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67results about How to "Increased electron cloud density" patented technology
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Nitrogen-doped hollow carbon ball loaded palladium-based catalyst and preparation method thereof, and alcohol fuel cell applying same
The invention relates to a preparation method of a nitrogen-doped hollow carbon ball loaded palladium-based catalyst, which comprises the following steps of: dispersing o-phenylenediamine in a solvent for being stirred at a low temperature, adding an initiator for reacting for 12-24h, then extracting and filtering, and drying in vacuum to obtain a poly(o-phenylenediamine) hollow ball; pyrolyzing an o-phenylenediamine polymer at a high temperature for 2-6h under the protection of an inert gas to obtain a nitrogen-doped hollow carbon ball; and dispersing the nitrogen-doped hollow carbon ball into water, adding a chloropalladic acid solution for ultrasonic treatment, adding a reducing agent for ultrasonic treatment, extracting and filtering after the reaction is completed, and drying in vacuum to obtain the nitrogen-doped hollow carbon ball loaded palladium-based catalyst. The nitrogen-doped hollow carbon ball loaded palladium-based catalyst prepared by adopting the preparation method has the nitrogen content of 10.4-22.4wt%, has the advantages of excellent oxidization reaction catalysis property to alcohol, stable performance, low preparation cost and simple preparation process, and is a novel high-performance catalyst for a low-temperature direct alcohol fuel cell anode.
Owner:NANJING COMM INST OF TECH
Propenyl phenoxy compounds with three-branch aromatic structure and preparation method thereof, and bismaleimide resin modified by propenyl phenoxy compounds
ActiveCN104628544ALower curing temperature effectIncreased reactivity collision chanceOrganic compound preparationCarbonyl compound preparationCooking & bakingReflux
The invention provides propenyl phenoxy compounds with a three-branch aromatic structure and a preparation method thereof, and a bismaleimide resin modified by the propenyl phenoxy compounds, relating to the field of thermosetting resins and adhesives for high-temperature-resistant composite materials. The invention aims to solve the problems of higher curing temperature and higher after-treatment temperature in the existing bismaleimide resin and the problem of poor long-time thermal aging resistance of the cured resin at high temperature. The structural general formula is disclosed in the specification. The preparation method comprises the following steps: adding trifunctional fluoro ketone, allyl phenol and a catalyst into a solvent, heating to react under reflux, filtering, cooling, precipitating, washing with water and baking. The bismaleimide resin modified by the propenyl phenoxy compounds is prepared from bismaleimide, propenyl phenoxy compounds with three-branch aromatic structure, and diallylphenyl compounds. The invention mainly discloses a propenyl phenoxy compounds with three-branch aromatic structure and a preparation method thereof, and a bismaleimide resin modified by the propenyl phenoxy compounds.
Owner:INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
Sulfide catalyst with palladium on nitrogen doped mesoporous carbon, and application of sulfide catalyst
InactiveCN106902845AHigh activityIncreased electron cloud densityPhysical/chemical process catalystsThiol preparationPalladium catalystSulfidation
The invention discloses a sulfide catalyst with palladium on nitrogen doped mesoporous carbon, and application of the sulfide catalyst. The sulfide catalyst is prepared through the following steps: uniformly mixing mesoporous carbon with a nitrogen-containing compound to obtain nitrogen doped mesoporous carbon; enabling the obtained nitrogen doped mesoporous carbon to be made into seriflux; slowly dropwise adding a soluble palladium-containing solution according to the palladium loading capacity; performing thorough uniform stirring; adding an alkaline solution to regulate the pH value of the solution; lowering the temperature to room temperature; performing filtering to obtain a filter cake I and filter residues; performing washing until the filter residues are neutral; enabling the filter cakes I to be made into seriflux; dropwise adding a liquid-phase reduction agent; performing stirring; performing filtering to obtain a filter cake II; washing the filter cake II until the filter cake II is neutral; performing drying. Under inert atmosphere, high-temperature sulfidation is performed on the catalyst with palladium on nitrogen doped mesoporous carbon by adopting a sulphur-containing substance to obtain the sulfide catalyst with palladium on nitrogen doped mesoporous carbon. The sulfide catalyst with palladium on nitrogen doped mesoporous carbon, which is disclosed by the invention, is used for synthesizing sulfo-arylamine through catalytic hydrogenation.
