189 results about "Cyclohexenes" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

The present invention relates to a method for preparing phthalic acid esters. The method for preparing phthalic acid esters comprises the following steps: first, acetaldehyde and ethyl acrylate undergo a Bayes-Hillman reaction in the presence of triethylenediamine as a catalyst to produce an enester; second, the enester produced in the first reaction undergoes a one-step dehydration and Diels-Alder reaction with ethyl acrylate to produce cyclohexene dicarboxylic acid ester; and third, the cyclohexene dicarboxylic acid ester undergoes a dehydrogenation reaction in the presence of a metal catalyst to produce the phthalic acid ester. The method has simple reaction conditions, readily available catalysts, and low cost, and is a biomass-based method for synthesizing plasticizers with great industrial potential.

The application belongs to the technical field of organic compounds, and particularly relates to a preparation method of 3-[3-(dimethylamino)methyl-1-cyclohexen-2-yl]phenol hydrochloride and isomers thereof. The preparation method comprises the following steps: heating and reacting compound III with an acid, then adding sodium hydroxide to adjust the pH value to be alkaline; then continuously adding an extractant to extract, separating to obtain a water layer, introducing carbon dioxide into the water layer, and precipitating white solids in the water layer; filtering to obtain a mixture of compound VI and compound VII; dissolving the mixture of compound VI and compound VII in a polar organic solvent, introducing hydrogen chloride gas, and performing crystallization and filtration to obtain compound I; and concentrating, filtering and recrystallizing the mother liquor to obtain compound II. The application simplifies the preparation process of tramadol analogs and integrates the process into two-step reactions; the molecular structure of tramadol hydrochloride is designed to optimize the existing problems of individual differences in analgesic effect and side effects of original tramadol and analogs.

The invention discloses a cyclohexene diketone lactic acid oxime ether compound as shown in a formula I, and a stereoisomer, a tautomer, a solvate or a pesticide acceptable salt thereof, and in the formula I, R1-R4 are defined in the specification. The compound as shown in the formula I contains a specific lactic acid or lactic acid derivative structural fragment, has very high herbicidal activity and safety, and has a good control effect on resistant weeds at the same time.

The application discloses a method for preparing adipic acid from cyclohexene by electrocatalysis, which comprises the following steps: (I) generating hydrogen peroxide by electrocatalytic reduction of oxygen at a cathode; (II) reacting the hydrogen peroxide with cyclohexene to obtain cyclohexanediol; (III) generating adipate by electrocatalytic oxidation reaction of the cyclohexanediol at an anode; and (IV) obtaining solid adipic acid by acidification, washing and drying of the adipate. The method utilizes renewable energy to drive the electrochemical reaction and realizes the cascade reaction from cyclohexene to adipic acid. The preparation method is mild, green and environmentally friendly, and has high product selectivity. The cathode oxygen reduction and the anode cyclohexanediol oxidation are performed by using renewable energy, the hydrogen peroxide generated at the cathode reacts with the cyclohexene in a flow system to generate the cyclohexanediol, the reaction solution can be directly injected into the anode for reaction, and only oxygen, dilute alkali solution and dilute acid solution are input in the reaction process in addition to the cyclohexene, thereby avoiding the use of strong acid and strong oxidant.

The invention belongs to the technical field of chemical engineering, and particularly relates to an energy-saving method and device for byproduct cyclohexane. Comprising the following steps: a, an extractive distillation process: performing primary extractive distillation on a material containing methyl cyclopentene, cyclohexane, cyclohexene and benzene to obtain an alkene solution at the top of the tower and an alkene solution at the bottom of the tower; performing secondary extractive distillation on the obtained alkane-alkene solution to obtain a crude cyclohexane solution at the tower top and an alkene solution at the tower bottom; performing tertiary extractive distillation on the obtained benzene-alkene solution to obtain a cyclohexene product at the tower top and a benzene solution containing benzene and a solvent at the tower bottom; b, a hydrofining process: carrying out hydrogenation reaction on the crude cyclohexane solution; and c, a rectification separation process: carrying out rectification on the hydrogenated cyclohexane solution in a low-pressure tower. According to the method, cyclohexane as a byproduct in the process of separating cyclohexene through three times of extractive distillation needs to consume a large amount of heat for refining, and the heat is recovered and used for extractive distillation, so that the energy consumption of the whole process can be reduced.

