Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Catalyst for producing methyl acetate as well as preparation method and application of catalyst

A technology of methyl acetate and catalyst, applied in the direction of carbon monoxide or formate reaction preparation, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as easy deactivation, reduce maintenance costs, reduce investment, and reduce catalyst consumption Effect

Active Publication Date: 2017-06-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned patents disclose a large number of research results on the carbonylation of dimethyl ether, and the catalyst has been running stably for less than 100 hours, and is easily deactivated

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst for producing methyl acetate as well as preparation method and application of catalyst
  • Catalyst for producing methyl acetate as well as preparation method and application of catalyst
  • Catalyst for producing methyl acetate as well as preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The preparation of embodiment 1 hydrogen type EMT zeolite molecular sieve

[0045] According to the method in the document Synthesis of silica-rich faujasite using crown-ethers astemplates: F.Delprato et, ZEOLITES, 1990, VO1 10:546, an EMT molecular sieve with a silicon-aluminum ratio of 4.2 was prepared.

[0046] The EMT molecular sieve was exchanged three times (2 hours / time) with 0.5mol / L ammonium nitrate, washed with deionized water, dried, and calcined at 550°C for 4 hours to obtain a hydrogen-type EMT zeolite molecular sieve, which was designated as sample 1 # .

Embodiment 2 4

[0047] Example 2 Preparation of Silicon Tetrachloride Vapor Dealuminated EMT Zeolite Molecular Sieve

[0048] Weigh 1 g of hydrogen-type EMT zeolite molecular sieve, fix both ends in a quartz tube with quartz wool, and let 273K saturated silicon tetrachloride vapor carried by nitrogen gas into it. The obtained solid sample is washed with deionized water, separated by filtration, dried and calcined to obtain a catalyst for carbonylation of dimethyl ether to produce methyl acetate. The relationship between the temperature and time of silicon tetrachloride vapor treatment, the temperature and time of solid sample drying and roasting, and the sample number is shown in Table 1.

[0049] Table 1

[0050]

Embodiment 3 4

[0051] Example 3 Preparation of Silicon Tetrachloride Vapor Dealuminated EMT Zeolite Molecular Sieve (Using Pore Expander)

[0052] 1.00g sample 6 # Add a pore-enlarging agent, and then filter, wash, dry, and roast to make 2 catalyst samples. Table 2 shows the relationship between the pore-enlarging agent used, the treatment temperature and time, the mesopore specific surface area and volume of the obtained sample, and the sample number.

[0053] Table 2

[0054]

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

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a catalyst for producing methyl acetate through carbonylation of dimethyl ether. The catalyst is characterized by containing hydrogen type EMT molecular sieve which is subjected to silicon tetrachloride stream dealumination. By utilizing the EMT molecular sieve which is subjected to silicon tetrachloride stream dealumination as an active component, the methyl acetate selectivity and stability of the catalyst can be substantially improved.

Description

technical field [0001] The application relates to a catalyst for producing methyl acetate by carbonylation of dimethyl ether, its preparation method and application, and belongs to the field of chemical engineering. Background technique [0002] With the rapid development of modern industry, the contradiction between energy supply and demand has become increasingly prominent. my country, as a big energy consumer and a big energy shortage country, urgently needs to find alternative energy sources. As a clean energy source, ethanol has good miscibility and can be added to gasoline as a blending component to partially replace gasoline, increase the octane number and oxygen content of gasoline, effectively promote the complete combustion of gasoline, and reduce Carbon monoxide and hydrocarbon emissions in vehicle exhaust. As a partial substitute of vehicle fuel, ethanol can make my country's vehicle fuel present a diversified structural feature. At present, my country mainly ...

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 Applications(China)
IPC IPC(8): B01J29/70C07C69/14C07C67/37
CPCB01J29/7019B01J2229/16C07C67/37C07C69/14
Inventor 刘红超朱文良刘勇倪友明刘中民王林英田鹏
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com