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A method for decomposing hydrogen peroxide in a decomposition catalyst and its epoxidation reaction product

A technology of epoxidation reaction and hydrogen peroxide, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems that there are no public reports on the direct decomposition of hydrogen peroxide, and eliminate the potential Hazards, safety-enhancing effects

Active Publication Date: 2019-03-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, there have been no published reports on the direct decomposition of hydrogen peroxide in epoxidation reaction products comprising alkenes, alkylene oxides, reaction solvents, water, and epoxidation reaction by-products

Method used

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Examples

Experimental program
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preparation example Construction

[0019] According to the method of the present invention, wherein, the preparation method of the hydrogen peroxide decomposition catalyst comprises: 1) combining IIIA group metal hydroxides or oxides, IVB group metal oxides, acidic aluminum sol, organic extrusion aids, organic The pore agent and the paste-forming agent are fully kneaded to obtain a wet plastomer, and then the wet plastomer is extruded into a wet strip; 2) the wet strip obtained in step 1) is dried and roasted to obtain a wet strip containing Metal oxide catalysts of Group IVB metal oxides and Group IIIA metal oxides; 3) impregnating the metal oxide catalysts obtained in step 2) with Group VIB metal salt solutions and Group IB metal salt solutions, followed by drying and roasting to obtain A composite metal oxide catalyst of Group IVB metal oxides, Group VIB metal oxides, Group IB metal oxides and Group IIIA metal oxides.

[0020] According to the method of the present invention, wherein, in said step 1), said I...

Embodiment 1

[0039] 300.05 grams of aluminum hydroxide powder (69.2% by mass of aluminum oxide content, produced by Hunan Changlian Catalyst Factory), 53.54 grams of titanium dioxide (chemically pure reagent) with a titanium dioxide content of 98% by mass, 60.00 grams of starch (analytical pure reagent), 7.50 Ke Tianjing powder (produced by Henan Lankao Vegetable Gum Factory), 422.38 grams of aluminum oxide content is the aluminum sol (produced by Hunan Jianchang Petrochemical Co., Ltd.), 22.51 grams of octylphenol polyoxyethylene (15) ether ( OP-15, produced by Hebei Xingtai Kewang Chemical Auxiliary Co., Ltd.) and 49.54 grams of dilute nitric acid with a nitric acid content of 2.0% by mass are fully kneaded in a multifunctional catalyst molding machine (produced by South China University of Science and Technology Industry General Factory) to obtain wet plasticity body, and then extruded into a solid cylindrical strip of φ1.2mm, dried at 24-28°C for 27 hours, then placed in a drying oven a...

Embodiment 2

[0045] Adopt the method identical with embodiment 1 to prepare composite metal oxide catalyst and carry out the catalytic decomposition of hydrogen peroxide, difference is: be dissolved with 50.00 gram aqueous solution of 4.971 gram ammonium molybdate tetrahydrate and 3.400 gram copper nitrate trihydrate in Impregnate 30.00 grams of cylindrical bar catalysts containing 14.80% by mass of titanium dioxide and 85.20% by mass of alumina at 25 to 35°C for 18 hours, then dry the impregnated substance at 120°C for 18 hours, and then bake the dried substance at 650°C for 12 hours, After natural cooling, a columnar composite metal oxide catalyst containing 12.62% by mass of titanium dioxide, 11.52% by mass of molybdenum trioxide, 3.18% by mass of copper oxide and 72.68% by mass of alumina was obtained. The hydrogen peroxide decomposition results of the catalyst are shown in Table 2.

[0046] Table 2

[0047] Reaction time / h

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Abstract

A decomposition catalyst is characterized by being prepared from, by mass, 1-20% of IV B-metallic oxide, 1-20% of VI B-metallic oxide, 1-20% of IB B-metallic oxide and 40-97% of III A-metallic oxide. By means of the catalyst, most part of hydrogen peroxide left in an epoxidation reaction product of 3-chloropropene and hydrogen peroxide is decomposed before distillation separation, potential harm of the excessive content of hydrogen peroxide in the epoxidation reaction product to the subsequent distillation separation process is effectively eliminated, and safety of producing epoxy chloropropane through epoxidation reaction of 3-chloropropene and hydrogen peroxide is improved.

Description

technical field [0001] The invention relates to a hydrogen peroxide decomposition catalyst and a method for decomposing hydrogen peroxide in the epoxidation reaction product of 3-chloropropene and hydrogen peroxide. Background technique [0002] Hydrogen peroxide is a green oxidizing agent, as disclosed in USP4,833,260, in the presence of titanium-silicon molecular sieve catalyst and solvent methanol, through the epoxidation reaction of 3-chloropropene and hydrogen peroxide, the ring can be efficiently and cleanly synthesized Oxychloropropane. Epichlorohydrin is an important basic organic chemical raw material and intermediate, widely used in the synthesis of various industrial products such as epoxy resin, chlorohydrin rubber, pharmaceuticals, pesticides, surfactants and plasticizers. [0003] CN101747296A and CN101747297A further disclose the method for producing epichlorohydrin by the epoxidation reaction of 3-chloropropene and hydrogen peroxide, and realize that the con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/885C07D301/12C07D301/32C01B13/02C01B5/00
Inventor 张永强刘易杜泽学
Owner CHINA PETROLEUM & CHEM CORP
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