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235 results about "Cyclohexenes" patented technology

Six-carbon alicyclic hydrocarbons which contain one or more double bonds in the ring. The cyclohexadienes are not aromatic, in contrast to BENZOQUINONES which are sometimes called 2,5-cyclohexadiene-1,4-diones.

Modified epoxy resin pouring sealant and preparation method thereof

The invention relates to the field of pouring sealants, and discloses a modified epoxy resin pouring sealant and a preparation method thereof, the pouring sealant comprises epoxy resin, a modified inorganic filler, a modified additive and an auxiliary agent; the modified inorganic filler is prepared by grafting a quaternized s-triazine derivative and an inorganic filler; the quaternized s-triazine derivative is prepared through the steps that 3, 5-diaminophenylboronic acid, cyanuric chloride, 3-chloropropyltrimethoxysilane and 1, 4-butanediamine are sequentially subjected to substitution to prepare a s-triazine derivative, then the s-triazine derivative reacts with N, N-dimethyl-1, 3-diaminopropane, and bromoethane is used for quaternization treatment. The modified additive is prepared from a modified bismaleimide monomer prepared from maleic anhydride and 5 (6)-amino-1-(4-aminophenyl)-1, 3, 3-trimethylindane and 1-methyl-4-isopropyl cyclohexene through a self-stabilization precipitation polymerization method, the prepared pouring sealant is high in tensile strength, good in impact resistance and good in mechanical property, and the prepared pouring sealant has the advantages of being good in mechanical property, good in mechanical property and good in mechanical property. Meanwhile, good heat resistance, flame retardance, dielectricity and antibacterial activity are achieved.
Owner:HUNAN SHENGSHI ADHESIVE TECH CO LTD

2-succinyl-5-enol acetonyl-6-hydroxy-3-cyclohexene-1-carboxylic acid synthase mutant and application thereof

The invention provides a 2-succinyl-5-enol acetonyl-6-hydroxy-3-cyclohexene-1-carboxylic acid (SEPHCHC) synthase mutant, which is characterized in that on the basis of a bacillus subtilis SEPHCHC synthase gene MenD, 12 SEPHCHC synthase mutants are obtained by virtue of a site-specific mutagenesis PCR (Polymerase Chain Reaction) technology, and the SEPHCHC synthase gene MenD is used as a base. Recombinant bacteria of bacillus subtilis or bacillus natto or bacillus licheniformis or bacillus amyloliquefaciens for expressing the mutant are respectively constructed, and the yield of heptaene menadione fermented by the recombinant bacteria is 74%-203% of the yield of heptaene menadione fermented by the recombinant bacteria of bacillus subtilis for expressing wild type SEPHCHC synthase MenD.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI

Method and device for utilizing tower top gas phase latent heat in cyclohexanol preparation

The invention belongs to the technical field of chemical engineering, and relates to a method and a device for utilizing latent heat of a tower top gas phase in cyclohexanol preparation. Comprising a first separation tower, a second separation tower and the like, a tower top gas phase outlet of the second separation tower is connected with a hot side inlet of a second tower condenser, and a cold side outlet of the second tower condenser is connected with the first separation tower; a tower top gas phase outlet of the cyclohexene recovery tower is connected with the first separation tower; a tower top gas phase outlet of the cyclohexanol refining tower is connected with a hot side inlet of a refining tower condenser, and a cold side outlet of the refining tower condenser is connected with the second separation tower through a pipeline; an outlet of the hydration reaction system is connected with the first separation tower, and a tower kettle liquid phase outlet of the first separation tower is connected with an inlet of the second separation tower through a pipeline; a side line outlet of the first separation tower is connected with the hydration reaction system. The tower top gas phase latent heat of the second separation tower, the cyclohexene recovery tower and the cyclohexanol refining tower is recycled, so that the energy consumption in the cyclohexanol production process is reduced.
Owner:HANGZHOU SUNENG TECH CO LTD