Owner:ZHEJIANG UNIV OF TECH
Heteroatom zeolite adsorbent and preparation method thereof
ActiveCN104549141AHigh adsorption activityImprove technical effectMolecular sieve catalystsOther chemical processesMolecular sieveSulphur compound
The invention relates to a heteroatom zeolite adsorbent and a preparation method thereof and mainly aims at solving the problems that purifying accuracy of an adsorbent is low, adsorption capacity is low and regeneration stability is poor in existing olefin adsorption purification. The preparation method comprises the following steps: introducing at least two metal cations by adopting an ion exchange or impregnation method for modifying zeolite, and moulding by virtue of a binding agent, so as to obtain a solid adsorbent. By adopting the technical scheme, the problems are relatively well solved, and the heteroatom zeolite adsorbent provided by the invention can be applied to adsorption purification industrial production and can be used for removing sulphur compounds in various olefin raw materials.
Owner:CHINA PETROLEUM & CHEM CORP +1
Fused ring non-fullerene acceptor material, and preparation method and application thereof
ActiveCN107652304AIncreased electron cloud densityImprove electron donating abilityOrganic chemistrySolid-state devicesOrganic solventOxygen bridge
The invention provides a fused ring non-fullerene acceptor material, and a preparation method and an application thereof. The fused ring non-fullerene acceptor material comprises an electron donatingunit and electron withdrawing end groups, the electron donating unit is a carbon-oxygen bridge trapezoidal fused ring structure, the electron withdrawing end groups are connected to two ends of the electron donating unit, and the fused ring non-fullerene acceptor material has a structure represented by formula I or formula II. The prepared fused ring non-fullerene acceptor material prepared through the preparation method has excellent light absorption and carrier transport properties, can be easily dissolved in common organic solvents, has strong visible near-infrared absorption property and high electron mobility (being more than or equal to 10<-5> cm<2>.V<-1>.s<-1>), realizes a high short-circuit current and a high energy conversion efficiency in organic solar cells, and has a broad application prospect and high application values.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
Thioureido modified imidazoline derivative corrosion inhibitor and preparation method and application of thioureido modified imidazoline derivative corrosion inhibitor
ActiveCN108467366AGood corrosion inhibitionLow toxicityOrganic chemistryDrilling compositionPhenylboronic acidImidazoline derivatives
The invention discloses a thioureido modified imidazoline derivative corrosion inhibitor, and the general molecular formula is shown in the description, wherein R is a branched chain with thioureido.The invention provides the thioureido modified imidazoline corrosion inhibitor as a lubricant additive, the phenylboronic acid in the additive is not esterified to borate, so that the problem of poorhydrolytic stability of the borate does not exist, the thioureido modified imidazoline derivative corrosion inhibitor is excellent in hydrolytic stability, and the defect of easiness in hydrolysis ofthe traditional borate additive is well overcome.
Owner:LUOYANG PACIFIC UNION PETROCHEM CO LTD
Nitrogen-containing compound, organic electroluminescent device using same, and electronic device
ActiveCN111925315AIncreased electron cloud densityHigh hole mobilitySilicon organic compoundsSolid-state devicesOrganic electroluminescenceOrganic compound
The present application provides a nitrogen-containing compound, an organic electroluminescent device, and an electronic device, the chemical structure of the organic compound comprises a carbazole ring, and the organic compound can be used as a light-emitting layer material in the electroluminescent device, improves the efficiency of the organic electroluminescent device, and prolongs the lifetime of the organic electroluminescent device.
