49 results about "Hydroperoxide decomposition" patented technology

Process for the preparation of phenol and cyclohexanone which comprises:

• • a. the synthesis of cyclohexylbenzene by the hydro-alkylation of benzene by contact with hydrogen or the alkylation of benzene with cyclohexene using Y zeolites;
  • b. the selective aerobic oxidation of cyclohexylbenzene to the corresponding hydroperoxide catalyzed by N-hydroxy-derivatives in the presence of polar solvents; and
  • c. the scission of the hydroperoxide of cyclohexylbenzene to phenol and cyclohexanone by homogeneous or heterogeneous acid catalysts;

characterized in that the synthesis of cyclohexylbenzene takes place in the presence of a catalytic system comprising a Y zeolite and an inorganic ligand wherein the Y zeolite has a crystalline structure with openings consisting of 12 tetrahedra and the inorganic ligand is γ-alumina, and wherein said catalytic composition is characterized by a pore volume, obtained by adding the mesoporosity and macroporosity fractions, greater than or equal to 0.7 cm³/g, wherein at least 30% of said volume consists of pores with a diameter greater than 100 nanometers.

The invention discloses a preparation method and an application of a metal organic framework material loaded with a Schiff base complex. Salen is formed by introducing salicylic aldehyde onto an amino functionalization metal organic framework material, then, Salen and transition metal ions form a complex, the metal organic framework material loaded with the Schiff base complex is prepared, and the material is applied to a cyclohexyl hydroperoxide decomposition reaction. The prepared catalyst is high in catalytic performance, the catalytic activity of the catalyst is basically not reduced after being recycled repeatedly, the catalyst is stable in performance and is applied to catalysis of the cyclohexyl hydroperoxide decomposition reaction, the decomposition conversion rate can reach 97%, the total selectivity of alcohol ketone can reach 99.8%, the good decomposition effect can be obtained without alkaline liquor, the environmental problem caused by the waste liquor is effectively avoided, the environmental pollution is significantly reduced, and meanwhile, the proportion of cyclohexanol to cyclohexanone is significantly increased.

The invention discloses a method for preparing cyclohexanone and cyclohexanol by decomposition of a cyclohexane oxidation liquid. The method comprises the following steps: a cyclohexane oxidation liquid is subjected to a homogeneous decomposition reaction in the presence of an oil-soluble catalyst isooctyl chromate at the reaction temperature of 100-160 DEG C at the pressure of 0.3-0.8 Mpa for 1.0-5 h; after the decomposition reaction, the decomposition liquor is cooled and then washed with alkali lye, followed by standing and alkali separation; then, an organic phase and an inorganic phase are obtained; and the organic phase is separated and refined so as to obtain cyclohexanone and cyclohexanol. By using the oil-soluble catalyst isooctyl chromate, the traditional thinking of using aqueous alkali for heterogeneous decomposition is broken through. By changing the catalytic system and reaction condition, cyclohexyl hydroperoxide decomposition rate reaches 99.8% and above, yield of cyclohexanone and cyclohexanol obtained after the decomposition is 98% and above, and ketone-to-alcohol ratio is 1.3:1 and above and far higher than the ratio of 1:1 in traditional basic decomposition. As the cyclohexyl hydroperoxide decomposition reaction needn't be carried out under the alkaline condition, consumption of alkali is also greatly reduced.

The invention provides a light adjusting film and a preparation method thereof.The light adjusting film comprises a first conductive layer, an adhesion layer, a polymer dispersing liquid crystal layer and a second conductive layer, wherein the adhesion layer is arranged on the surface of the first conductive layer, and light stabilizer is dispersed in the adhesion layer; the polymer dispersing liquid crystal layer is arranged on the surface, away from the first conductive layer, of the adhesion layer, and the second conductive layer is arranged on the surface, away from the adhesion layer, of the polymer dispersing liquid crystal layer.The light stabilizer is added to the adhesion layer of the light adjusting film, the light stabilizer has the functions of shielding or absorbing energy of ultrasonic rays, eliminating singlet oxygen, decomposing hydroperoxide into innactivated substances and the like, photochemical reaction can be avoided or relieved when the light adjusting film is under light radiation, the light ageing process of the light adjusting film is prevented or delayed, and the service life of the light adjusting film is prolonged.

