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37 results about "Acrylic aldehyde" patented technology
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Catalyst for selectively oxidizing methyl acrylic aldehyde to synthesize methyl propenoic acid and its use
ActiveCN1647854AHigh reactivityHigh selectivityPhysical/chemical process catalystsOrganic compound preparationHeteropoly acidGas phase
The present invention provides catalyst for selectively oxidizing methyl acrolein to synthesize methylpropenoic acid and its usage in catalyzing gas phase oxidation of methyl acrolein to synthesize methylpropenoic acid. The catalyst is one heteropoly acid salt containing Mo, P, K, Sb, Cu, As, etc., and has high catalytic activity and stability, long service life, methyl acrolein converting rate higher than 85 % and methylpropenoic acid selectivity over 87 % in the presence of molecular oxygen and diluting gas.
Owner:SHANGHAI HUAYI NEW MATERIAL
Additive agent selectively reducing aldehydes matter in cigarette flue gas, production method and application thereof
ActiveCN101194755AReduce the amount of adsorptionExtended reaction timeTobacco smoke filtersPigment treatment with non-polymer organic compoundsCrotonaldehydeChemical compound
The invention discloses an additive to selectively lower the aldehydes substances in cigarette smoke, which uses the silica gel with thick holes as the carrier and introduces the functional group through modification to coat a layer of chemical compounds provided with amidogen, carbamido or amide and capable of reacting with aldehydes substances on the carrier surface and the hole channel surface, wherein the modified carrier is applied in the cigarette filter up and can selectively lower the contents of the aldehyde substances in the cigarette smoke, such as formaldehyde, aldehyde, propanal, acrylic aldehyde, crotonaldehyde and the like.
Owner:CHINA TOBACCO HUNAN INDAL CORP
Catalyst for selectively oxidizing tertiary butanol or isobutene to synthesize methyl acrylic aldehyde and its use
ActiveCN1647853AHigh activityImprove thermal conductivityPhysical/chemical process catalystsOrganic compound preparationGas phaseCatalytic oxidation
The present invention provides a kind of catalyst for selectively oxidizing tertiary butanol or isobutene to synthesize methyl acrolein and its preparation process and application in gas phase catalytic oxidizing synthesis of methyl acrolein. The catalyst of the present invention is one kind of composite oxide containing Mo, Bi, Fe, Co, Sb, Pb, Yb, etc. and has high catalytic activity and stability, long service life, isobutene converting rate higher than 95 % and methyl acrolein selectivity over 86 % in the presence of molecular oxygen.
Owner:SHANGHAI HUAYI NEW MATERIAL
Method for preparing acrylic aldehyde by biological glycerol dehydration
ActiveCN101417928AReduce manufacturing costWide variety of sourcesMolecular sieve catalystsOrganic compound preparationHeteropoly acidGlycerol
The invention discloses a preparation method of acrolein, taking biological glycerol as the raw material and the modified zeolite supported heteropolyacid as catalyst, the method prepares acrolein directly by dehydration reaction. 18 to 30 catalyst are put in the middle section of a normal pressure continuous fixed bed reactor, with the volume space velocity of 1 to 10 h<-1>; under the protection of N2, the catalyst bed raises the temperature to 180 to 540 DEG C, and the biological glycerol solvent which is added with inhibitor is put into the fixed bed reactor from a micro pump; after gasified, the glycerine solution reacts by the catalyst bed. After reaction, the product is absorbed by acetone, then is separated and purified, thus obtaining acetone. The invention adopts the alkali metal, phosphoric oxides, alkali metal compound improved catalyst as carrier to carry heteropoly acid catalyst which is green and environmental catalyst and has the advantages of high activity, regeneration property, no pollution, simple reaction, operation process, low production cost, high mole selectivity of acrolein and high conversion rate of biological glycerol.
Owner:溧阳常大技术转移中心有限公司
Unsaturated aldehyde catalyst prepared by oxidation method and preparation method thereof
ActiveCN102371163AImprove responseImprove technical effectOxygen compounds preparation by hydrocarbon oxidationCarbonyl compound preparation by oxidationBULK ACTIVE INGREDIENTAlkene
The invention relates to an alpha-beta unsaturated aldehyde catalyst prepared by an olefin oxidation method and a preparation method thereof. The problems of low selectivity and low yield of a target product in the prior art are mainly solved. The problems are well solved according to the technical scheme that: an active ingredient shown as the general formula Mo12BiaFebNicXdYeZfOx is adopted, wherein X is selected from at least one of Mg, Co, Ca, Be, Cu, Zn, Pb and Mn; Y is selected from at least one of K, Rb, Na, Li, Tl and Cs; Z is at least one of La, Ce and Sm; and a pore forming compoundis added in the preparation process of the catalyst. The catalyst can be used in the field for industrially producing acrylic aldehyde and methyl acrylic aldehyde by oxidizing propylene and isobutene.