Owner:SHAANXI LIGHTE OPTOELECTRONICS MATERIAL CO LTD
Naphthofuran-structure-containing biaryl monophosphine ligands, and preparation method and application thereof
ActiveCN105968137ANovel structureIncrease steric hindranceOrganic compound preparationGroup 5/15 element organic compoundsFuranSynthesis methods
The invention discloses naphthofuran-structure-containing biaryl monophosphine ligands, and a preparation method and application thereof. The biaryl monophosphine ligands are compounds disclosed the chemical structural formula (VIII) or antipodes or racemates thereof. According to the biaryl monophosphine ligands, the furan ring is introduced and forms a conjugated structure with the dinaphthalene, thereby increasing the steric hindrance of the phosphine ligands (including antipodes or racemates thereof) and the cloud density of the aromatic ring, and enhancing the stability of the complexes. The steric hindrance of the ligands is regulated, so that the ligands have novel structure. The preparation process comprises the steps of Sonogashira reaction, intramolecular cyclization, C-P coupling reaction and the like. The synthesis method is simple; and the obtained ligands have the advantages of high activity, favorable selectivity and the like when being used for Suzuki-Miyuara reaction.
Owner:SUN YAT SEN UNIV
Low-copper and antibiotic-free composite premix for pigs
ActiveCN104171545AEasy constructionImprove antibacterial propertiesAnimal feeding stuffPig farmsBiotechnology
The invention relates to a low-copper and antibiotic-free composite premix for pigs. Each kilogram of the composite premixed feed comprises 3.38-3.63 grams of composite vitamins, 19-42 grams of composite trace elements, 2.5-10.5 grams of composite enzyme for the pigs, 4.5-15.75 grams of choline chloride, 50-125 grams of lysine, 25-94.5 grams of a mildew adsorbent, 19-26.25 grams of rice husk powder, 3.95-4.05 grams of ethoxy quinoline, 1.2-1.8 grams of phytase, 30-45 grams of edible salt, 50-70 grams of limestone powder, 55-75 grams of calcium hydrogen phosphate, 3.8-4.2 grams of aspartame, 0.95-1.05 grams of fragrance substances, 1.5-2.5 grams of chitosan oligosaccharide, 1.5-2.5 grams of green tea powder and 1.5 grams of yeast selenium. The feed disclosed by the invention is not added with antibiotics, and the using amount of copper is greatly reduced, so that organic matters such as dung in a pig farm are easier to degrade or ferment; on the premise that the environment is protected, safety antibiotic-free pork is produced, and the quality and the flavor of the pork are improved.
Owner:北京挑战牧业科技有限公司
Room temperature cured fluorocarbon coating modified with nano particles and preparation method of room temperature cured fluorocarbon coating
ActiveCN105419601AImprove weather resistanceReduce the destructive effectAnti-corrosive paintsPolyurea/polyurethane coatingsSolventChemistry
The invention provides a room temperature cured fluorocarbon coating modified with nano particles and a preparation method of the room temperature cured fluorocarbon coating. The fluorocarbon coating specifically comprises a component A and a component B, wherein the component A comprises, by weight, 30%-45% of FEVE fluorocarbon resin, 20%-30% of nano-titanium dioxide filler, 2%-10% of discoid nano-europium oxide filler, 15%-20% of a solvent as well as a flatting agent, a defoaming agent, a wetting dispersant, a thixotropic agent and pigment which account for 4%-10% of the total mass of the component A; the component B comprises, in percentage by mass, 10%-50% of isocyanate type curing agents and a solvent. The weather resistance of the fluorocarbon coating is further improved through the higher shielding effect of nano-europium oxide for ultraviolet light and the composite effect of nano-titanium dioxide and nano-europium oxide.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
PEO film, preparation method thereof and solid-state battery
ActiveCN111370761AImprove stabilityImprove conductivitySolid electrolytesFinal product manufactureSolid-state batteryStructural unit
The invention relates to the field of batteries, and discloses a PEO film, a preparation method thereof and a solid-state battery. The molecular structure of the PEO film comprises a structural unit B, and the structural unit B comprises -CH = CH-O-. By utilizing the PEO film, the problem that the existing PEO film cannot give consideration to the conductivity, the contact performance with the positive electrode and the negative electrode and the self-stability can be solved, and the purpose of improving the conductivity and the self-stability of the PEO film is achieved.
