A kind of method utilizing ester solvent to process polystyrene sulfonic acid resin catalyst

A polystyrene sulfonic acid and ester solvent technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve the difficulties in the preparation of methyl chloroacetate and sodium methoxide, which are not suitable for large-scale production and other issues to achieve the best reactivity effect
CN105833905BInactive Publication Date: 2018-08-07SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
Publication Date
2018-08-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of utilizing an ester solvent to process a polystyrene sulfonic acid resin catalyst relates to a method for processing a resin catalyst, the method comprising the following steps: adding a polystyrene sulfonic acid resin catalyst to a container containing an ester solvent, Introduce a gas with a pressure of 0.1-20.0 MPa, control the treatment temperature at 35-150°C, and the treatment time at 0.5-20.0 h. The polar organic ester solvent is also used as a water-carrying agent, a pore-enlarging agent and a structural modifier of the sulfonic acid resin. It works; the catalyst is a resin catalyst containing sulfonic acid functional groups, which is one or more mixtures of D-009B, DA-330, NKC-9, D-006, Amberlyst-15, and D-072. The method of the present invention adopts polar organic ester solvent heat treatment polystyrene sulfonic acid resin catalyst, and after the treatment, the sulfonic acid resin catalyst is used for methylal carbonylation reaction, and compared with the sulfonic acid resin catalyst that has not been treated with ester, it shows extremely Excellent reactivity, stability and selectivity to methyl methoxyacetate.
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Description

technical field

[0001] The invention relates to a method for processing resin catalysts, in particular to a method for processing polystyrene sulfonic acid resin catalysts with ester solvents. Background technique

[0002] Methyl methoxyacetate (MMAc) is an important organic chemical raw material, which can be used for the kinetic resolution of chiral amine compounds, the synthesis of vitamin B6 and sulfa-5-pyrimidine, and the catalyst for polymerization reactions; Petroleum route (use cheap and easy-to-obtain methylal as the reaction raw material, synthesize high value-added MMAc through carbonylation reaction) produce the upstream product of ethylene glycol, a bulk chemical raw material, from MMAc (generate ethylene glycol monomethyl ether through hydrogenation reaction , and then generate ethylene glycol through hydrolysis reaction), ethylene glycol is mainly used in polyester fiber, antifreeze, unsaturated polyester resin, lubricant, plasticizer, non-ionic surfactant and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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