Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of catalyst for preparing methyl glycolate and its preparation method and application

A methyl glycolate and catalyst technology, which is applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of easy deactivation of active sites, fast deactivation rate, and high cost, and achieve product quality Excellent, zero emission and low energy consumption

Active Publication Date: 2021-08-17
SHAANXI YANCHANG PETROLEUM GRP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of the above processes use noble metal catalyst silver, which has high cost. At the same time, due to the easy deactivation of active sites of silver in a reducing environment, there are problems such as short life and too fast deactivation rate.

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A catalyst for preparing methyl glycolate, comprising a main catalyst, a cocatalyst and a carrier, characterized in that: according to 100 parts by weight, the main catalyst includes 20 parts of bismuth oxide, 5 parts of tin oxide, and 8 parts of antimony oxide The co-catalyst includes 1 part of chromium oxide, 2 parts of neodymium oxide, and the rest is carrier ZSM-5 molecular sieve, and the catalyst number is marked as YCSY-01.

[0018] The preparation method of the catalyst: After immersing the carrier with 1mol / L sodium hydroxide solution for 24h to activate, the carrier is washed with deionized water to neutrality, and configured according to the component ratio of the main catalyst into a metal with a total mass fraction of 5%. Sulphate or chloride salt solution to obtain the main catalyst solution; according to the component ratio of the co-catalyst, it is configured into a metal sulfate or chloride solution with a total mass fraction of 10% to obtain a co-catalys...

Embodiment 2

[0020] A catalyst for preparing methyl glycolate, comprising a main catalyst, a cocatalyst and a carrier, characterized in that: according to 100 parts by weight, the main catalyst includes 15 parts of bismuth oxide, 10 parts of tin oxide, and 8 parts of antimony oxide The co-catalyst includes 2 parts of chromium oxide, 1 part of neodymium oxide, and the rest is carrier ZSM-5 molecular sieve, and the catalyst number is marked as YCSY-02.

[0021] The preparation method of described catalyst is with embodiment 1.

Embodiment 3

[0023] A catalyst for preparing methyl glycolate, comprising a main catalyst, a cocatalyst and a carrier, characterized in that: according to 100 parts by weight, the main catalyst includes 18 parts of bismuth oxide, 2 parts of tin oxide, 6 parts of antimony oxide The co-catalyst includes 3 parts of chromium oxide, 1 part of neodymium oxide, and the rest is carrier ZSM-8 molecular sieve, and the catalyst number is marked as YCSY-03.

[0024] The preparation method of described catalyst is with embodiment 1.

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a catalyst for preparing methyl glycolate, comprising a main catalyst, a cocatalyst and a carrier, and the main catalyst includes 1-20 parts of bismuth oxide, 1-10 parts of tin oxide, and 100 parts by weight. 2-10 parts of antimony oxide, the promoter includes 1-5 parts of chromium oxide, 1-2 parts of neodymium oxide, and the rest are carriers. At the same time, the invention also discloses the preparation method of the catalyst and its application in the selective hydrogenation of dimethyl oxalate to prepare methyl glycolate. The catalyst provided by the invention has the advantages of reduced production cost, environmental protection, high raw material conversion rate and high product selectivity when preparing methyl glycolate.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a catalyst for preparing methyl glycolate, a preparation method and application thereof. Background technique [0002] Glycolic acid is a colorless transparent liquid or colorless crystal, soluble in water, methanol, ethanol, acetone, acetic acid and ether. Glycolic acid is mainly used as a cleaning agent, and can be used to prepare fiber dyes, detergents, ingredients for welding agents, varnish ingredients, copper corrosion agents, adhesives, petroleum demulsifiers and metal chelating agents, etc.; sodium salts of glycolic acid, potassium Salt is used as a plating bath additive. Other uses include electrolytic grinding, metal pickling, leather dyeing and tanning agents, etc. It can also be used as a chemical analysis reagent. Glycolic acid is a synthetic monomer of polyglycolic acid, a degradable polymer material. It is expected to replace PET and PDT in large-s...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/48B01J29/84B01J23/31C07C67/31C07C69/675
CPCB01J23/31B01J29/48B01J29/84C07C67/31C07C69/675
Inventor 杨东元王军峰扈广法孙育滨张玉娟
Owner SHAANXI YANCHANG PETROLEUM GRP