Owner:CHINA AVIATION LITHIUM BATTERY RES INST CO LTD
Carbene iridium catalyst and preparation method and application thereof
ActiveCN111068785AReduced stabilityImprove stabilityIndium organic compoundsOrganic-compounds/hydrides/coordination-complexes catalystsPtru catalystEthylic acid
The invention provides a carbene iridium catalyst and a preparation method and application thereof, the carbene iridium catalyst has good application in preparation of methyl acetate through methanolcarbonylation, and the carbene iridium catalyst is mainly prepared from a CAAC ligand, 1, 5-cyclooctadiene iridium chloride and bis(trimethylsilane) amino potassium as raw materials. The preparation method comprises the following steps: drying raw materials for preparing the carbene iridium catalyst, replacing with nitrogen, sequentially adding acetone and liquid nitrogen, performing reacting at-78 DEG C, and extracting a reaction product with a solvent. According to the invention, the CAAC-IrCl (COD) catalyst of the CAAC ligand with relatively strong electron donating capability is applied tothe aspect of preparing methyl acetate through methanol carbonylation, so that the stability of the catalyst is improved, the methyl acetate is directly prepared under relatively mild and anhydrous conditions, the preparation process is simplified, and the operation cost is reduced.
Owner:NANJING YANCHANG REACTION TECH RES INST CO LTD +1
Organic dye based on asymmetric terthienyl pyrrole and preparation method and application thereof
ActiveCN107057399AIncreased electron cloud densityBroad absorption spectrumLight-sensitive devicesAzo dyesDye absorptionPhotoelectric conversion efficiency
The invention discloses an organic dye based on asymmetric terthienyl pyrrole and a preparation method and application thereof, and belongs to the technical field of solar batteries. The organic dye is characterized in that triphenylamine is used as an electron donor, cyano-acrylate is used as an electron receptor, and an asymmetric terthienyl pyrrole unit is used as a conjugate bridge; the terthienyl pyrrole unit has a rigid co-plane structure, the electron cloud density is high, and the red shift dye absorption spectrum is effectively widened; the N-substituting group of the terthienyl pyrrole unit is easily modified, different electrons and space effect groups are conveniently introduced, the energy gap of the molecules is conveniently adjusted, the aggregation of the dye is reduced, and the photoelectric property of a battery device is improved. According to the application of the organic dye based on the asymmetric terthienyl pyrrole as the conjugate bridge in the dye-sensitized solar batteries provided by the technical scheme of the invention, after proofing by testing results, the short-circuit light current density of the battery device is 15.2mA cm<-2>, the open-circuit voltage is 885mV, and the photoelectric conversion efficiency reaches 9.22%.
Owner:HUAIYIN INSTITUTE OF TECHNOLOGY
Preparation method of baloxavir key intermediate and intermediate thereof
ActiveCN111808069AHarm reductionHigh yieldOrganic chemistryBulk chemical productionBenzaldehydeThio-
The invention discloses a preparation method of a baloxavir key intermediate and the intermediate thereof. The method includes subjecting 3,4-difluoro-2-methyl benzaldehyde shown as a formula (I) as araw material to a bromination reaction to obtain 3,4-difluoro-2-bromomethyl benzaldehyde shown in a formula (II), carrying out a substitution reaction to obtain 3,4-difluoro-2-(((2-bromophenyl) thio)methyl)-benzaldehyde shown in a formula (III), and finally, carrying out a nucleophilic addition reaction to synthesize a target product, namely 7,8-difluorodibenzo[b, e]thiepin-11(6H)-ol shown in aformula (IV). The specific reaction process is shown in the specification. According to the method, 2-bromothiophenol is used for replacing foul and virulent thiophenol, the reaction steps are reducedto three steps, and the preparation method is high in yield, low in cost, environmentally friendly and easy to operate.
