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

Catalyst for directly manufacturing low-carbon olefin through nuclear shell type synthesis gas and preparation method and application

A low-carbon olefin and catalyst technology, which is applied in the application field of low-carbon olefin synthesis, can solve problems such as catalyst differences, and achieve the effects of short crystallization time, large pore volume, and adjustable shell thickness

Active Publication Date: 2015-09-09
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
View PDF9 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because different molecular sieve supports have different surface acidity and alkalinity and pore structure, the prepared catalysts have great differences in the direct production of light olefins from syngas

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 directly manufacturing low-carbon olefin through nuclear shell type synthesis gas and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 300ml 10wt%Co(NO 3 ) 3 ·6H 2 O and 200ml 10wt% Mn(NO 3 ) 2 The solution was mixed, and then added ruthenium chloride to make the content 0.05wt%, and then it was mixed with 500ml NH 3 ·H 2 O (25-28wt%) solution is co-precipitated in parallel, and the precipitate is aged, washed and filtered to obtain a mixture of Co and Mn.

[0023] With tetrapropyl ammonium hydroxide TPAOH as structure directing agent, the molar ratio of sol is 1.0TEOS:0.25TPAOH:0.025((CH 3 ) 2 CHO) 3 Al:50H 2 O:2EtOH. These substances were sequentially added to a stainless steel reaction kettle lined with polytetrafluoroethylene, and stirred at 60°C and 10 rpm for 2 hours until a bright yellow uniform sol was formed to obtain 150ml sol. Then add Co and Mn mixture precipitates into the sol, stir evenly, and crystallize at 120°C and 10rpm for 10h. After natural cooling, wash the filtrate repeatedly with deionized water until the pH value is 7.9, dry at 60°C for 12 hours, and roast at 450°C fo...

Embodiment 2

[0026] 500ml 10wt%Co(NO 3 ) 3 ·6H 2O and 300ml 50wt% Mn(NO 3 ) 2 The solution is mixed, and then a certain amount of lanthanum nitrate is added to make the content 2wt%, and then it is mixed with the mixed solution with an equal volume of NH 3 ·H 2 O (25-28wt%) solution is co-precipitated in parallel, and the precipitate is aged, washed and filtered to obtain a mixture of Co and Mn.

[0027] With tetrapropyl ammonium hydroxide TPAOH as the structure-directing agent, the molar ratio of the sol is 3TEOS:0.5TPAOH:0.06((CH 3 ) 2 CHO) 3 Al:80H 2 O:5EtOH. These substances were sequentially added to a stainless steel reaction kettle lined with polytetrafluoroethylene, stirred at 80°C and 20 rpm for 4 hours until a bright yellow uniform sol was formed, and 200ml of sol was obtained. Add the precipitated Co and Mn mixture into the sol, stir evenly, and crystallize at 180°C and 30rpm for 20h. After natural cooling, wash the filtrate repeatedly with deionized water until the p...

Embodiment 3

[0030] 350ml 15wt%Co(NO 3 ) 3 ·6H 2 O and 300ml 50wt% Mn(NO 3 ) 2 The solution was mixed, and then a certain amount of chloroplatinic acid was added to make the content 0.5wt%, and then it was mixed with the mixed solution with an equal volume of NH 3 ·H 2 O (25-28wt%) solution is co-precipitated in parallel, and the precipitate is aged, washed and filtered to obtain a mixture of Co and Mn.

[0031] With tetrapropyl ammonium hydroxide TPAOH as structure directing agent, the molar ratio of sol is 1.5TEOS:0.3TPAOH:0.03((CH 3 ) 2 CHO) 3 Al:50H 2 O:2EtOH. These substances were sequentially added to a stainless steel reaction kettle lined with polytetrafluoroethylene, stirred at 60°C and 15 rpm for 2 hours until a bright yellow uniform sol was formed, and 150ml of sol was obtained. Add the precipitated Co and Mn mixture into the sol, stir evenly, and crystallize at 120°C and 15rpm for 12h. After natural cooling, wash the filtrate repeatedly with deionized water until the...

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 discloses a catalyst for directly manufacturing low-carbon olefin through nuclear shell type synthesis gas. The catalyst is prepared from active components, auxiliaries and a carrier in weight percent as follows: 2.0-20% of cobalt oxide, 2.5-20% of manganese oxide, 0.05-2.0% of metal additive oxide, and 58-95% of carrier. The catalyst disclosed by the invention is high in selectivity, and capable of greatly reducing the CO2 selectivity.

Description

technical field [0001] The invention belongs to a catalyst and its preparation method and application, in particular to a catalyst for direct production of low-carbon olefins from core-shell synthesis gas, its preparation method and its application in the synthesis of low-carbon olefins. technical background [0002] Low-carbon olefins (ethylene, propylene and butene) are important petrochemical basic raw materials, and their applications are extremely wide. The main uses are as follows: ethylene is mainly used for synthetic rubber, synthetic resins (such as polystyrene, polyvinyl chloride), Fiber, ethylene oxide, explosives, ethanol, acetaldehyde, acetic acid and other organic synthesis products, and can replace acetylene to cut and weld metal, and can also be used as a fruit ripening agent. Currently, it is mainly used for synthetic resins and plastics. Propylene is mainly used to produce polypropylene (PP), acrylonitrile (AN), propylene oxide (PO), acetone, butanol, octan...

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
IPC IPC(8): B01J29/00B01J29/076C10G2/00C07C1/04C07C11/02
Inventor 李德宝王俊刚侯博贾丽涛刘岩
Owner SHANXI INST OF COAL CHEM 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