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Ethylene sulfate preparation method and catalyst thereof

A vinyl sulfate and catalyst technology, applied in the direction of heterogeneous catalyst chemical elements, physical/chemical process catalysts, catalytic reactions, etc., can solve the problems of difficult purification of final products, high content of chloride ions, and many wastes, and achieve atomic utilization High efficiency, simple process route, less waste

Inactive Publication Date: 2017-06-13
盐城利庞新型材料科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Utilizing this process to produce vinyl sulfate will lead to more three wastes, and the final product is difficult to purify, and the chloride ion content is higher (CN 102241662A)

Method used

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  • Ethylene sulfate preparation method and catalyst thereof
  • Ethylene sulfate preparation method and catalyst thereof
  • Ethylene sulfate preparation method and catalyst thereof

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preparation example Construction

[0022] The invention discloses a preparation method of vinyl sulfate. Under the catalytic action of a catalyst, sulfur trioxide and ethylene oxide are used as reaction raw materials to react to generate vinyl sulfate in a solvent environment. Catalysts include main catalysts and auxiliary catalysts. The main catalyst is 0.1-5% of the mass of ethylene oxide. The reaction temperature of sulfur trioxide and ethylene oxide is 30-100° C.; the reaction pressure is 0.1-10.0 MPa. More preferably, the reaction temperature of sulfur trioxide and ethylene oxide is 50-80° C.; the reaction pressure is 3-5 MPa. The solvent may preferably be selected from one or a mixed solvent of dichloromethane, dichloroethane, carbon tetrachloride, chlorobenzene, cyclohexane, n-hexane, acetonitrile, and ethyl acetate. The dosage of the main catalyst is 1-3% of the mass of ethylene oxide. The weight ratio of the main catalyst to the auxiliary catalyst is 0.1-10.

[0023] The catalyst added in the chemi...

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Abstract

The invention discloses a process for preparing ethylene sulfate from sulfur trioxide and ethylene oxide and catalyst preparation and mainly solves problems of high quantity of waste gas, waste water and industrial residues and difficulty in product purification of an existing process route. Catalysts include a main catalyst and an auxiliary catalyst; the main catalyst is metal mixed oxide MaOb / NcOd, wherein M is selected from at least one of Cu, Mg, Zn, Ca, Co or Ni, and N is selected from at least one of Al, Fe, Cr or Zr; the auxiliary catalyst is quaternary ammonium salt R1R2R3R4N+X.

Description

technical field [0001] The present invention relates to main catalyst is M a o b and N c o d metal mixed oxides. Background technique [0002] With the continuous expansion of the use of lithium-ion batteries, the technology of lithium-ion batteries is also improving. Adding some additives to the electrolyte as the "blood" of lithium-ion batteries can improve many performances of the battery. Among them, vinyl sulfate is a kind of SEI film-forming additive, which can inhibit the decrease of the initial capacity of the battery, increase the initial discharge capacity, reduce the expansion of the battery after high temperature storage, and improve the charge and discharge performance and cycle times of the battery. [0003] The current method for producing vinyl sulfate is mainly to prepare vinyl sulfite by reacting ethylene glycol and thionyl chloride, and then oxidize vinyl sulfite to obtain vinyl sulfate. Utilizing this process to produce vinyl sulfate will lead to mor...

Claims

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Application Information

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IPC IPC(8): C07D327/10B01J31/28
CPCC07D327/10B01J23/002B01J23/06B01J23/72B01J23/745B01J23/78B01J23/80B01J31/0239B01J31/28B01J2231/49B01J2523/00B01J35/19B01J2523/17B01J2523/27B01J2523/31B01J2523/22B01J2523/842
Inventor 赵经纬焦昌梅孙安乐信勇
Owner 盐城利庞新型材料科技有限公司
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