1419 results about "Cyclohexanol" patented technology

The preparation process of small crystal grain ZSM-5 zeolite includes the following steps: mixing alumino sillica gel grain in SiO2/Al2O3 molar ratio of 20-600 and granularity of 20-300 mesh and water solution of organic template agent, and hydrothermal crystallization of the mixture with or without ZSM-5 zeolite crystal seed; and once filtering, drying and roasting. The said process can preparing ZSM-5 zeolite product with Si/Al molar ratio of 15-200 and initial crystal granularity of 0.1-0.5 micron. The process uses no sodium ion material, needs no ammonium exchange, filtering and roasting process, and thus has high zeolite product yield and simplified production process. The zeolite product is used in the catalyst for hydrolyzing cyclohexene to prepare cyclohexanol and has high cyclohexanol converting rate.

An exemplary printable composition of a liquid or gel suspension of diodes comprises a plurality of diodes, a first solvent and/or a viscosity modifier. In other exemplary embodiments a second solvent is also included, and the composition has a viscosity substantially between about 100 cps and about 25,000 cps at about 25° C. In an exemplary embodiment, a composition comprises: a plurality of diodes or other two-terminal integrated circuits; one or more solvents comprising about 15% to 99.9% of any of N-propanol, isopropanol, dipropylene glycol, diethylene glycol, propylene glycol, 1-methoxy-2-propanol, N-octanol, ethanol, tetrahydrofurfuryl alcohol, cyclohexanol, and mixtures thereof; a viscosity modifier comprising about 0.10% to 2.5% methoxy propyl methylcellulose resin or hydroxy propyl methylcellulose resin or mixtures thereof; and about 0.01% to 2.5% of a plurality of substantially optically transparent and chemically inert particles having a range of sizes between about 10 to about 50 microns.

The invention discloses a preparation method of hydrogenated xylylene diisocynate. The preparation method of the hydrogenated xylylene diisocynate comprises the following steps: (1) performing salt forming reaction on 1,3-cyclohexanol dimethylamine and concentrated hydrochloric acid in a two-phase reaction solvent to obtain amine salt, wherein the two-phase reaction solvent consists of water and an inert organic solvent insoluble in water ; (2) performing photochemical reaction on the ammonium salt obtained in the step (1) and phosgene in an inert solvent by taking N,N-dimethylformamide or N,N-dimethylacetamide as a catalyst to obtain reaction liquid, and performing aftertreatment on the reaction liquid to obtain the hydrogenated xylylene diisocynate. The preparation method of the hydrogenated xylylene diisocynate has the advantages of complete ammonium salt formation, small grain size of the ammonium salt, low viscosity of the ammonium salt, high space-time conversion rate of photochemical reaction, simple process, low cost and the like.

The invention relates to a new process in which under the catalytic action of metal porphyrin the cyclohexane can be selectively oxdated by air and made into cyclohexanol and cyclohexanone. Under the condition of 2-10 atm air, reaction temp. is 125-150 deg.C, it selects and uses micro-oxo double metal porphyrin and single metal porphyrin or their solid carrier as main catalyst, and uses transition metal salt or oxide as co-catalyst, the metal porphyrin can high-effectively and high-selectively catalyze oxidation of cyclohexane by using air in the biological concentratino as biological enzyme. The dose of metal porphyrin is small and said metal porphyrin can be repeatedly used, and said catalyst dose also is small, its catalystic effect is good, said catalyst can be used for making homogeneous catalysis, and after it is solid-carried, it also can be used for making heterogeneous catalysis.

A process for preparing cyclohexanol, cyclohexanone and adipic acid by catalytic oxidization of cyclohexane under existance of metallic porphyrin catalyst and a certain temp and pressure through combination of different reactors is disclosed. Its advantages are high single-pass conversion rate of cyclohexane and total output rate, low energy consumption and cost, and no need of cyclohexanol or acetone solvent and cocatalyst.

The present invention relates to a new process for preparing adipic acid by air oxidating cyclohexane, cyclohexanol, cyclohexanone and cyclohexene or mixture of cyclohexanol and cyclohexanone under the catalysis of metal porphyrin. Under the condition of 1-20 atm air and reaction temp. is 50-200 deg.C it can select and use mu-oxidized metal porphyrin and monometal porphyrin or their fixed carrier material as catalyst independently, also can select and use metal porphyrin or their fixed carrier material as main catalyst, and use transition metal salt or oxide as co-catalyst. The metal porphyrin like biological-enzyme can high-effectively and high-selectivity catalyze air under the biologicae concentration to directly oxidate the cyclohexane into adipic acid. Said invented dose of metal porphyrin is less, and its catalytic effect is good, it can make homogeneous catalysis, also can make heterogeneous catalysis after the carrier is fixed.