High-toughness corrosion-resistant power cable

The invention relates to the technical field of power cables, and provides a high-toughness corrosion-resistant power cable which comprises a conductor, and an insulating layer, an armor layer and a sheath layer are sequentially arranged on the outer side of the conductor. The sheath layer comprises the following raw materials in parts by weight: 35-45 parts of polyethylene, 35-45 parts of methyl vinyl silicone rubber, 35-48 parts of nitrile rubber, 6-8 parts of a plasticizer, 20-30 parts of filler, 1-2 parts of an antioxidant, 1-2 parts of a vulcanizing agent and 10-13 parts of a functional aid; the functional additive is prepared from the following raw materials: zinc oxide, cinnamic acid and cyclohexenecarboxylic acid. According to the technical scheme, the problem of poor toughness of the sheath layer of the corrosion-resistant power cable in the prior art is solved.
Owner:XINGTAI XILONG CABLE CO LTD

Modified ZSM-5 molecular sieve and application thereof in preparation of cyclohexanol by cyclohexene hydration

The invention relates to the technical field of cyclohexene hydration and catalysts, and discloses a modified ZSM-5 molecular sieve and application thereof in cyclohexanol preparation through cyclohexene hydration. The modified ZSM-5 molecular sieve comprises a ZSM-5 molecular sieve inner core, the inner core is subjected to sulfonation treatment after broaching, and then the surface of the inner core is coated with SiO2 to form a core-shell structure; and carrying out hydrophobic modification on the ZrO2-SiO2 coated SO3H-ZSM-5 molecular sieve, and depositing a zirconium oxide layer on the surface of the ZrO2-SiO2 coated SO3H-ZSM-5 molecular sieve to obtain the ZrO2-SiO2 coated The molecular sieve is used as a catalyst in a cyclohexene hydration reaction, the conversion rate reaches 25% or above, the selectivity reaches 99.5% or above, the activity is still stable after the molecular sieve is recycled 6 times, the catalyst is excellent in catalytic performance, a new thought is provided for a current two-phase catalytic reaction, and meanwhile the molecular sieve is expected to be applied to a cyclohexene hydration industrial device.
Owner:HUBEI SANNING CHEM +1

Caprolactam rectification heat energy coupling utilization system

The utility model provides a caprolactam rectification heat energy coupling utilization system, which comprises a cyclohexane refining tower, a cyclohexene separation tower and a debenzolization tower which are communicated in sequence, in the system, high-temperature gas-phase materials generated by the cyclohexane refining tower and the cyclohexene separation tower and kettle bottom liquid in the next tower are subjected to heat exchange treatment through a falling film evaporator, and the cyclohexene separation tower and the kettle bottom liquid in the next tower are separated; the feeding temperature of the next tower is increased, so that the heat utilization of high-temperature steam is improved, the use of steam is reduced, and the production cost is reduced; meanwhile, the use of fire coal is reduced, the emission of waste gas is reduced, and the environment is protected.
Owner:LIAOCHENG MEISI NEW MATERIAL TECH CO LTD

Degradable epoxy resin containing cyclic acetal structure as well as preparation method and application of degradable epoxy resin

The invention belongs to the technical field of epoxy resin, and provides degradable epoxy resin containing a cyclic acetal structure and a preparation method and application thereof.The epoxy resin is based on alicyclic epoxy resin, the cyclic acetal structure is introduced into the alicyclic epoxy resin structure, the cyclic acetal structure has degradability under the acidic condition, and therefore the cyclic acetal structure can be degraded under the acidic condition; the rigidity of the annular structure is favorable for improving the mechanical property of the epoxy resin, and the finally obtained epoxy resin has the characteristics of good mechanical property, ultraviolet radiation resistance and suitability for the field of photocuring. According to the preparation method provided by the invention, 3-cyclohexene-1-formaldehyde and tetrahydric alcohol are taken as raw materials, and the epoxy resin is obtained through nucleophilic addition reaction and epoxidation reaction.
Owner:DONGHUA UNIV

System and method for improving conversion rate of cyclohexanol prepared by cyclohexene hydration

The invention belongs to the technical field of cyclohexanol production, and particularly relates to a system and a method for improving the conversion rate of cyclohexanol prepared by cyclohexene hydration. The system for improving the conversion rate of cyclohexanol prepared by cyclohexene hydration comprises an alcohol tower I, a first hydration reactor and a second hydration reactor, a cyclohexene inlet and a side line extraction opening are respectively formed in the side wall of the alcohol tower I; the side line extraction port is communicated with an inlet of a first hydration reactor through a side line pipeline, a micro-interface reactor is arranged on the side line pipeline, a catalyst outlet is formed in the bottom of the first hydration reactor, and the catalyst outlet is communicated with a micro-interface mixing device through a catalyst pipeline; the first hydration reactor is communicated with the second hydration reactor through an overflow pipeline. According to the system and the method, on the premise of not changing the existing process operation, the reaction conversion rate of cyclohexanol prepared by a cyclohexene hydration method is improved, the process operation conditions are optimized, the energy consumption is reduced, and the purpose of improving the productivity is achieved.
Owner:YANKUANG LUNAN CHEMICALS CO LTD