Owner:CHINA PHARM UNIV
Purple fluorescent material containing tertiary butyl fluorene
ActiveCN103952141AIncreased electron cloud densityHigh densityHydrocarbonsLuminescent compositionsTetrakis(triphenylphosphine)palladium(0)Energy transfer
The invention discloses a purple fluorescent material containing tertiary butyl fluorene and a preparation method thereof. The fluorescent material is characterized in that it is a fluorene organic compound with a molecular formula C37H42; the fluorescent material is synthesized by mixing and reacting 2,7-dibromo-9,9-diethyl fluorene, 4-tert butyl benzoboric acid, tetrakis(triphenylphosphine)palladium and potassium carbonate according to a certain proportion; and the synthesis has simple steps and reaches yield of 60%-92%. Tert butyl benzoboric acid and fluorene are subjected to a cross-coupling reaction to prepare the organic compound with fluorescence properties; and the conjugated big pi bond rich in electrons is conducive to electron transition and energy transfer, so that the compound has good photoelectric activity namely high luminous efficiency, and has potential application prospect.
Owner:湖州优研知识产权服务有限公司
High-efficiency dark blue fluorescence doped material and OLED organic electroluminescent device
ActiveCN112110942AImprove efficiencyImprove stabilitySolid-state devicesSemiconductor/solid-state device manufacturingFluorescenceULTRAMARINE BLUE
The invention relates to a high-efficiency dark blue fluorescence doped material and an OLED organic electroluminescent device. The invention discloses an organic electroluminescent compound and an organic electroluminescent device containing the same, and the structural formula of the organic electroluminescent compound is shown as a formula I. The compound can be used as an organic electroluminescent material, and a seven-membered ring is formed by combining Ra and Rb with Z1, Z2, Z3 and Z4, Z5 and Z6 in a bridging manner. The seven-membered ring increases the material molecule, rigidity andplanarity, can effectively improve the thermal stability of the material molecule and prolong the service life of the material, and the introduction of the seven-membered ring improves the conjugation effect of the material molecule and can increase the electron cloud density of a conjugation system, thereby increasing the luminous efficiency of the material molecule. Experiments show that compared with the prior art, the material provided by the invention has the advantages that the service life is obviously prolonged, and the efficiency is obviously improved.
Owner:NANJING TOPTO MATERIALS CO LTD
Modification method for inorganic carrier and chromium-based polyethylene catalyst
InactiveCN108203475AIncreased electron cloud densityImprove copolymerization performanceStrong acidsNitrogen
The invention relates to a modification method for an inorganic carrier. The inorganic carrier is modified by using organic molybdenum. The modification method comprises the following steps: immersingthe inorganic carrier into an organic solution containing the organic molybdenum at the temperature of 25-100 DEG C for 1-12h, and then, drying the inorganic carrier in a 100-300 DEG C nitrogen environment for 5-20h; and placing the dried inorganic carrier into a strong acid solution, immersing the inorganic carrier for 2-10h, and then, drying the inorganic carrier in the 100-300 DEG C nitrogen environment for 5-20h, wherein the content of Mo metal accounts for 0.01wt%-5wt% of the total weight of the inorganic carrier. The invention further relates to a chromium-based polyethylene catalyst. Negative charges on molybdenum atoms are capable of increasing the electron cloud density of chromium atoms to increase the reduction speed of Cr (VI), so that the induction time of a chromium-based catalyst is shortened, and meanwhile, the copolymerization property of Cr (VI) is improved.