Owner:CHINA PETROLEUM & CHEM CORP +1
Maotai-flavour liquor treatment method
InactiveCN103131618AOperation mellowFull operationAlcoholic beverage preparationActivated carbonAcrolein
Owner:GUBEICHUN GROUP
Fractionating tower for separating acrylic aldehyde from 3-hydroxypropionaldehyde solution
ActiveCN101033180AEasy to cleanSpeed up contactCarbonyl compound separation/purificationEngineeringTower
This invention provides a rectifying tower for separating and hydrate acrolein to prepare non-reacted acrolein in a 3-lactic aldehyde reacted product, the top of the tower applies a new vertical seeve plate and the lower part applies a parallel flow jet filling tower plate and the rectifying section applies structured packing, which can increase the separation ability of towers to reduce pressure drop of the tower and operation temperature, reduce aggregation trend and reduction and aggregation trend of 3-hydroxide propaldehyde so as to reduce the loss of acrolein in the top tower.
Owner:SHANGHAI HUAYI NEW MATERIAL
Process for preparing acrylic aldehyde by using selective glycerol dehydration and preparation method of catalyst thereof
InactiveCN101879456AHigh activityIncrease reaction rateOrganic compound preparationCarbonyl compound preparationPhosphomolybdic acidFixed bed
The invention discloses a process for preparing acrylic aldehyde by using selective glycerol dehydration and a preparation method of a catalyst thereof. Heteropolyacid / a carrier is disclosed in the expression of the catalyst, wherein the heteropolyacid is one of silicotungstic acid, phosphotungstic acid and phosphomolybdic acid, and the carrier is one of activated aluminium oxide, kieselguhr, activated carbon, rutile type titanium dioxide and kaoline. The catalyst is prepared by using a constant-pore volume dipping method. When the catalyst is used in a fixed-bed miniature reaction device, the transformation rate of glycerol is 13.5%-80.6%, and the selectivity of the acrylic aldehyde is 49.0%-90.5%. When used for carrying out the process for preparing acrylic aldehyde by using glycerol dehydration, the catalyst has the advantages of high catalyst activity, high reaction speed, high selectivity for the acrylic aldehyde and the like, and the main byproduct is hydroxyl acetone.
Owner:JIANGSU UNIV
Catalyst used in preparation of (methyl) acrylic aldehyde and (methyl) acrylic acid
ActiveCN101850260ARaise the pHHigh mechanical strengthOrganic compound preparationOxygen compounds preparation by hydrocarbon oxidationMethyl groupComposite oxide
The invention relates to a catalyst used in preparation of (methyl) acrylic aldehyde and (methyl) acrylic acid. The catalyst is a composite oxide catalyst containing molybdenum, bismuth and iron, which is mainly used for selective oxidation of propylene or isobutene (tert-butyl alcohol) for producing the (methyl) acrylic aldehyde and (methyl) acrylic acid. Oxide nanocrystals are added during the preparation of the catalyst to not only play a part in adjusting the alkalinity or acidity of the catalyst so as to improve the selectivity of the (methyl) acrylic aldehyde and (methyl) acrylic acid and reduce the yield of carbon oxide serving as the byproduct but also enhance the mechanical strength of the catalyst; thus the invention is suitable for the preparation of an industrial catalyst and industrial application for a long period.