Magnetic sandwich structure catalyst for preparing adipic acid

The invention discloses a sandwich structure catalyst for preparing adipic acid through cyclohexene oxidation based on a metal organic framework material, and belongs to the technical field of chemical synthesis, the structure of the catalyst is as follows: magnetic iron oxide nanospheres are loaded with heteropolyacid nanodots, and the outer layer is coated with a porous metal organic framework shell. The catalyst has excellent magnetic recovery performance, large specific surface area and open pore channels, and has the advantages of high catalytic activity, easy recovery, stable structure and the like. The excellent performance shows that the sandwich structure catalyst has important application value in reactions for preparing adipic acid through cyclohexene oxidation and the like.
Owner:ZHENGZHOU UNIV +1

3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarboxylate

PendingCN122628008AEpoxyPtru catalyst
This invention relates to the field of organic synthesis technology and discloses a method for preparing 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarboxylic acid ester, comprising the steps of: S1, providing raw material: 3-cyclohexenecarboxylic acid-3′-cyclohexene methyl ester; S2, epoxidation reaction: mixing the raw material with hydrogen peroxide, a composite catalyst, and a buffer to obtain a reaction solution containing the target product; S3, separation and purification: allowing the reaction solution to stand and separate into layers, separating the organic phase, washing with water, drying, and vacuum distilling to obtain 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarboxylic acid ester. This method for preparing 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexylcarboxylic acid ester uses hydrogen peroxide as the oxygen source, resulting in no heavy metal pollution, low wastewater volume, and conforming to the trend of green chemistry. The composite catalyst requires a small amount, has high activity and good selectivity, can be recycled ≥5 times, reducing costs, requiring less equipment, and is highly safe. The product is colorless and transparent, with a high epoxy value, purity ≥98.5%, low acid value, and good stability.
Owner:NANTONG SYNASIA NEW MATERIAL CO LTD

Disease-resistant growth-promoting aspergillus ochraceus AF-P9 and application thereof

The invention provides a disease-resistant and growth-promoting aspergillus ochraceus AF-P9 and application thereof, and belongs to the technical field of microorganisms. The aspergillus ochraceus AF-P9 provided by the invention has salt resistance and alkali resistance, has the capabilities of producing siderophores and secreting chitinase, and has an efficient inhibition effect on a plurality of pathogenic bacteria such as fusarium oxysporum, fusarium oxysporum, fusarium tripteroides, pythium miscanthus, avena minuta, phomopsis divaricata, sclerotinia sclerotiorum, phytophthora and the like; the composition can be applied to prevention and treatment of rice damping-off. Furthermore, the metabolite of the aspergillus ochraceus AF-P9 is analyzed to obtain that the aspergillus ochraceus AF-P9 can generate a tricyclic cyclohexanone compound, a cyclohexene compound with a hydroxyl group, a phenanthrone-like compound with a hydroxyl group, a benzene ring compound with two long-chain esters, a cyclohexene compound with four parallel ring structures and the like. The aspergillus ochraceus AF-P9 provided by the invention provides a strain resource for biological prevention and control of diseases.
Owner:HEILONGJIANG QUANZHU AGRICULTURAL TECHNOLOGY CO LTD

Pyruvate kinase R (PKR) activating composition

The present disclosure provides a pharmaceutical composition comprising (S)-1-(5-[2H,3H-[1,4]dioxyno[2,3-b]pyridin-7-sulfonyl]-1H,2H,3H,4H,5H,6H-pyrrolo[3,4-c]pyrrole-2-yl)-3-hydroxy-2-phenylpropan-1-one (“Compound 1”) in a crystalline solid form, a spray-drying dispersion, and a solid oral administration form, and a method for preparing the same.
Owner:NOVO NORDISK HEALTH CARE AG