Owner:PETROCHINA CO LTD
Oxygen vacancy-contained VOCs eliminating catalyst and preparation method thereof
ActiveCN109248691AIncreased electron cloud densityPromote catalytic combustion activityGas treatmentDispersed particle separationOxygen vacancyCerium
The invention provides an oxygen vacancy-contained VOCs eliminating catalyst. The oxygen vacancy-contained VOCs eliminating catalyst comprises a SiO2 carrier and oxygen vacancy-contained cobaltous oxide / cerium oxide loaded onto the SiO2 carrier. The invention further provides a preparation method of the oxygen vacancy-contained VOCs eliminating catalyst. According to the method, cobalt salt, cerium salt, urea and tetraethoxysilane are used as raw materials, and a sol-gel method and a temperature programming controllable hydrogen gas reduction method are adopted for preparing the loaded catalyst with silicon dioxide used as the carrier and the oxygen vacancy-contained cobaltous oxide / cerium oxide used as an active component. The oxygen vacancy-contained cobaltous oxide / cerium oxide has higher electron cloud density, is beneficial for adsorbing an oxygenated chemical formaldehyde and oxygen, and can promote the catalytic combustion activity of the catalyst; moreover, in the catalyst, theactive component is even in distribution, smaller in particle size, and beneficial for improving the activity of the catalyst of catalyzing formaldehyde combustion.
Owner:FUJIAN LONGKING
A large-volume electron-rich phosphine ligand catalyst and its preparation method and application
InactiveCN102268041AHigh activityExtend your lifeGroup 5/15 element organic compoundsOrganic-compounds/hydrides/coordination-complexes catalystsAlkaneLone electron pair
The invention discloses a bulky electron-rich phosphine ligand compound and a preparation method thereof. The structural formula of the phosphine ligand is shown in formula I; wherein, R represents an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group or an aryl group substituted by an alkane. The method for preparing the compound of formula I comprises the following steps: reacting the compound shown in formula II with the compound shown in formula III at -90°C to -60°C for 2-5h, and then reacting at room temperature for 5-15 hours, namely have to. The lone electron pair on the methoxyl oxygen in the large-volume thiophene-containing ligand synthesized by the present invention can increase the electron cloud density of the molecule, which is beneficial to stabilizing the Pd intermediate in the reaction process, preventing cyclization, and increasing steric hindrance. Improve catalyst life. In addition, the thiophene ring is a group with a stronger electron supply than aryl or alkyl, which is beneficial to increase the electron cloud density on the phosphine and improve the activity of the ligand. The ligand of the present invention is coordinated with the palladium catalyst and then applied to Suzuki coupling or polymerization reaction to synthesize photoelectric polymer materials with high molecular weight and high yield.
Owner:INST OF CHEM CHINESE ACAD OF SCI
A purple fluorescent material containing tert-butylfluorene
ActiveCN103952141BIncreased electron cloud densityHigh densityHydrocarbonsLuminescent compositionsEnergy transferSimple Organic Compounds
The invention discloses a purple fluorescent material containing tertiary butyl fluorene and a preparation method thereof. The fluorescent material is characterized in that it is a fluorene organic compound with a molecular formula C37H42; the fluorescent material is synthesized by mixing and reacting 2,7-dibromo-9,9-diethyl fluorene, 4-tert butyl benzoboric acid, tetrakis(triphenylphosphine)palladium and potassium carbonate according to a certain proportion; and the synthesis has simple steps and reaches yield of 60%-92%. Tert butyl benzoboric acid and fluorene are subjected to a cross-coupling reaction to prepare the organic compound with fluorescence properties; and the conjugated big pi bond rich in electrons is conducive to electron transition and energy transfer, so that the compound has good photoelectric activity namely high luminous efficiency, and has potential application prospect.
Owner:湖州优研知识产权服务有限公司
Acrylate pressure-sensitive adhesive, preparation method thereof and protective film
InactiveCN113736373AImprove antioxidant capacityLow costNon-macromolecular adhesive additivesOrganic non-macromolecular adhesivePolymer scienceFunctional monomer
The invention discloses an acrylate pressure-sensitive adhesive, a preparation method thereof and a protective film. The preparation method comprises the following steps: (1) mixing an acrylate hard monomer, an acrylate soft monomer, an acrylate functional monomer and a first type of photoinitiator, and irradiating under an ultraviolet light source to obtain an acrylate prepolymer; and (2) adding a diluting monomer and a second type of photoinitiator into the acrylate prepolymer to obtain an acrylate adhesive precursor; and adding thienopyrrole molecules into the acrylate adhesive precursor, and mixing to obtain the acrylate pressure-sensitive adhesive. The thienopyrrole molecules are creatively added into the acrylate prepolymer, the thienopyrrole molecules are used for doping the acrylate pressure-sensitive adhesive, free radicals generated by light, heat, radiation and the like can be effectively eliminated, chain reaction is prevented, the oxidation resistance of the UV pressure-sensitive adhesive is improved, and the cost is low. The whole preparation process is efficient, energy-saving and pollution-free.
