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

SAPO molecular sieve catalyst for chloromethane conversion to produce low carbon olefin

A technology of low-carbon olefins and catalysts, applied in the application field of the above-mentioned catalysts

Inactive Publication Date: 2007-05-23
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no patents and literature reports on the conversion of chloromethane catalyzed by silicon phosphorus aluminum series molecular sieves

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

[0011] Carry out the conversion reaction of methyl chloride on the fixed-bed reactor, take the SAPO-34 molecular sieve that silicon content is 10.3wt% as catalyst, reaction conditions: temperature 450 ℃, feed space velocity of methyl chloride 3.2, adopt online gas chromatography to complete product distribution According to the analysis, the conversion rate of methyl chloride is 85%, the selectivity of ethylene in the reaction product is 41.5%, the selectivity of propylene is 29.0%, and the selectivity of butene is 9.1%.

Embodiment 2

[0013] Carry out the conversion reaction of methyl chloride on the fixed-bed reactor, be the SAPO-34 of 6.6wt% with silicon content as catalyzer, reaction condition is the same as embodiment 1, adopt online gas chromatography to complete product distribution analysis, the conversion rate of methyl chloride 50.4% , The selectivity of ethylene in the reaction product is 39.5%, the selectivity of propylene is 30.6%, and the selectivity of butene is 11.0%.

Embodiment 3

[0015] Carry out the conversion reaction of methyl chloride on the fixed-bed reactor, be 8.5wt% SAPO-34 with silicon content as catalyst, reaction condition is the same as embodiment 1, adopt online gas chromatography to complete product distribution analysis, the conversion rate of methyl chloride is 77.8% , The selectivity of ethylene in the reaction product is 40.9%, the selectivity of propylene is 29.5%, and the selectivity of butene is 11.8%.

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
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a catalyst used to catalyze chloromethane to product low-carbon olefin, wherein said catalyst is the SAPO molecule screen whose diameter is 0.3-0.8nanometer, and silicon content is 4.0-15.0wt%.

Description

technical field [0001] The present invention relates to SAPO molecular sieve catalysts. [0002] The invention also relates to the use of the catalysts described above. Background technique [0003] Some work in the 1980s found that the preparation of methyl chloride from natural gas, and the preparation of hydrocarbons from methyl chloride is also an effective way to utilize natural gas. In 1985, Olah published a three-step process for the preparation of methyl chloride from methane, the conversion of methyl chloride to methanol, and the preparation of hydrocarbons from methanol (J.Am.Chem.Soc.107(1985)7097). In 1988, Taylor and Noceti's patent USP 4 769 504 published a cyclic two-step process whereby, after the conversion of methane into methyl chloride, the methyl chloride could be directly produced into hydrocarbons. In the research work on the conversion of methyl chloride, a key step in this process, in patent WO 85 / 02608 and USP 4 652 688, Brophy used metal-supporte...

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): B01J29/85C07C1/26
Inventor 魏迎旭张大治刘中民许磊常福祥杜爱萍
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com