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

Synthesis gas conversion catalyst and its preparation method and application

A synthesis gas conversion and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of methane selectivity improvement, activity stability reduction, and complex preparation process, etc., to achieve improved Dispersion and reduction, reduced concentration of hydroxyl groups, simple preparation effects

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of introducing organic groups on the surface of silica gel support is not only complicated in preparation process, high in cost, and not conducive to industrial application, but also due to the steric hindrance of organic groups and their strong interaction with the generated Fischer-Tropsch synthesis products, resulting in Decreased activity stability, increased methane selectivity

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

example 1

[0019] Weigh commercially available silica gel (the pore volume is 1.06ml / g, the specific surface area is 386.81m 2 / g, this silica gel per 10 grams of distilled water is added dropwise to the volume of water consumed when the initial moistening is 16ml, the following examples all use this silica gel) 30g, the pH value is adjusted to 5.5, and the mass concentration of copper ions is 2% copper nitrate The solution is excessively impregnated on the silica gel carrier, the impregnation temperature is 75°C, and the impregnation time is 50h. After impregnation, excess copper nitrate solution is filtered off, dried at 100°C for 20h, and roasted at 400°C for 8h. Based on the final catalyst cobalt content of 5wt%, weigh cobalt nitrate and dissolve it in 48ml of water, add it to the silica gel carrier treated with copper nitrate solution, impregnate it, age for 3 hours, dry at 80°C for 8 hours, and bake at 350°C for 4 hours. The resulting catalyst was designated as C-1.

[0020] Catal...

example 2

[0022] Weigh 30 g of commercially available silica gel, adjust the pH value to 5, and use a copper nitrate solution with a mass concentration of copper ions of 1% to excessively impregnate the silica gel carrier. The impregnation temperature is 60 ° C, and the impregnation time is 10 hours. Remove excess copper nitrate solution, dry at 50°C for 36h, and bake at 300°C for 2h. Based on the final catalyst cobalt content of 15wt%, weigh cobalt nitrate and dissolve it in 48ml of water, add it to the silica gel carrier treated with copper nitrate solution, impregnate it, age for 3 hours, dry at 80°C for 8 hours, and bake at 350°C for 4 hours. The resulting catalyst is designated C-2. The experimental conditions for catalyst activity evaluation are the same as in Example 1. The results of the Fischer-Tropsch synthesis reaction over the C-2 catalyst are shown in Table 1.

example 3

[0024] Weigh 30 g of commercially available silica gel, adjust the pH value to 6, and use a copper sulfate solution with a mass concentration of copper ions of 3% to excessively impregnate the silica gel carrier. The impregnation temperature is 80 ° C, and the impregnation time is 100 hours. Remove excess copper sulfate solution, dry at 150°C for 2h, and bake at 500°C for 15h. Based on the final catalyst cobalt content of 15wt%, weigh cobalt nitrate and dissolve it in 48ml of water, add it to the silica gel carrier treated with copper nitrate solution, impregnate it, age for 3 hours, dry at 80°C for 8 hours, and bake at 350°C for 4 hours. The resulting catalyst was designated C-3. The experimental conditions for catalyst activity evaluation are the same as in Example 1. Table 1 shows the results of the Fischer-Tropsch synthesis reaction over the C-3 catalyst.

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 synthesis gas conversion catalyst. The catalyst uses modified silica gel as a carrier and cobalt as an active component. The weight percentage of cobalt in the catalyst is 5%-35%, wherein the modified silica gel is Silica gel after excessive impregnation with copper-containing aqueous solution with a pH value of 5-6. A method for preparing a synthesis gas conversion catalyst, comprising the following process: using silica gel as a carrier, the silica gel carrier is first surface-modified, and then the active component Co is impregnated by an impregnation method; wherein the surface modification method of the silica gel carrier is to use pH 5-6 copper-containing aqueous solution is excessively impregnated. Application of Syngas Conversion Catalysts in Fischer-Tropsch Synthesis. The synthesis gas conversion catalyst prepared by the method of the invention not only has a simple preparation method, but also has high activity and good stability.

Description

technical field [0001] The invention relates to a synthesis gas conversion catalyst and its preparation method and application, in particular to a synthesis gas conversion catalyst with modified silica gel as a carrier, its preparation method and application. Background technique [0002] Fischer-Tropsch synthesis refers to synthesis gas (CO+H 2 ) on the catalyst to catalyze the reaction of synthesizing hydrocarbon liquid fuel. With the increasing depletion of petroleum resources, the preparation of liquid fuels by Fischer-Tropsch synthesis has attracted more and more attention from all over the world. Catalyst is one of the key technologies of Fischer-Tropsch synthesis reaction. In the research of Fischer-Tropsch catalysts in the past 80 years, it has been found that Fe, Co and Ru are effective active components of Fischer-Tropsch catalysts. Stability plays an important role, and the carrier of the catalyst is generally amorphous SiO 2 、TiO 2 and Al 2 o 3 Mainly. Ho...

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): B01J23/75B01J37/02C10G2/00
Inventor 桂兴华
Owner CHINA PETROLEUM & CHEM CORP
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