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

Fischer-Tropsch synthesizing catalyst prepared by carrying cobalt with porous aluminum oxide, preparation method and application

A technology of porous alumina and cobalt loading, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, catalyst carrier, etc. Low content and other problems, to achieve good mass and heat transfer performance, rich pore structure, and improve catalytic activity

Active Publication Date: 2016-06-01
中科潞安能源技术有限公司
View PDF2 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Shell Company uses silica as a carrier, which has poor thermal conductivity and cannot fully exert its catalytic performance in industrial device applications.
Exxon uses titanium oxide as a carrier, but the cobalt loading of the titanium oxide carrier is less than 15%, and the low-temperature calcination strength of the catalyst is low. High-temperature calcination can improve the strength of the catalyst, but it will lead to strong interaction between the metal carrier and affect the performance of the catalyst.
Alumina is a commonly used catalyst carrier in industry. It has a unique pore structure, internal specific surface and strong adsorption capacity. It has also been widely studied in the preparation of Fischer-Tropsch synthesis catalysts. restricted question
Due to the lack of pores on the alumina carrier, the cobalt content of the catalyst is low, and the reaction activity cannot be improved, which ultimately affects the production capacity and industrial application

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

[0018] According to the final catalyst composition, weigh 273.55g of ammonium aluminum carbonate, and prepare it into ammonium aluminum carbonate slurry with a solid content of 18 (wt.)%, then weigh 547.1g of multi-walled carbon nanotubes (8-15nm) as the skeleton. Under ultrasonic vibration, the ammonium aluminum carbonate solution was completely impregnated on the multi-walled carbon nanotubes, and then vacuum-dried at 70°C for 18h to obtain the alumina precursor with a skeleton, which was then calcined in a muffle furnace at 550°C for 8h. Obtain carrier alumina; weigh 75.28g of cobalt nitrate and 5.05g of iron nitrate, impregnate the above-mentioned alumina carrier in equal volume, dry at 60°C for 24h, and roast at 350°C for 4h to obtain the final catalyst. The weight composition of the final catalyst is Co 3 o 4 : Fe 2 o 3 :Al 2 o 3 =25:1:100.

[0019] Take 5ml of the above catalyst without dilution and fill it in a fixed bed reactor (Ф10×500mm). The reduction conditio...

Embodiment 2

[0022] According to the final catalyst composition, 117.65g of pseudo-boehmite was weighed and prepared into a pseudo-boehmite slurry with a solid content of 28 (wt.)%, and then 470.6g of mesoporous carbon (cubic structure) was weighed as the skeleton. Under ultrasonic vibration, the pseudo-boehmite slurry was completely impregnated in mesoporous carbon (cubic structure), and then vacuum-dried at 60°C for 36h to obtain a skeleton-containing alumina precursor, which was then placed in a muffle furnace at 450°C Calcined at low temperature for 12 hours to obtain carrier alumina; Weigh 108.71g of cobalt acetate and 7.78g of nickel nitrate, impregnate the above-mentioned alumina carrier in equal volume, dry at 70°C for 20h, and roast at 300°C for 6h to obtain the final catalyst, the weight of the final catalyst Composed of Co 3 o 4 :NiO:Al 2 o 3 =30:2:100.

[0023] Take 5ml of the above catalyst without dilution and fill it in a fixed bed reactor (Ф10×500mm). The reduction cond...

Embodiment 3

[0026] According to the final catalyst composition, 152.94g of aluminum hydroxide was weighed, prepared into an aluminum hydroxide slurry with a solid content of 10 (wt.)%, and then 382.35g of mesoporous activated carbon (coconut shell) was weighed as the skeleton, and the , the aluminum hydroxide slurry is completely impregnated in the mesoporous activated carbon (coconut shell), and then vacuum-dried at 70°C for 30h to obtain a skeleton-containing alumina precursor, which is then roasted in a muffle furnace at 500°C for 10h to obtain a carrier Alumina: Weigh 108.53g of cobalt nitrate and 9.06g of copper nitrate, impregnate the same volume on the above-mentioned alumina carrier, dry at 80°C for 16h, and roast at 320°C for 5h to obtain the final catalyst. The weight composition of the final catalyst is Co 3 o 4 :CuO:Al 2 o3 =35:3:100.

[0027] Take 5ml of the above catalyst without dilution and fill it in a fixed bed reactor (Ф10×500mm). The reduction conditions are: 390°C, ...

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

A Fischer-Tropsch synthesizing catalyst prepared by carrying cobalt with porous aluminum oxide is prepared from cobaltosic oxide, metal additive oxide and aluminum oxide at the weight ratio of (25-50):(1-10):100.The catalyst has the advantages of being high in activity and stability and capable of being used for Fischer-Tropsch synthesizing reactions with a slurry reactor and a static bed.

Description

technical field [0001] The invention relates to a Fischer-Tropsch synthesis catalyst, its preparation method and its application, in particular to a porous alumina-supported cobalt-based Fischer-Tropsch synthesis catalyst, its preparation method and its application. Background technique [0002] my country's coal-based energy structure has been maintained for a long time, and vigorously develops synthetic oil (CTL) technology that uses coal as raw material to achieve clean coal, optimize deep utilization, and produce ultra-clean liquid engine fuels and advanced lubricants, etc., which can alleviate the world's energy demand and structural conditions contradiction. [0003] Fischer-Tropsch synthetic liquid fuel is nitrogen-free, sulfur-free, and low in aromatic content, and is favored by the market as a clean fuel. At present, countries all over the world have successfully developed synthetic oil technology, the fixed fluidized bed (SAS) and slurry bed (SSPD) process of Sasol...

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): B01J23/75B01J23/755B01J35/10B01J32/00B01J21/04C10G2/00
CPCC10G2/332B01J21/04B01J23/002B01J23/75B01J23/755B01J2523/00B01J35/60B01J2523/31B01J2523/842B01J2523/845B01J2523/847B01J2523/17B01J2523/27
Inventor 李德宝刘岩贾丽涛侯博
Owner 中科潞安能源技术有限公司
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