Owner:SHANGHAI HUAYI NEW MATERIAL
Catalyst for selectively oxidizing tertiary butanol or isobutene to synthesize methyl acrylic aldehyde and its use
ActiveCN1314487CHigh activityImprove thermal conductivityPhysical/chemical process catalystsOrganic compound preparationGas phaseCatalytic oxidation
Owner:SHANGHAI HUAYI NEW MATERIAL
Additive agent selectively reducing aldehydes matter in cigarette flue gas, production method and application thereof
ActiveCN101194755BReduce the amount of adsorptionExtended reaction timeTobacco smoke filtersPigment treatment with non-polymer organic compoundsCrotonaldehydeChemical compound
The invention discloses an additive to selectively lower the aldehydes substances in cigarette smoke, which uses the silica gel with thick holes as the carrier and introduces the functional group through modification to coat a layer of chemical compounds provided with amidogen, carbamido or amide and capable of reacting with aldehydes substances on the carrier surface and the hole channel surface, wherein the modified carrier is applied in the cigarette filter up and can selectively lower the contents of the aldehyde substances in the cigarette smoke, such as formaldehyde, aldehyde, propanal,acrylic aldehyde, crotonaldehyde and the like.
Owner:CHINA TOBACCO HUNAN INDAL CORP
Catalyst for selectively oxidizing methyl acrylic aldehyde to synthesize methyl propenoic acid and its use
ActiveCN100490973CHigh reactivityHigh selectivityPhysical/chemical process catalystsOrganic compound preparationHeteropoly acidGas phase
Owner:SHANGHAI HUAYI NEW MATERIAL
Method for preparing acrylic aldehyde by catalytic conversion of glycerin
ActiveCN107141206AIncrease productionEasy to separateOrganic compound preparationCarbonyl compound preparationOrganic solventAcrolein
The invention relates to a method for preparing acrylic aldehyde, and particularly discloses a method for preparing acrylic aldehyde by catalytic conversion of glycerin. The technical problems of high temperature requirement and low yield of a conventional acrylic aldehyde preparation method are solved. The method for preparing the acrylic aldehyde by catalytic conversion of the glycerin comprises the following steps: (1) preparing a 10 to 20 weight percent solution from the glycerin and an inert organic solvent, and then adding a catalyst to prepare a reaction system, the addition of the catalyst being 1 to 5 weight percent of the solution prepared from the glycerin and the inert organic solvent; (2) enabling the reaction system to perform reaction at 150 to 180 DEG C, and condensing and collecting generated acrylic aldehyde until no acrylic aldehyde is generated from the reaction system. According to the method, another solvent which is low in viscosity and has an inert chemical property is added into the reaction system, so that the viscosity of the system can be reduced, the diffusion rate of the acrylic aldehyde can be increased, meanwhile, the concentration of the glycerin can be diluted, the concentration of hydroxyl in the system can be reduced, the reaction probability of the acrylic aldehyde can be reduced, and the selectivity of the acrylic aldehyde can further be improved.
Owner:TAIYUAN INST OF TECH
Tetranitrodocosyl heterocyclic ring chromatographic stationary phase and preparation method and application thereof
ActiveCN105664889AImprove hydrophobicityImprove hydrophilic abilityOther chemical processesHexamethylenediaminePesticide residue
The invention discloses a tetranitrodocosyl heterocyclic ring chromatographic stationary phase. A preparation method includes: using hydrochloric acid to acidize porous spherical silica gel for chromatography, and water washing to neutral to realizing activation of the surface of silica gel; utilizing closed ring reaction to enable docosyl heterocyclic ring ligand generated by reaction of acrylic aldehyde and hexamethyldiamine to react with gamma-isocyanatepropyltriethoxy silane, and modifying a synthetic silane heterocyclic ring on the surface of a silica gel carrier to realize high efficiency and high selectivity of the stationary phase. The tetranitrodocosyl heterocyclic ring chromatographic stationary phase prepared by the method has excellent physical structure of silica gel matrix and has special chromatographic performance of nitrogen containing micro-ring; a structure of multi-nitrogen multi-alkyl heterocyclic ring long chain is bonded on the surface of silica gel, so that the stationary phase has high hydrophobicity and has certain hydrophilicity, thereby having high separating performance on pesticide residue (polycyclic aromatic hydrocarbons, phenols and amine); chromatographic analysis conditions after optimization are simpler and more convenient and easy to operate, so that application prospect is quite good.
