveCN1765733ANo lossGuaranteed active oxygen production ratePeroxides/peroxyhydrates/peroxyacids/superoxides/ozonidesInorganic ChemicalOxygen
The invention relates to dried prepare sodium percarbonate with active oxygen content at least 10 wt% and prefers to 13.5~15.2 wt%, and belongs to preparation technology field for peroxyacid salt in inorganic chemistry. Wherein, spray the hydrogen dioxide solution with varying speed to soda without water for reaction; drying and granulating the production to obtain the objective production. This invention is simple to control the active oxygen content and density and fit to different market require.
Owner:HUNAN JIEYU DAILY CHEM NEW TECH
Detergent suitable for cleaning hollow fiber ultrafiltration membrane and method for producing the same
ActiveCN101219341AStrong targetingReduce cleaning frequencySemi-permeable membranesFiberUltrafiltration
The invention provides a cleaning agent that is applicable to clean hollow fiber ultrafiltration membrane, which comprises the compounds (percentage by weight): anhydrous sodium carbonate accounts for 25-45 percent, trisodium phosphate accounts for 5-20 percent, anhydrous sodium sulfate accounts for 2-5 percent, ethylene diamine tetraacetic acid tetrasodium salt (EDTA-4Na) accounts for 5-15 percent, sodium percarbonate accounts for 0-33 percent, emulsifying agent SAS accounts for 8-15 percent, peregal-25 accounts for 0-5 percent and dodecyl sodium sulfate accounts for 4-10 percent. The compounds are added into an enamel reactor with a stirrer and a grinder in sequence to be stirred for 2-3 hours, thus obtaining the cleaning agent through grinding the mixture evenly. The invention has simple preparation and is particularly applicable to clean hollow fiber ultrafiltration membrane such as ultrafiltration oily wastewater, organic wastewater, protein concentration, etc.; the invention has strong decontamination direction, high effect and low cleaning cost.
Owner:OCHEMATE MATERIAL TECH CO LTD
Fusion metallurgy sample analysis fusing agent and its preparation and use method
InactiveCN101368886ALess materialEasy to preparePreparing sample for investigationDecompositionMagnetite
The invention discloses an analysis fluxing agent for melting metallurgical samples, and a preparation and using method thereof; the analysis fluxing agent is prepared with a main fluxing agent and an auxiliary fluxing agent, wherein, the contents of anhydrous sodium carbonate and boric acid reach 85.80% to 100%; the content of the auxiliary flux agent nitrate ammonium or potassium nitrate is 0 to 14.20%; the invention can be used to melt and decompose vanadium-titanium magnetite, vanadium-titanium-bearing slag, high-titanium slag, metallurgical auxiliary material, refractory material, vanadium slag, non-ferrous metal ores and other metallurgical samples; the flux agent of the invention has the advantages of less material adoption, simple preparation method, low cost, simple operation, short melting time, as well as good melting and decomposition effect; the melted samples are of easy acid leaching and decomposition, wide application and convenient using.
Owner:PANGANG GROUP RESEARCH INSTITUTE CO LTD +2
MOFs (Metal-Organic Frameworks) with ph stability as well as preparation method and application of MOFs
InactiveCN104151335ASimple preparation processMild reaction conditionsProductsOther chemical processesFiltrationTricarboxylic acid
The invention relates to MOFs (Metal-Organic Frameworks) with ph stability. The chemical formula of the MOFs is {[Zn2.5(nbta)(trz)2(H2O)].3H2O}n, wherein the nbta is 5-nitro-1,2,3-benzene tricarboxylic acid radical ions, and trz is 1H-1,2,4-triazole; the preparation method comprises the following steps: adding zinc nitrate, the 5-nitro-1,2,3-benzene tricarboxylic acid radical ions and the 1H-1,2,4-triazole into a water solution, using anhydrous sodium carbonate to regulate the PH value, reacting for 72 h at the temperature of 80 DEG C, conducting filtration and washing, and obtaining the target product; the MOFs can be used for selective adsorption separation of the CO2 / N2. The MOFs have the advantages that the preparation technology of the MOFs is simple, the operation is easy, the cost is low, the period is short, the productivity is high, the prepared MOFs have better ph stability and further have better selective adsorption separation performance on the CO2 / N2.
Owner:NANKAI UNIV
Method for producing poly(pentabromobenzyl acrylate)
ActiveCN102167762ANo physical effectLittle influence on physical propertiesPolymer scienceNitrogen gas
The invention discloses a method for producing poly(pentabromobenzyl acrylate). The method comprises the following steps of: adding ethylene glycol monomethyl ether, acrylic acid, hydroquinone and anhydrous sodium carbonate into a reaction kettle; reacting at the temperature of between 35 DEG C and 45 DEG C until no bubbles are produced; heating to reach the temperature of between 100 DEG C and 120 DEG C; adding pentabromobenzyl bromide to react to obtain pentabromobenzyl acrylate; adding the ethylene glycol monomethyl ether and the prepared pentabromobenzyl acrylate into the reaction kettle; introducing nitrogen gas and stirring; heating to reach the temperature of between 90 DEG C and 110 DEG C; adding a mixed solution of dicumyl peroxide and glycol ether; polymerizing for 1.5 to 2.5 hours and then heating to reach the temperature of between 110 DEG C and 126 DEG C; and continuously reacting for 2 to 5 hours to prepare the poly(pentabromobenzyl acrylate). A product prepared by the method has the advantages of superior performance, no separation, no migration, extremely low influence on properties of materials, capability of increasing productivity, high mechanical property, high anti-ultraviolet stability and high thermal stability.