Preparation method of catalyst for preparing cyclohexene through benzene hydrogenation

The invention discloses a preparation method of a catalyst for preparing cyclohexene through benzene hydrogenation, and belongs to the technical field of catalyst preparation. Comprising the following steps: dropwise adding a metal salt solution containing ruthenium salt and zinc salt and a precipitant solution into an alcohol solution at the same time, and carrying out a co-precipitation reaction; carrying out in-situ reduction on a solid product obtained by the coprecipitation reaction; a product obtained after in-situ reduction is put into alkali liquor to be stirred; according to the method, the alcoholic solution is used as a coprecipitation reaction medium, does not participate in the reaction, but can adjust the microenvironment of the reaction medium, so that the microenvironment fluctuation of the solution in the precipitation process is relatively small; the catalyst with relatively uniform precipitation can be obtained, so that the activity of the prepared Ru-Zn catalyst can be improved; the problems of single precipitation process, insufficient catalyst structure uniformity, poor preparation reproducibility and the like of a traditional water phase coprecipitation method are solved; the catalyst is applied to a reaction for generating cyclohexene through selective hydrogenation of benzene.
Owner:LUAN CHEMICAL GROUP CO LTD +2

A catalyst, a preparation method thereof, and an application thereof in the liquid-phase alkylation of benzene and cyclohexene to synthesize cyclohexylbenzene

The present invention provides a catalyst, a preparation method thereof, and an application thereof in the liquid-phase alkylation of benzene and cyclohexene to synthesize cyclohexylbenzene. The catalyst uses MWW molecular sieve synthesized from inexpensive and low-toxic cyclohexylamine as the active component and silica as the binder. The prepared catalyst exhibits excellent catalytic performance in the liquid-phase alkylation reaction of benzene and cyclohexene.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

A molecular sieve, a preparation method thereof, and an application thereof in the liquid-phase alkylation of benzene and cyclohexene

The present application discloses a molecular sieve, a preparation method thereof, and an application thereof in the liquid-phase alkylation reaction of benzene and cyclohexene. It at least includes the following steps: mixing raw materials containing a silicon source and an aluminum source with cyclohexylamine and water, crystallizing and calcining to obtain the molecular sieve. The MWW molecular sieve is synthesized by using cheap and low-toxic cyclohexylamine instead of highly toxic hexamethylenimine, making the synthesis process more green. The MWW molecular sieve synthesized by cyclohexylamine exhibits more excellent catalytic performance. The template agent can be removed during low-temperature calcination.
Owner:DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES

Methods for producing adipic acid with low N2O tail gas emissions

PendingCN122301666AMolecular sievePtru catalyst
This invention relates to the field of adipic acid synthesis technology and discloses a method for producing adipic acid with low N2O tail gas emissions. The method includes: Step S1. A first contact reaction is carried out between cyclohexene, hydrogen peroxide, and a first catalyst, wherein the first catalyst is a solid catalyst comprising a tungsten-doped titanium-containing molecular sieve; the liquid phase material from the contact reaction is subjected to oil-water separation to obtain an aqueous phase containing cyclohexane oxide and an oil phase containing cyclohexene; Step S2. A second contact reaction is carried out between the aqueous phase containing cyclohexane oxide and nitric acid and a second catalyst, wherein the second catalyst is a Cu-containing... 2+ V 5+ and Mo 6+ The method utilizes ionic liquid catalysts. It results in low N2O emissions, high exhaust gas absorption rate, low production cost, and is environmentally friendly, showing promising prospects for industrial application.
Owner:PETROCHINA CO LTD

Benzo[5,6][1,4]dioxino[2,3-b]pyridine compounds useful as IRAK4 inhibitors

Disclosed are compounds of Formula (I) or a salt or prodrug thereof, wherein R1, R2, and R3 are defined herein. Also disclosed are methods of using such compounds as modulators of IRAK4, and pharmaceutical compositions comprising such compounds. These compounds are useful in treating, preventing, or slowing inflammatory and autoimmune diseases, or in the treatment of cancer.
Owner:BRISTOL MYERS SQUIBB CO