The decomposition method of cyclodexyl hydrogen peroxide is characterized by that under the heterogeneous condition intermittently or continuously adding solid alklouli catalyst whose PKa=10-47 in decomposition reactor, controlling the weight ratio of the solid alkali catalyst and cyclodexane oxide product in 1:20-1:300, reaction temp. is 10 deg.C-170 deg.C, reaction time is 5-200 min. and can decompose the cyclodexyl hydrogen peroxide into cyclodexanone and cyclodexanol.

The invention relates to a method for preparation of cyclohexanone and cyclohexanol by decomposition of cyclohexyl hydroperoxide in a cyclohexane oxidation liquid, and the method is characterized in that, a sodium hydroxide solution and a cobalt acetate solution are added in different feeding ports of a tubular reactor, cobalt ion concentration of the inorganic phase is 1.5-10ppm, the volume ratio of organic phase to inorganic phase in the decomposition reactor is 5.0-7.0: 1, and the basicity is 0.7-3.0mol / kg. The decomposition reactor temperature is controlled at 85-120 DEG C, the cyclohexyl hydroperoxide decomposition rate is greater than or equal to 99.5%, the cyclohexanone and cyclohexanol yield is greater than or equal to 90%, and the ketone-alcohol ratio is more than 1.0.

A process for producing sec-butylbenzene comprises contacting a feed comprising benzene and a C4 alkylating agent under alkylation conditions comprising a temperature of about 110 DEG C to about 150 DEG C with a catalyst comprising at least one molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4+-0.25, 6.9+-0.15, 3.57+-0.07 and 3.42+-0.07 Angstrom. The sec-butylbenzene can be then oxidized to produce a hydroperoxide and the hydroperoxide decomposed to produce phenol and methyl ethyl ketone.

Disclosed is a process for cyclohexyl hydroperoxide (CHHP) decomposition using in aqueous alkaline solution in presence of cobalt catalyst.

The invention discloses a functionalized hexagonal mid-pore silica (HMS) material used in decomposition reaction of cyclohexyl hydroperoxide, the surface of functionalized hexagonal mid-pore silica material is superficial immobilized with one or a plurality of metal elements with cyclohexyl hydroperoxide decomposition ability. The material can be synthesized at room temperature by the sol-gel method. At a relatively low temperature, the material can be used as a catalyst for the catalytic liquid phase decomposition of the cyclohexyl hydroperoxide, and the material has high catalytic activity. Compared with catalysts in the prior art, the catalyst used in the invention has the advantages of being high in efficiency, cheap, convenient to use and the like.

The invention discloses an anti-ultraviolet honeycomb composite board. The honeycomb composite board comprises a honeycomb board core material, a honeycomb board panel and a honeycomb board panel basebottom film, wherein the honeycomb board panel is compounded together with the honeycomb board core material through the honeycomb board panel base bottom film; the honeycomb board panel is made of the following components in parts by weight: 40 to 100 parts of thermoplastic material, 0.5 to 1.5 parts of coupling agent, 0.5 to 2 parts of dispersing agent, 0.1 to 5 parts of ultraviolet light absorber and 0.1 to 5 parts of radical scavenger; the honeycomb board panel base bottom film is made of the following components in parts by weight: 90 to 100 parts of glass fiber cloth material, 0.5 to 1.5 parts of coupling agent, 0.5 to 2 parts of dispersing agent and 0.1 to 5 parts of quenching agent; the honeycomb board core material is made of the following components in parts by weight: 40 to 100 parts of thermoplastic material, 0.5 to 1.5 parts of coupling agent, 0.5 to 2 parts of dispersing agent, 0.1 to 3 parts of hydroperoxide decomposer and 0.1 to 3 parts of radical scavenger. In the honeycomb composite board, different light stabilizers are added, so that the honeycomb composite board has an ultraviolet absorption capability, the negative effect of ultraviolet radiation on the honeycomb composite board is lowered, and the service life of the honeycomb composite board is prolonged.