Owner:ZHENGZHOU UNIV
Phosphoric acid modified montmorillonite loaded tungsten oxide catalyst, preparation method and application
InactiveCN105749939ASimple preparation processHigh catalytic activityPhysical/chemical process catalystsOrganic compound preparationTungstateGas phase
The invention discloses a phosphoric acid modified montmorillonite loaded tungsten oxide catalyst, a preparation method and application.The preparation method includes: using a phosphoric acid solution to modify montmorillonite, and adopting a soaking method to load tungsten oxide on phosphoric acid modified montmorillonite, wherein active species are H+ among montmorillonite layers, Al3+ outside a montmorillonite framework and WOx with different tungsten-oxygen atom coordination structures, and x is greater than or equal to 2.7 and less than or equal to 3; soaking phosphoric acid modified montmorillonite in a water solution of ammonium tungstate hydrate, oxalate dihydrate and low carbon, drying, and baking to obtain the phosphoric acid modified montmorillonite loaded tungsten oxide catalyst.The catalyst can be used for catalyzing glycerol gas-phase selective dehydration to produce acrylic aldehyde, glycerol conversion rate is 70-100%, acrylic aldehyde selectivity is 75-95%, and the catalyst is simple in preparation process, high in catalytic performance and long in service life.
Owner:ZHEJIANG COLLEGE OF ZHEJIANG UNIV OF TECHOLOGY
Acrylic acid catalyst and synthesis method of acrylic acid
ActiveCN104923245AEasy to shapeImprove technical effectOrganic compound preparationCarboxylic compound preparationActive componentSynthesis methods
Owner:CHINA PETROLEUM & CHEM CORP +1
Inorganic interior wall coating with formaldehyde-removing, antibacterial and antiviral functions and preparation method of inorganic interior wall coating
PendingCN113321956AGood scrub resistanceExcellent clean taste and environmental protectionAntifouling/underwater paintsAlkali metal silicate coatingsCelluloseSilicic acid
The invention relates to an inorganic interior wall coating with formaldehyde-removing, antibacterial and antiviral functions and a preparation method thereof. The coating is composed of the following raw materials in parts by weight: water, hydroxyethyl cellulose, modified bentonite, a defoaming agent, a wetting agent, a dispersing agent, an alkali neutralizer, titanium dioxide, nano modified zeolite powder, kaolin, modified glass powder, modified acrylic aldehyde removal emulsion, potassium silicate and a flatting agent. The product is zero in VOC, free of formaldehyde release, free of APEO and free of artificially added harmful substances, meets the current healthy development market situation, meanwhile, compared with current commercially available products, the product can eliminate formaldehyde, has the antibacterial and antiviral functions and can kill various bacteria, the sterilization efficiency reaches 99.9% or above, various viruses can be resisted by 99% or above, and family health is protected.
Owner:河北三棵树涂料有限公司
Process for recovering acrylic aldehyde or propionic aldehyde from low concentrate water solution flow
InactiveCN1263723CImprove overall recoveryReduce churnCarbonyl compound separation/purificationBoiling pointDistillation
A method of purifying acrolein or propionaldehyde with a single column distillation system is provided, where the distillation system has a side-draw take-off outlet for recovering purified acrolein or propionaldehyde located between the crude product feed point and the light-boiling impurities distillation site.
Owner:ARKEMA FRANCE SA
Method for preparing acrylic acid by carrying out liquid phase catalytic oxidation on acrylic aldehyde
InactiveCN107162896AAvoid energy consumptionAvoid strong exothermOrganic compound preparationCarboxylic compound preparationOrganic solventCatalytic oxidation
The invention discloses a method for preparing acrylic acid by carrying out liquid phase catalytic oxidation on acrylic aldehyde. The method disclosed by the invention comprises the following steps: taking an organic solvent as a reaction solvent system, adding acrylic aldehyde and nitrogen-doped carbon nanotubes, introducing oxygen, stirring and reacting for 0.1-24 hours at the pressure of 0.1-2MPa and at the temperature of 80-100 DEG C, and oxidizing the acrylic aldehyde into acrylic acid. The method disclosed by the invention has the advantages of high acrylic acid selectivity, mild reaction conditions, simple operation, low cost, simple and easily available catalyst, easiness in recycling and good stability; and the conversion rate of the acrylic aldehyde reaches more than 20%, and the selectivity of the acrylic acid reaches more than 60%.
Owner:SOUTH CHINA UNIV OF TECH
Treatment method of acrylic acid wastewater
PendingCN113429048AReduce processing costsSimple methodWater treatment parameter controlWater contaminantsDistillationWastewater
The invention discloses a treatment method of acrylic acid wastewater. A certain amount of alkali is added into the high-concentration aldehyde-containing acrylic acid wastewater, fractions are collected in a distillation mode and can enter a wastewater device for biochemical treatment, and distillation still liquid is incinerated. The method is simple and easy to implement, the COD removal rate is high, acrylic acid and aldehyde substances with biotoxicity can be removed, the treatment cost of the wastewater can be greatly reduced, and the method has important social benefits and economic benefits.