Process for the production of cyclohexene

The present application relates to the production field of organic chemical raw material cyclohexene, and discloses a production method of cyclohexene.The method comprises the following steps: carrying out cracking reaction on cyclohexylbenzene and / or dicyclohexylbenzene raw material and a solid acid catalyst to obtain cyclohexene and benzene; and the solid acid catalyst is selected from at least one of amorphous silicon aluminum, molecular sieve and solid supported inorganic acid.The method has the advantages of high raw material conversion rate, high cyclohexene yield and no by-product cyclohexane, etc.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

2-succinyl-5-enolacetonyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase mutant and application thereof

The invention relates to a 2-succinyl-5-enol acetonyl-6-hydroxy-3-cyclohexene-1-carboxylic acid synthase mutant and application thereof, and belongs to the technical field of enzyme engineering. According to the invention, a key residue of 2-succinyl-5-enolacetonyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase is obtained by combining protein sequence comparison and alanine scanning strategies, the key residue is subjected to random mutation, and the menadione pathway resistant intermediate metabolite 1, 2, 3, 4-tetracarboxylic acid synthase is obtained through multiple rounds of screening. The mutant MenDW322IR323F which is subjected to feedback inhibition by using 2, 4-dihydroxy-2-naphthoic acid is synthesized, the heptaene menadione production capacity of the recombinant bacillus subtilis constructed according to the method is improved, the yield is 1.22 times that of a control strain, and the final yield reaches 186.5 mg / L. The invention not only provides a new direction for transformation of a menadione approach of bacillus subtilis, but also is beneficial to industrial expanded production of heptaene menadione.
Owner:JIANGNAN UNIV

A bicyclic [2.1.1]hexene compound and its preparation and application

This invention discloses a bicyclic [2.1.1]hexene compound and its preparation and application. The invention uses bicyclic [1.1.0]butanone and phosphate ester as starting materials, and potassium tert-butoxide tetrahydrofuran solution as base. The reaction is carried out under reflux at 80°C to obtain the bicyclic [2.1.1]hexene compound. The prepared compound has certain transpeptidase inhibitory activity and can effectively inhibit the infection and spread of Staphylococcus aureus.
Owner:ZHEJIANG UNIV OF TECH

Electrolyte solute, preparation method and application thereof

This application discloses an electrolyte solute, its preparation method, and its application. The electrolyte solute comprises an olefinic cyclohexene carboxylic acid compound obtained by the reaction of conjugated diene carboxylic acids. The conjugated diene carboxylic acid includes at least one compound having the structure shown in Formula III: wherein X and Y are each independently selected from H, -RO-COOH, substituted or unsubstituted C1-10 saturated hydrocarbon groups, etc., and at least one of X and Y is -RO-COOH; RO represents a directly bonded or C1-10 saturated hydrocarbon group. The electrolyte solute of this application, comprising an olefinic cyclohexene carboxylic acid compound with unsaturated hydrocarbon functional groups, can both improve the flash voltage of the electrolyte and maintain low viscosity and high conductivity.
Owner:SHENZHEN CAPCHEM TECH CO LTD

Preparation method of a catalyst supported by double-crystalline-phase titanium dioxide nanosheet tubes

The present invention discloses a preparation method of a catalyst supported on a double-crystalline-phase titanium dioxide nanosheet tube. A titanium dioxide nanosheet tube support with anatase phase and rutile phase is prepared by a hydrothermal method, and then the final catalyst is obtained by reduction and loading of ruthenium. The titanium dioxide nanosheet tube support can not only effectively improve the hydrophilicity of the catalyst, making cyclohexene easy to desorb from the catalyst surface and difficult to re-adsorb, but also greatly improve the selectivity of the catalyst. The use of a large number of mutually cross-linked nanosheets grown on the nanosheet tube avoids the agglomeration inactivation of Ru microcrystals caused by the collision of Ru particles loaded on the support, improving the stability of the catalyst. At the same time, the large specific surface area of the nanosheets is beneficial to improving the dispersion of Ru, thereby reducing the dosage of the active metal and greatly reducing the production cost of the catalyst. The present invention is applicable to the preparation of a catalyst supported on a double-crystalline-phase titanium dioxide nanosheet tube.
Owner:YANSHAN UNIV +1

Catalyst for synthesizing cyclohexenone by oxidizing cyclohexene as well as preparation method and application of catalyst