The invention discloses a carrier nanometer gold catalyst gold catalyst and relative preparing method. Said invention is formed by Au, Al, and Ti/Si, Ag, Cu, Ce, Fe, or Zn. Wherein, Au is the main active component of catalyst, whose mass percentage is 0.1-4.0%; Al is the carrier of catalyst, whose mass percentage is larger than 90%; Ti or Si is the agent of catalyst carrier, whose mass percentage is 0.01-1.0%; Ag, Cu, Ce, Fe, or Zn is used as the auxiliary active component of catalyst, whose mass percentage is 0.1-5.0%. The invention has the advantages that: the gold is distributed uniformly, and the graininess of attained gold particle can be adjusted easily; the catalyst has high stability; and it can apply the oxide carrier for carrying gold whose isoelectric point pH is less than 6 and made by coprecipitation method. The invention has be used to apply the cyclohexane to prepare the nadone and cyclohexanol, with better activity and selectivity, less used amount and recycle support.

A ZSM-5 zeolite with 15-200 for the mole ration of silicon oxide to aluminium oxide, 0.5-10 microns for diameter, and 25-250 sq.m/g for mesopore surface area is prepared from the large-grain zeolite through treating in alkaline aqueous solution, ammonium ion exchanging, drying, and calcining. Said zeolite can be used to prepare cyclohexanol from cyclohexene by hydrating with high conversion rate, easy separation from liquid phase and easy filter.

PURPOSE: To easily obtain the titled alcohol wherein one of both terminals is quantitatively capped, at a low cost, by polymerizing THF in the presence of an active hydrogen-containing compound using a Lewis acid and a cyclic ether as polymerization initiators. CONSTITUTION: A polyether monoalcohol is produced by polymerizing tetrahydrofuran in the presence of a compound containing one active hydrogen atom in one molecule using a Lewis acid and a 3-4-membered cyclic ether. The active hydrogen-containing compound is a compound having hydroxyl group, carboxyl group or thiol group, e.g. methanol, cyclohexanol, etc., and the ether is selected from epoxides or oxetanes.

The invention discloses a method for preparing cyclohexanol by catalyzing phenol hydrogenation by taking a porous carbon material loaded base metal as a catalyst. The synthetic route of the traditional two-step method comprises phenol hydrogenation and cyclohexanol dehydrogenation, and the catalysis of phenol hydrogenation in preparing cyclohexanol is mainly completed through metals, namely nanometer noble metal Pd, Ni radical and the like which have higher activated cracked hydrogen molecules. The method is characterized in that cyclohexanol is prepared in the presence of a solvent by using the porous carbon material loaded base metal as the catalyst, taking phenol or a phenol derivative as a raw material and catalyzing hydrogenation; a general formula of the catalyst is aM@CXy, wherein a indicates the weight percentage content of the metals contained in the catalyst, M indicates the base metal, C indicates carbon, X indicates a doped mixed element, and y indicates the weight percentage content of the mixed element. The method disclosed by the invention can be used for reducing the usage cost of the catalyst by recovering the catalyst by adopting a simple filtering method, and can obtain cyclohexanol by directly concentrating filter liquor obtained through filtration.

The invention provides a method for producing caprolactam by taking high-purity benzene as a raw material, and the method comprises the following steps of: A. preparing cyclohexene from the raw material benzene through hydrogenation; B. separating and purifying cyclohexene; C. carrying out hydration on the cyclohexene for preparing cyclohexanol; D. separating and purifying cyclohexanol; E. carrying out dehydrogenation on cyclohexanol for preparaing cyclohexanone; F. refining cyclohexanone; G. carrying out oximation on cyclohexanone so as to prepare cyclohexanone-oxime; H. refining cyclohexanone-oxime; I. carrying out rearrangement on refined cyclohexanone-oxime so as to prepare caprolactam; and J. refining caprolactam, wherein the high-purity benzene is adopted as a raw material, so that the purity of benzene is more than 99.95%, the sulphur content is less than 5ppm, and the methylbenzene is not more than 100ppm. The method has the beneficial effects that the high-purity benzene is adopted as a raw material, so that the impurity is less, and the product quality is high; the raw material is high in comprehensive utilization rate and low in hydrogen consumption; and the mass of the raw material and intermediate products generated in all the steps of reaction can be strictly controlled, so that the direct commercial value of the intermediate products is fully exerted, and the optimal quality of the product caprolactam can be reached.