Owner:SINOPEC NANJING RES INST OF CHEM IND CO LTD +2
Apparatus and method for synthesizing 2-methoxy-3,4-dihydropyran
ActiveCN110585994BAffect healthIncrease temperatureOrganic chemistryPressure vessels for chemical processAcroleinEther
Owner:荆州市新景化工有限责任公司
Method of preparing benzaldehyde from p-methyl cyclohexene formaldehyde
ActiveCN105646169AHigh selectivityImprove responseOrganic compound preparationCarbonyl compound preparationCyclohexeneBenzaldehyde
The invention relates to a method of preparing benzaldehyde from p-methyl cyclohexene formaldehyde. According to the method, p-methyl cyclohexene formaldehyde carries out dehydro-aromatization and in-situ oxidation reactions in the presence of a supported transition metal catalyst at a temperature less than 200 DEG C in an atmosphere of oxygen gas so as to selectively generate benzaldehyde. The method has the advantages that the procedure is simple, the selectivity of target product is high, the substrate is obtained through one-step reactions between biomass resources namely isoprene and acrylic aldehyde, and a novel method of directly preparing aromatic chemicals from biomass is provided.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Jasmine lipstick and preparation method thereof
InactiveCN102697694BBright colorConvenient sourceCosmetic preparationsMake-upPolymer sciencePropanoic acid
Owner:汕头市万邦化妆品有限公司
Preparation method of glufosinate intermediate
InactiveCN109232645AHigh reaction yieldShort reaction timeGroup 5/15 element organic compoundsChemical recyclingDiethyl phosphateMolecular sieve
The invention discloses a preparation method of a glufosinate intermediate. Under the existence of heterobimetallic molecular sieve type catalyst CuZr / ZSM-5, acrylic aldehyde is dropwise added into amixed solution of methyl diethyl phosphite and absolute ethyl alcohol for reaction; after the reaction is completed, vacuum concentration is performed; the glufosinate intermediate of 3-(methyl ethyloxy) phosphonopropylal diethanol is obtained. The method has the advantages that the process is simple; the operation is easy; the reaction conditions are mild; the yield is high; the atom economy is high; the catalyst can be easily recovered and utilized; the industrial prospects are good.
Owner:NANJING REDSUN BIOCHEM CO LTD
A fractionating tower for separating acrylic aldehyde from 3-hydroxypropionaldehyde solution
ActiveCN100465147CEasy to cleanSpeed up contactCarbonyl compound separation/purificationEngineeringTower
Owner:SHANGHAI HUAYI NEW MATERIAL
Unsaturated aldehyde catalyst prepared by oxidation method and preparation method thereof
ActiveCN102371163BHigh selectivityHigh yieldOxygen compounds preparation by hydrocarbon oxidationCarbonyl compound preparation by oxidationBULK ACTIVE INGREDIENTAlkene
Owner:CHINA PETROLEUM & CHEM CORP +1
A phosphoric acid-modified montmorillonite-supported tungsten oxide catalyst, preparation method and application
InactiveCN105749939BSimple preparation processHigh catalytic activityPhysical/chemical process catalystsOrganic compound preparationTungstateGas phase
Owner:ZHEJIANG COLLEGE OF ZHEJIANG UNIV OF TECHOLOGY
Tetraazadocosyl heterocyclic chromatographic stationary phase and its preparation method and application
ActiveCN105664889BImprove hydrophobicityImprove hydrophilic abilityOther chemical processesSilanesPesticide residue
Owner:ZHENGZHOU UNIV
A kind of synthetic method of ethyl 5-(piperazin-1-yl)benzofuran-2-carboxylate
Owner:BEIJING BEILU PHARM CO LTD
Polymer bactericide with anticoccidial effect
The invention relates to a polymer for treating coccidiosis of poultry, which is a terpolymer having a molecular weight greater than 1,000 and formed by copolymerizing acrylic aldehyde, crylic acid, low-alkyl alkenyl acid or polyprotic acid.
Owner:QINGDAO VLAND BIOTECH INC
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