Owner:SHENZHEN TONGTAIYING ELECTRONICS TECH CO LTD
Modification method for improving chlorine resistance of polyacrylonitrile forward osmosis membrane
ActiveCN112870994AImprove chlorine resistanceIncreased electron cloud densitySemi-permeable membranesGeneral water supply conservationPolymer scienceMeth-
The invention belongs to the technical field of water treatment, and discloses a modification method for improving chlorine resistance of a polyacrylonitrile forward osmosis membrane. The method comprises the steps: dissolving polyacrylonitrile in an organic solvent N-methyl pyrrolidone, adding a pore-foaming agent, putting the mixture into an ultrasonic cleaning machine for degassing treatment after the mixture is completely dissolved, and removing gas generated in the stirring process to form a membrane casting solution; pouring the membrane casting solution on a glass plate, scraping the membrane by using a membrane coating device, then immediately putting the membrane into a deionized water coagulating bath, and obtaining a polyacrylonitrile support membrane by using an immersion-precipitation phase inversion method; and preparing a polyamide functional layer by virtue of an interfacial polymerization method, then cleaning with n-hexane, and removing unreacted 1,3,5-trimesoyl chloride on the surface, so as to obtain the cyclohexylamine modified polyacrylonitrile forward osmosis membrane. On the premise of ensuring the flux of the polyacrylonitrile forward osmosis membrane, the chlorine resistance of the membrane is greatly improved.
Owner:NORTHEASTERN UNIV
Bicyclo-imidazoline laurate, synthesis method therefor and application of bicyclo-imidazoline laurate
InactiveCN108164465AIncreased electron cloud densityThe film is firm and denseOrganic chemistryElectrolytic organic material coatingReinforced concreteLong chain
The invention discloses bicyclo-imidazoline laurate. The bicyclo-imidazoline laurate has a symmetrical molecular structure, comprises two imidazoline heterocycles and two alkyl long chains of lauric acid, and thus, plenty and dense electronic clouds and good hydrophobicity can be provided. The invention further discloses a bicyclo-imidazoline laurate synthesis method, which is low in raw materialcost and high in reaction yield and can achieve industrial production. The invention further discloses an application of the bicyclo-imidazoline laurate. The electrotransport type cationic bicyclo-imidazoline laurate is obtained through activating bicyclo-imidazoline laurate and is applied to the rusting prevention of reinforced concrete.
Owner:NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
Non-aqueous electrolyte and lithium ion battery containing same
ActiveCN114497737AInhibition of catalytic oxidative decompositionReduce acidityFinal product manufactureSecondary cells servicing/maintenanceElectrolytic agentSurface oxidation
The invention discloses a non-aqueous electrolyte and a lithium ion battery containing the non-aqueous electrolyte. The non-aqueous electrolyte comprises a sulfonamide additive. Furthermore, the non-aqueous electrolyte also comprises an ester additive. In the electrolyte provided by the invention, the sulfonamide additive can be oxidized into a CEI film with good high-temperature stability on the surface of a positive electrode so as to inhibit the catalytic oxidation decomposition of a high-nickel positive electrode material on the electrolyte. Besides, the sulfonamide additive and the ester additive are matched with each other, so that the acidity of the electrolyte is inhibited from being increased, the ester additive can be reduced into an SEI film with good mechanical property on the surface of the negative electrode, and the normal-temperature circulation, high-temperature circulation and high-temperature storage performance of the battery are remarkably improved through the mutual synergistic effect of the sulfonamide additive and the ester additive.