An exemplary printable composition comprises a liquid or gel suspension of a plurality of metallic nanofibers; a first solvent; and a viscosity modifier, resin, or binder. In various embodiments, the metallic nanofibers are between about 10 microns to about 100 microns in length, are between about 10 nm to about 120 nm in diameter, and are typically functionalized with a coating or partial coating of polyvinyl pyrrolidone or a similar compound. An exemplary metallic nanofiber ink which can be printed to produce a substantially transparent conductor comprises a plurality of metallic nanofibers; one or more solvents such as 1-butanol, ethanol, 1-pentanol, n-methylpyrrolidone, cyclohexanone, cyclopentanone, 1-hexanol, acetic acid, cyclohexanol, or mixtures thereof; and a viscosity modifier, resin, or binder such as polyvinyl pyrrolidone or a polyimide, for example.

The invention discloses a bicolor Eu-MOFs/CDs fluorescent material as well as preparation and an application thereof. Europium ions, trimesic acid and carbon quantum dots are used as raw materials, and the bicolor fluorescent material is prepared through heat treatment in a solvent prepared by mixing N,N-dimethylformamide, distilled water and cyclohexanol. Under irradiation of ultraviolet lamps, the material can emit red fluorescence when dispersed in organic solvents and can emit blue fluorescent when dispersed in water, so that fluorescent colorimetric sensors for measuring water content in organic solvents can be prepared from the material, the prepared sensors are high in sensitivity, good in stability and low in cost and have higher population value and brighter application prospect.

A technology for treating organic waste water and resources is carried out by taking one or two or above organic waste water of phenol, aniline, toluene, butylenes oxide, cyclohexanol, N,N-dimethyl-formamide, methyl cyanide, methanol, methanol, methane acid etc. as raw materials, reform reacting organic substance with water at 180-350 degree under action of ranikel catalyst and 1-16 M pa and generating hydrogen, methane, carbon dioxide and carbon monoxide. It's cheap and efficient and has continuous or intermittent production.

The present invention discloses a supported gold nano-particles catalyst and the preparation method of the same, which comprises Au, Ce, Zr, Al and Si; wherein Au is the main active component and has a mass percent of 0.1~4.0%; Ce and Zr are the assistant active component and has a mass percent of 3~57%, wherein the mol ratio of Ce to Zr is 1~10; Al and Si are the carrier and has a mass percent of 40~97%. The catalyst is prepared by a sequential immersion method, wherein the alumina or silicon oxide carrier is firstly impregnated by an aqueous liquid containing cerous nitrate and zirconium nitrate and then the gold component is impregnated. The present invention has the advantages of that: the preparation method is simple, the stability is excellent and the cost is low. For the reaction of preparing cyclohexanone and cyclohexanol by cyclohexane oxygenation, the catalyst of the present invention can obtain high ketone alcohol selectivity even under the condition of a high conversion, besides the peroxide content in the product is very low. For example, when the conversion of cyclohexane is 12.8%, the ketone alcohol selectivity is up to 92.6% and the peroxide content is only 0.7%.

The invention discloses a method for preparing cyclohexanol by using cyclohexene. The method comprises the following steps of: (1) adding cyclohexene, carboxylic acid and catalyst into a reactor, heating the mixture to 100 to 150 DEG C and keeping the temperature to perform a reaction for 0.5 to 8 hours, wherein the mole ratio of the cyclohexene to the carboxylic acid is 1: 0.5-10, the use amountof the catalyst is 0.05 to 0.5 grams of catalyst per millimeter carboxylic acid, and the system pressure is the system self-generated pressure at the reaction temperature; and (2) after step (1) finishes, adding de-ionized water into the reactor, heating the mixed solution to 150 to 200 DEG C and continuously performing a reaction for 0.5 to 8 hours to obtain the cyclohexanol, wherein the volume ratio of the added de-ionized water to the original cyclohexene is 1 to 20: 1. In the invention, a simple intermittent reactor is adopted and the two reaction steps are completed in one reactor, so the equipment investment is small, the operation is simple and the cost is low. Besides, the catalyst used is easy to separate and can be repeatedly used, so the production cost is reduced.

