Catalyst for decomposing hydrogen peroxide and method for decomposing hydrogen peroxide in epoxidation reaction product

A technology of epoxidation reaction and hydrogen peroxide, applied in metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical instrument and method, etc. report and other issues to achieve the effect of eliminating potential hazards and improving safety

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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Effect test

preparation example Construction

[0018] According to the method of the present invention, wherein, the preparation method of described hydrogen peroxide decomposition catalyst comprises: 1) with IIIA group metal hydroxide or oxide compound, VB group metal salt or oxide compound, acidic aluminum sol, organic extrusion aid , organic porogen and 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 metal oxide catalyst comprising a metal oxide of group VB and a metal oxide of group IIIA; 3) impregnating the metal oxide catalyst obtained in step 2) with a group IB metal salt solution and a rare earth metal salt solution, and then drying and roasting, A composite metal oxide catalyst comprising VB group metal oxides, IB group metal oxides, rare earth metal oxides and IIIA group metal oxides is obtained.

[0019] In the preparation method, the VB metal salt or oxide is a metal ...

Embodiment 1

[0043] With 317.82 grams of aluminum hydroxide powder (72.2 mass % of aluminum oxide content, produced by Shandong Zibo Taiguang Chemical Co., Ltd.), 16.85 grams of ammonium metavanadate (analytical reagent), 7.50 grams of Sesame powder (produced by Henan Lankao Vegetable Gum Factory) , 378.72 grams of aluminum oxide content is 22.4 mass % aluminum sol (Hunan Jianchang Petrochemical Co., Ltd. production), 15.00 grams of octylphenol polyoxyethylene (15) ether (OP-15, Hebei Xingtai Kewang Chemical Auxiliary Co., Ltd. Produced by the company) and 60.36 grams of deionized water are fully kneaded in a multifunctional catalyst molding machine (produced by the General Factory of Science and Technology Industry of South China University of Technology) to obtain a wet plastic body, and then extruded into a solid cylindrical strip of φ1.2mm. After drying at ~30°C for 21 hours, put it into a drying oven and dry at 50°C for 4 hours, then put it into a box-type resistance furnace, heat it f...

Embodiment 2

[0049] Adopt and embodiment 1 same method to prepare composite metal oxide catalyst and carry out the catalytic decomposition of hydrogen peroxide, difference is: have 50.00 gram aqueous solution that is dissolved with 6.376 gram copper nitrate trihydrate and 5.714 gram lanthanum nitrate hexahydrate at 25 Impregnate 30.00 g of cylindrical bar catalysts containing 3.96% by mass of vanadium pentoxide and 96.04% by mass of aluminum oxide at ~30°C for 36 hours, then dry the impregnated matter at 105°C for 12 hours, and then dry the dry matter at 650°C Roasting 20 hours, after natural cooling, obtain the cylindrical bar composite metal oxide catalyst that comprises 3.47 mass % vanadium pentoxide, 6.13 mass % copper oxide, 6.28 mass % lanthanum trioxide and 84.12 mass % aluminum oxide, the hydrogen peroxide of catalyzer The decomposition results are shown in Table 2.

[0050] Table 2

[0051] Reaction time / h

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Abstract

A catalyst for decomposing hydrogen peroxide is characterized by containing, by mass, group-VB metal oxide 1-20%, group-IB metal oxide 1-20%, rare earth metal oxide 0.1-10% and group-IIIA metal oxide 50-97.9%. By the adoption of the catalyst and a decomposition method, most of residual hydrogen peroxide of an epoxidation reaction product of 3-epoxidation and hydrogen peroxide is decomposed before distillation separation, the potential hazards of higher hydrogen peroxide content in the epoxidation reaction product in the follow-up distillation separation process are effectively eliminated, and the safety in epoxy chloropropane production through epoxidation reaction of 3-epoxidation and hydrogen peroxide is improved.

Description

technical field [0001] The invention relates to a catalyst for decomposing hydrogen peroxide and a method for decomposing hydrogen peroxide in 3-chloropropene epoxidation reaction products by the catalyst. 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 conversion ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/847C07D301/12C01B5/00C01B13/02
Inventor 张永强刘易杜泽学
Owner CHINA PETROLEUM & CHEM CORP
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