The invention relates to the technical field of cyclohexenone synthesis, in particular to a catalyst for cyclohexenone synthesis through cyclohexene oxidation as well as a preparation method and application of the catalyst. For the reaction of synthesizing cyclohexenone through catalytic oxidation of cyclohexene, most catalytic systems are difficult to realize high conversion rates (gt; 70%) and high selectivity (gt; 60%). Aiming at the technical problems, the invention provides the catalyst for synthesizing cyclohexenone by oxidizing cyclohexene, the catalyst is formed by loading a metal active component on the surface of a SiC carrier or loading the metal active component on the surface of an amino-modified SiC carrier, and the catalyst takes SiC or amino-modified SiC as a carrier to load an Au metal active component. The Au nano-particles loaded on the surface can be well dispersed and stabilized, excellent activity and selectivity are shown in the cyclohexene oxidation process with oxygen as an oxidizing agent, after the cyclohexene oxidation reaction is finished, the highest conversion rate of cyclohexene can reach 80% or above, and meanwhile the highest selectivity of cyclohexenone can reach 70% or above.
Owner:CHANGZHOU UNIV

A method for synthesizing nanoscale sheet-like ts-1 titanium silicalite molecular sieve

The application discloses a synthesis method of nanoscale sheet TS-1 titanium silicate molecular sieve. Tetraethyl orthosilicate is used as a silicon source, tetrabutyl titanate is used as a titanium source, tetrapropyl ammonium hydroxide is used as a template agent, and an ammonium salt is added as an assistant for limiting particle growth along a b axis. After hydrothermal reaction, the obtained product is washed, baked and calcined, so that the nanoscale sheet TS-1 titanium silicate molecular sieve with a b axis size of 20-50 nm and a axis and c axis size of 80-150 nm is synthesized. The method has the advantages of simple operation, repeatability, small template agent consumption, low cost, easy industrial production and application, etc. The sheet nanoscale TS-1 titanium silicate molecular sieve synthesized by the method has small particle size, thin b axis thickness, large specific surface area, more exposed Ti active sites, shortened transmission path of reactants and products, reduced diffusion resistance, and higher catalytic activity for oxidation reactions of toluene and cyclohexene.
Owner:XIAN CATALYST NEW MATERIALS CO LTD

A kind of synthetic method of dihydrocapsaicin

The invention discloses a method for synthesizing dihydrocapsaicin, and the method comprises the following steps: synthesizing a first intermediate 1-isobutylcyclohexene, a second intermediate 8-methyl-6-oxonanoic acid, a third intermediate 8-methylnonanoic acid and a target product dihydrocapsaicin. The method uses cyclohexanone, isobutylmagnesium bromide and vanillin ammonium hydrochloride as raw materials, and obtains the product dihydrocapsaicin by stepwise reaction. Each reaction step adopts a conventional chemical reaction, and the reaction conditions are mild. The feasibility of the synthesis process is high, the safety and environmental protection are strong, and the product has a high yield and good purity, and is suitable for industrial production.
Owner:SUZHOU HUADAO BIOLOGICAL PHARMA

Method and device for preparing cyclohexene by partial hydrogenation of benzene

The invention discloses a method and a device for preparing cyclohexene by partial hydrogenation of benzene. The device is formed by connecting 2-3 reaction units in series, the reaction unit comprises a reaction kettle and a split-phase kettle; a material outlet of the reaction kettle is connected with a material inlet of a guide cylinder at the top of the split-phase kettle through a guide pipe, the spherical kettle top of the reaction kettle is communicated with the top of the split-phase kettle through a gas phase balance pipe, and the spherical kettle bottom of the split-phase kettle is communicated with the spherical kettle bottom of the reaction kettle through a circulating pump; a split-phase kettle stirring paddle driven by a motor is arranged on the split-phase kettle along a vertical central axis; and the stirring paddle is positioned between water-phase baffles filled with a catalyst at the bottom of the split-phase kettle. When the device is used for preparing cyclohexene, the catalyst in the water phase is promoted to be uniformly distributed on the premise of ensuring that the oil phase and the water phase are not backmixed, so that the separation effect is ensured, the catalytic efficiency is also improved, and the industrial production requirement that the single set of cyclohexene is more than 300,000 tons per year can be met.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Resin catalyst for synthesizing CPME as well as preparation method and application of resin catalyst