The invention discloses a processing technology of low-energy-consumption environment-friendly carbon black. Pre-treated carbon black and graphene are compounded by taking polyvinyl alcohol 600 as a binder to prepare environment-friendly carbon black, in this way, other toxic binders are avoided, greenness and environmental protection of the carbon black preparation technology are ensured, and meanwhile, no high-power equipment is used for treatment, so that the energy consumption of the carbon black preparation is reduced, the modified carbon black and the reinforcing agent are prepared during the preparation process, the reinforcing agent molecule contains a large amount of hindered amine and hindered phenol structure, the generated free radical or hydroperoxide decomposition can be promoted, the chain reaction can be prevented and the free radical reaction can be eliminated when the reinforcing agent is blended with the rubber, free radicals can generate stable substances to achieve an anti-aging effect, and meanwhile, a mercaptobenzothiazole structure on a molecule can participate in a vulcanization cross-linking reaction of rubber, so that the interaction between the environment-friendly carbon black and rubber quality inspection is enhanced, the reinforcing effect is improved, and the dispersity of filler is promoted.

The invention discloses a production process of a T buckle. The T buckle is prepared from the following raw materials in parts by weight: 80 to 90 parts of polyformaldehyde, 10 to 20 parts of polyurethane, 0.3 to 0.7 part of an antioxidant 1010, 0.1 to 0.5 part of a phosphorous acid aid and 0.2 to 0.6 part of an anti-ultraviolet agent. According to the production process of the T buckle, the arranged antioxidant 1010 can react with free radicals generated by a polymer to interrupt the chain reaction of molecular chains, so that free formaldehyde is deactivated; hydroperoxide can be decomposedinto inactive products through the arranged phosphorous acid aid so as to inhibit the automatic catalytic action of the hydroperoxide, and the antioxidant 1010 and the phosphorous acid aid can generate a strong synergistic effect; the antioxidant is used together with an ultraviolet light absorber, so that active products formed by the antioxidant under illumination can be eliminated, the sulfideis prevented from being decomposed, and the antioxidant is a light-resistant and heat-resistant antioxidant stable system; and along with the time and the temperature rise, the thermal oxidative degradation of the plastic can be reduced, and the stability of the plastic during molding processing is improved.

The invention discloses a simulated flower material with long effect fragrance and a preparation method thereof. The simulated flower material is prepared from the following raw materials in parts byweight: 25 to 40 parts of polypropylene, 20 to 25 parts of polyvinyl chloride, 20 to 30 parts of polyfluortetraethylene, 3 to 5 parts of tritolyl phosphate, 1.5 to 2.0 parts of zinc stearate, 1.5 to 2.0 parts of calcium stearate, 1.0 to 1.5 parts of 2-(2'-hydroxy-5'-methyl phenyl)benzotriazole, 1.0 to 1.5 parts of phenyl salicylate, 1 to 1.5 parts of liquid paraffin, 10 to 15 parts of talcum powder, 1.5 to 2.0 parts of aluminum oxide powder, 0.5 to 1.0 part of hydroperoxide decomposing agents, 1.5 to 3.0 parts of polyacrylamide, 5 to 10 parts of fragrance slow release agents, 0.1 to 0.5 part of coupling agents and 2 to 4 parts of color master batch. The fragrance slow release agent is added into a plastic substrate; the goal of slowly releasing the fragrance is achieved; the fragrance preservation period of a product is prolonged and can reach about two years.

The invention provides a synthesis method of an oil-soluble catalyst isooctyl chromate, comprising the following steps of dissolving chromic oxide into water, dropwise adding an aqueous solution of the chromic oxide to isooctyl alcohol while stirring, controlling the reaction temperature to be 10 to 60 DEG C and the dropwise adding time to be 0.5 to 1.0h, after the adding is finished, continuously stirring to react for 0.5 to 1.5h, extracting an organic phase after the reaction is finished, wherein an obtained extract phase is the oil-soluble catalyst isooctyl chromate. When the obtained oil-soluble catalyst isooctyl chromate is applied to the cyclohexyl hydroperoxide decomposition reaction, the decomposition rate of the cyclohexyl hydroperoxide is greater than 99.0 percent, and the ketone-alcohol radio is greater than 1.2 to 1.