The invention discloses a preparation method and application of a tetragonal biconical titanium dioxide supported ruthenium catalyst, and the tetragonal biconical titanium dioxide supported ruthenium catalyst is obtained by preparing a tetragonal biconical anatase TiO2 carrier through combination of a hydrothermal method and calcination and then carrying out hydrothermal in-situ loading and reduction of a ruthenium compound solution by using glucose. The core advantage of the catalyst is the dual synergistic effect of the carrier and the electronic state: the tetragonal bipyramid structure endows the catalyst with high stability, and the deactivation of the catalyst can be greatly reduced; the electron transfer of Ru to the carrier weakens the adsorption energy of cyclohexene, a high-proportion special electronic state Ru beta / Ru alpha is obtained, the surface hydrophilicity is optimized, and the rapid desorption of the target product cyclohexene is promoted. In addition, the cost is reduced by utilizing biomass reduction, the high dispersity of Ru is realized, and under the Ru loading capacity of 10wt.%, when the benzene conversion rate of the catalyst reaches 48.67%, the cyclohexene selectivity reaches up to 82.25%, and the cyclohexene yield reaches 53.22%.

The application discloses a recycling method of by-product cyclohexene distillation still residue, and belongs to the technical field of recycling of by-product cyclohexene distillation still residue. The still residue is analyzed by liquid chromatography-mass spectrometry, and the chlorocyclohexane in the still residue is reacted with sodium disulfide under the condition of a catalyst. After static separation, the oil phase is refined to obtain dicyclohexyl disulfide and cyclohexene, and the water phase can be recycled. The catalyst is composed of sulfonated castor oil and a phase transfer catalyst, can improve the conversion rate of chlorocyclohexane and the selectivity of dicyclohexyl disulfide, and greatly shortens the reaction time. The application can realize recycling and utilization of the still residue, avoids waste of resources and pollution to the environment, saves the chemical production cost, and meets the environmental protection concept of green chemical industry.

The present invention provides a polyamino acid polymer material having the following chemical formula: R1 is a hydrophilic amino acid repeating segment or a combination of hydrophilic and hydrophobic amino acid repeating segments; R2 is a linker for connecting the hydrophilic group and the hydrophobic group; R3 is a transitional moiety for reinforcing the connection of the hydrophobic group and preventing substitution reactions; the six-membered ring in the formula is selected from at least one of a benzene ring, cyclohexane, heterocyclohexane, cyclohexene, heterocyclohexene, pyridine, or pyran; and n and m are natural numbers. The present invention uses a polyamino acid polymer material instead of PEG lipids, effectively avoiding the effects of pre-existing anti-PEG antibodies, exhibiting good biodegradability, effectively improving the physical dispersion stability of nanoparticles, and increasing the long-term circulation of nanoparticles in the body. The four-component formula of traditional lipid nanoparticles can be reduced to a three-component formula, resulting in excellent stability of the prepared liposomes and nanocrystal preparations over a certain period of time while retaining the inherent drug-loading advantages of liposomes.

The invention discloses a green and environment-friendly synthesis method for preparing a high-crystallinity mesoporous ZSM-5 molecular sieve and application thereof, and belongs to the technical field of catalysts and synthesis thereof. On the basis of a template-free synthesis scheme, a mother liquor waste liquid with a template is added as a seed crystal liquid to prepare a high-crystallinity ZSM-5 molecular sieve, and then the high-crystallinity mesoporous ZSM-5 molecular sieve is prepared through alkali treatment. The ZSM-5 molecular sieve prepared by the invention does not need to be roasted in the whole preparation process, is a green and environment-friendly synthesis route, and can effectively save the production cost and reduce the energy consumption. The molecular sieve has a rich pore structure and a larger specific surface area at the same time, oil and gas components can enter pores of the molecular sieve easily, the diffusion path is short, the mass transfer rate in the reaction process is higher, the generated product can be rapidly diffused out, and the conversion rate of the molecular sieve in the cyclohexene hydration reaction can be effectively improved.

The application relates to the technical field of cyclohexene hydration and catalysts, and discloses a modified ZSM-5 molecular sieve and application of the modified ZSM-5 molecular sieve in preparation of cyclohexanol through cyclohexene hydration; the modified ZSM-5 molecular sieve comprises a ZSM-5 molecular sieve core, the core is expanded and then subjected to sulfonation treatment, then SiO2 is coated on the surface of the core to form a core-shell structure; after the core-shell structure is subjected to hydrophobic modification, a zirconium oxide layer is deposited on the surface, and a ZrO2-SiO2@SO3H-ZSM-5 molecular sieve is obtained. The molecular sieve is used as a catalyst in a cyclohexene hydration reaction, the conversion rate is more than 25%, the selectivity is more than 99.5%, and the activity is stable after 6 cycles; the catalyst has excellent catalytic performance, provides a new idea for current two-phase catalytic reactions, and is expected to be applied to an industrialized device for cyclohexene hydration.