The invention discloses a resin catalyst for synthesizing CPME and a preparation method and application thereof, and belongs to the technical field of fine chemical catalysis, and the preparation method comprises the following steps: by taking styrene, divinyl benzene and 4-vinyl cyclohexene as monomers, carrying out suspension copolymerization in the presence of a pore-foaming agent, a dispersing agent, an initiator and a water-phase polymerization inhibitor to prepare a copolymer white ball, and then carrying out extraction, washing and drying to obtain the resin catalyst for synthesizing CPME. And drying, screening, sulfonating with sulfur trioxide, and washing to obtain the product. According to the invention, a third monomer 4-vinyl cyclohexene is introduced into a traditional styrene-divinyl benzene copolymerization system, and the rigid cyclic structure can significantly enhance the thermal stability of a resin skeleton; the perfluorinated chain segments in the dispersant can be directionally arranged to the surfaces of resin particles in the polymerization process to form a hydrophobic protection layer, so that the stability of a catalyst and the selectivity of cyclopentene at a relatively high temperature can be remarkably improved.
Owner:DAN DONG MING ZHU TE ZHONG SHU ZHI YOU XIAN GONG SI

A method for preparing a carbon-containing material Ru-based catalyst

The application provides a preparation method of a carbon material Ru-based catalyst and application of the carbon material Ru-based catalyst in partial hydrogenation of benzene to cyclohexene. According to the activity test results, the introduction of the carbon material improves the benzene conversion rate and appropriately increases the selectivity of cyclohexene. This is mainly due to the rich functional groups on the surface of the carbon material and the unique electronic effect, which increases the dispersion of the metal Ru and stabilizes the Ru δ+ In the reducing reaction system. The application selects a fixed bed as an evaluation device of the cyclohexene, avoids the problems such as difficult separation of products and catalysts in the traditional autoclave device, is beneficial to continuous production of the cyclohexene and provides certain convenience for subsequent industrial application.
Owner:HUBEI XINGFA CHEM GRP CO LTD

Design synthesis of Co-based nano material and application of Co-based nano material in cyclohexene electrocatalytic oxidation

The invention provides design and synthesis of a Co-based catalyst electrode material and electro-catalysis of the Co-based catalyst electrode material for ultra-high selective oxidation of cyclohexene into cyclohexenol. The preparation method comprises the following steps: mixing cobalt nitrate hexahydrate, hexadecyl trimethyl ammonium chloride and urea, reacting, and treating to obtain spherical Co3O4; the method comprises the following steps: treating spherical Co3O4 by taking sodium phosphite as a phosphorus source to obtain Co3O4-P; the preparation method comprises the following steps: carrying out reaction on cobalt nitrate hexahydrate, urea and thiourea to prepare Co3O4-S. And the three catalysts are respectively loaded on the carrier carbon paper sheets to form corresponding electrodes. The catalyst electrodes are used for electrocatalytic oxidation of cyclohexene to prepare cyclohexenol with ultrahigh selectivity, the selectivity is as high as 99%, the Faraday efficiency is as high as 89.6%, and the cycle stability is excellent. The cost of the Co-based catalyst is lower than that of precious metal, and the Co-based catalyst has good catalytic activity, ultrahigh selectivity and poisoning resistance and has good application prospects in the industrial field.
Owner:ZHENGZHOU UNIV

Peach tree pest plant source attractant and application thereof

PendingCN121400441ABiocidePest attractantsPhellandreneVermin
The invention relates to a plant-source attractant for peach tree pests and application of the plant-source attractant. The plant-source attractant is selected from any one or more of beta-phellandrene, 3-methylene-6-(tert-amyl) cyclohexane-1-ene, 1-isopropyl-4-methylene cyclohexane, 4-methylene cyclohexane-1-ethyl formate, 4-oxoisophorone and 3-carene, and the plant-source attractant is selected from any one or more of beta-phellandrene, 3-methylene-6-(tert-amyl) cyclohexane-1-ene, 1-isopropyl-4-methylene cyclohexane, 4-methylene cyclohexane-1-ethyl formate, 4-oxoisophorone and 3-carene. The compound can be used for preparing a preparation for attracting peach tree pests outdoors. Compared with the prior art, the peach tree pest plant source attractant can trap and kill female adults in external environments such as a field, and the prevention and control effect is greatly improved.
Owner:EAST CHINA UNIV OF SCI & TECH