Owner:SHANDONG RUNKE CHEM
Modified silica aerogel microsphere, and preparation method and application thereof
InactiveCN107043112AStrong acid and alkali resistanceHigh mechanical strengthWater contaminantsAlkali metal oxides/hydroxidesMicrosphereOil phase
The invention belongs to the technical field of adsorption materials, and discloses a modified silica airgel microsphere, a preparation method and an application thereof. The preparation method is as follows: use an acid solution to adjust the pH value of the alkaline silica sol to 2-3, then add a cyano-containing alkoxysilane compound, and add absolute ethanol under stirring conditions to obtain a mixed precursor; The mixed precursor is added to the oil phase under stirring conditions to obtain a water-in-oil emulsion, and then ammonia water is added, stirred and mixed evenly, and then allowed to stand for layering, and the lower layer of sediment is removed, washed and dried to obtain a cyano-modified silicon dioxide aerosol Glue microspheres; then added to the hydroxylamine hydrochloride solution dissolved with anhydrous sodium carbonate for reaction, the product was washed and dried to obtain the modified silica airgel microspheres. The invention prepares silica airgel microspheres and performs amidoxime modification on them, and has the advantages of high specific surface area and good adsorption performance.
Owner:SOUTH CHINA UNIV OF TECH
Sodium carbonate and sodium bicarbonate production from nahcolitic oil shale
InactiveUS6854809B1Solve the blockageEfficient executionVarying alkali metal carbonate water contentUnderground miningSodium bicarbonateNahcolite
A method for solution mining nahcolite, capable of extracting nahcolite from geological formations lean in nahcolite comprising injecting high pressure water (which may include recycled aqueous solution of bicarb and sodium carbonate) at a temperature of at least 250° F. into the formation, dissolving nahcolite in the hot water to form a production solution and recovering the production solution. The invention also includes the processing of the production solution to provide sodium carbonate and, optionally, sodium bicarbonate, comprising: decomposing the sodium bicarbonate portion of the hot aqueous production solution to form a hot aqueous solution of sodium carbonate; evaporating water from the hot aqueous solution comprising sodium carbonate to form a concentrated solution of sodium carbonate; producing sodium carbonate monohydrate from the concentrated solution of sodium carbonate by crystallization; and dewatering and calcining the sodium carbonate monohydrate to produce anhydrous sodium carbonate.
Owner:AMERICAN SODA
Low-temperature dyeing method for aramid/fire-retardant viscose blended fabric
InactiveCN101603276ANo pollution in the processLow costDyeing processVegetal fibresPre treatmentFire retardant
The invention discloses a low-temperature dyeing method for an aramid / fire-retardant viscose blended fabric, which comprises the steps of: preparing pre-treatment solution; placing an aramid / fire-retardant viscose blended fabric which needs to be dyed into the prepared pre-treatment solution for pre-treatment; compounding to obtain a dyeing assistant; taking a dye which accounts for certain weight percentage of the pre-treated aramid / fire-retardant viscose blended fabric, then taking a dispersant NNO, an electrolyte, anhydrous sodium carbonate, a wetting agent and the prepared dyeing assistant respectively, and preparing the raw materials into dye solution with the pH value of between 4.0 and 5.5; and placing the pre-treated aramid / fire-retardant viscose blended fabric into the prepared dye solution for dyeing, and then finishing the dyeing of the aramid / fire-retardant viscose blended fabric through the afterfinish. The dyeing method can perform integral one-bath dyeing on the aramid / fire-retardant viscose blended fabric, and ensure that the fabric has bright color, lower cost and unlimited color varieties and the fabric has better homochromatism.
Owner:XI'AN POLYTECHNIC UNIVERSITY
High-ultraviolet high-infrared reflective material and preparation method thereof
The invention discloses a high-ultraviolet high-infrared reflective material and a preparation method thereof. In the invention, a zinc source, phosphoric acid and anhydrous sodium carbonate are used as raw materials to form a zinc sodium phosphate base material, and oxides of metal and rare-earth elements and one or more salts of metal and rear-earth elements are used as adulterants and mixed into the zinc sodium phosphate base material to prepare a high-ultraviolet high-infrared reflective zinc sodium phosphate material; and by taking barium sulfate as a 100 percent datum reflectivity, the ultraviolet reflectivity of the high-ultraviolet high-infrared reflective material is 90-105 percent, the reflectivity of infrared ray with wavelengths of 800-2,000nm is 110-120 percent, and the reflectivity of infrared ray with wavelengths of 2,000-2,500nm is 130-150 percent. The method not only has high infrared reflection, but also can be used for reflecting ultraviolet light harmful to the human body, and can achieve the effects of saving energy and benefiting to the human health.
Owner:SOUTH CHINA UNIV OF TECH
Method for producing white carbon black with fcc waste catalyst as raw material
InactiveCN102275935ALow costReduce manufacturing costSilicaChemical recyclingWater bathsChemical reaction
The invention relates to a method for producing white carbon black by using FCC waste catalyst as raw material. The method is to mechanically activate the spent FCC catalyst and add anhydrous sodium carbonate as a roasting aid, and reduce the roasting temperature through mechanochemical reaction. The calcined product is leached and filtered, aged in a water bath to achieve the separation of silicon and aluminum, and finally washed and dried to obtain white carbon black that meets the relevant standards for use. This process combines mechanochemical reaction, low-temperature roasting and wet leaching process, and realizes the goal of producing white carbon black at low cost by using FCC waste catalyst. The outstanding feature of the present invention is that the process is simple, the production cost is low, the comprehensive utilization of waste can be realized, and it can be widely used in the waste catalyst treatment industry produced in the process of lightening heavy oil.
Owner:DALIAN JIAOTONG UNIVERSITY
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