Owner:ZHUHAI COSMX BATTERY CO LTD
Preparation method of carbon nano tube modified electrode used for detecting melamine
InactiveCN101915795BIncreased electron cloud densityImprove adhesionChemiluminescene/bioluminescenceMaterial electrochemical variablesAdhesiveElectrochemiluminescence
Owner:DALIAN UNIV OF TECH
Propylphenoxy compound with three-branch aromatic structure, preparation method thereof, and bismaleimide resin modified therewith
ActiveCN104628544BLower curing temperature effectIncreased reactivity collision chanceOrganic compound preparationCarbonyl compound preparationImidePolymer science
Owner:INST OF PETROCHEM HEILONGJIANG ACADEMY OF SCI
A kind of thiourea-modified imidazoline derivative corrosion inhibitor and its preparation method and application
ActiveCN108467366BGood corrosion inhibitionLow toxicityOrganic chemistryDrilling compositionPhenylboronic acidThiourea
The invention discloses a thioureido modified imidazoline derivative corrosion inhibitor, and the general molecular formula is shown in the description, wherein R is a branched chain with thioureido.The invention provides the thioureido modified imidazoline corrosion inhibitor as a lubricant additive, the phenylboronic acid in the additive is not esterified to borate, so that the problem of poorhydrolytic stability of the borate does not exist, the thioureido modified imidazoline derivative corrosion inhibitor is excellent in hydrolytic stability, and the defect of easiness in hydrolysis ofthe traditional borate additive is well overcome.
Owner:LUOYANG PACIFIC UNION PETROCHEM CO LTD
Composite catalyst, preparation process thereof, and process for catalyzing the trimerization of butadiene using the composite catalyst
ActiveUS20150231623A1High catalytic activityExcellent CDT selectivityOrganic-compounds/hydrides/coordination-complexes catalystsCatalystsActive componentSolvent
The present invention relates to a composite catalyst, preparation process thereof, and process for catalyzing the trimerization of butadiene using the composite catalyst. The composite catalyst comprises: (A) a titanium compound catalyst active component, (B) an organometallic compound co-catalyst component, (C) a sulfoxide compound catalyst-modifying component, (D) a monoester compound catalyst-modifying component, and (E) a solvent component. The composite catalyst has advantages of excellent selectivity, high catalytic activity, easy preparation and so on.
Owner:WANHUA CHEM GRP CO LTD +1
High-strength polyolefin composite material and its preparation method
The invention discloses a high-strength polyolefin composite material and a preparation method thereof. The weight percentages of its main components are: polyolefin: 93-99.7%, fullerene: 0.2-5%, and catalyst: 0.1-2%. The present invention utilizes the characteristics that fullerene is easy to carry out free radical addition reaction, adopts a catalyst with strong Lewis acidity, catalyzes macromolecular chain scission reaction, thereby forms macromolecular free radical, and connects with fullerene through free radical addition reaction, without It is necessary to carry out surface treatment on the fullerene in advance, which will not damage the structure of the fullerene itself, and can obtain organic fullerene with high structure retention.
Owner:NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
High-fluorine-containing C9 resin hydrogenation catalyst and preparation method and application thereof
ActiveCN112604692AHigh activityIncrease profitMetal/metal-oxides/metal-hydroxide catalystsPtru catalystFluorine containing
The invention relates to a high-fluorine-containing C9 resin hydrogenation catalyst, which is composed of an active component M1, an auxiliary agent component M2 and a carrier component M3. Based on 100% of the total weight of the catalyst, the content of the M1 component is 37%-54%, the content of the M2 component is 4%-6%, and the balance is the M3 component. The component M1 contains Ni, Mo, Cu and Al, the component M2 contains Sm and Na, and the component M3 is amorphous silicon-aluminum MgAl2O4 composite oxide. The invention also discloses a preparation method and application of the catalyst. The catalyst provided by the invention is used for hydrogenation removal of fluorine and sulfur in C9 resin, and can effectively delay fluorine and sulfur poisoning of a rear-stage hydrogenation catalyst.
Owner:WUHAN KELIN FINE CHEM
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