The present invention relates to a process for preparing chiral non-racemic cis-configured cyclohexanols or cyclohexanol derivatives of the formula (I)

Cis-configured hydroxyl-cyclohexane carboxylic acid derivatives of formula (I) are central building blocks or immediate precursors for the medicinally active compounds which allow a therapeutic modulation of the lipid and/or carbohydrate metabolism and are thus suitable for preventing and/or treating type II diabetes, hyperglycemia and artherosclerosis. The cis-configured hydroxyl-cyclohexane carboxylic acid derivatives of formula (I) are central building blocks or immediate precursors for the medicinally active compounds described in the prior art.

A process for selectively oxidizing alkyl cyclohexane by air under the catalysis of mu-oxygen bimetal porphyrin, single-metal porphyrin, or their solid carried substance to become alkyl cyclohexanol and alkyl cyclohexanone is disclosed. Said alkyl cyclohexane may be methyl cyclohexane, ethyl cyclohexane, isopropyl cyclohexane, etc. Its advantages are low cost, high catalytic performance, low reaction temp (less than 200 deg.C) and high transform rate.

The invention designs and synthetizes a supermolecule polymer framework material. The supermolecule polymer framework material is formed through self assembly in cyclohexanol by using naphthalimide functionalized pillar [5] arene as a subject and bilateral quaternization pillar [5] arene as an object, wherein the mole ratio of the subject to the object is 1:1. Through competitive coordination mechanism, the supermolecule polymer framework material (SOF-AP5-MJP5) and a metal supermolecule polymer framework material (M-SOF-AP5-MJP5) can respectively realize continuous response and high-sensitivity detection to Fe<3+> and H2PO4<->; the recognition performance has important application values in the field of ion recognition.

The present invention relates to synthesis process of cyclohexanone and cycloexanol, especially through hydrogenating phenol. Phenol material, C1-C2 fatty alcohol and water in the weight proportion of 1 to 2.5-40 to 10-160 are reacted in one step at 100-300 deg.c temperature and 1-10 MPa pressure and in the action of Renny Ni catalyst or active carbon supported palladium catalyst to synthesize cyclohexanone and cycloexanol. The present invention features no need of outer hydrogen supply for hydrogenating phenol and the use of relatively cheap Renny Ni catalyst, and has the advantages of high safety, simplified technological process, low production cost, high phenol converting rate, high total cyclohexanone and cycloexanol selectivity near 100 %, no side product and easy product separation.

The invention relates to a method for preparing magnetic porous polystyrene microspheres on the basis of suspension polymerization, belonging to the technical field of preparation of environmental functional materials. The method comprises the following steps: synthesizing Fe3O4 magnetic particles by a solvothermal process; and preparing magnetic porous polystyrene microspheres by suspension polymerization by using styrene and divinylbenzene as functional monomers, azodiisobutyronitrile as an initiator and toluene and cyclohexanol as pore-forming agents. The obtained microspheres have abundant pores on the surface, thereby being beneficial to enhancing adsorbability; and the Fe3O4 magnetic particles inside the microspheres have magnetic stability, and can be quickly separated under the action of an external magnetic field. The adsorbent is used in a water environment for selectively adsorbing 2,4-dichlorophenol and 2,6-dichlorophenol. The static adsorption experiment result indicates that the magnetic porous microspheres prepared by the method have the advantages of favorable adsorption capacity, quick adsorption kinetic property and favorable regenerability.

The invention provides an application and a preparation method of a ZSM-5 molecular sieve with mesopores and micropores. The preparation method includes steps of precursor preparation, silica-alumina gel preparation and preparation of the ZSM-5 molecular sieve with the mesopores and micropores.In a preparation process of a hierarchical porous catalyst, consumption of a microporous templating agent and a mesoporous templating agent can be substantially reduced, synthesis steps of the hierarchical porous catalyst are simple, and the synthesized molecular sieve is large in specific surface area, uniform in particle size and controllable in mesopore quantity and size, and intrinsic lipophilicity of the molecular sieve is enhanced due to abundant surface terminal hydroxide radicals. By adoption of the molecular sieve as the catalyst, a method for preparing cyclohexanol by direct hydration of cyclohexene is established, and the catalyst is high in cyclohexene conversion rate and cyclohexanol selectivity.