Preparation method of lithium-loaded silica gel catalyst

A catalyst and silica gel technology, applied in the field of preparation of lithium-supported silica gel catalysts, can solve the problems of low catalytic efficiency of lithium catalysts and harsh catalytic conditions, and achieve the effects of being beneficial to industrial production, mild catalytic conditions and high catalytic efficiency

Inactive Publication Date: 2014-12-10
PURESCI ENVIRONMENTAL TECH CO LTD
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: The purpose of the present invention is to provide a practical lithium-loaded silica gel catalyst to solve the problems of low catalytic efficiency and harsh catalytic conditions of lithium catalysts in current industrial production

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

[0017] Materials: Lithium chloride powder 10g, silicic acid hydrosol 1000g, polyacrylamide 3g, 0.5mol / L hydrochloric acid solution, 0.5mol / L ammonia solution.

[0018] Preparation method: (1) Dissolve 1000g silicic acid hydrosol in 0.5mol / L dilute hydrochloric acid, and stir for 10min;

[0019] (2) Dissolving 10 g of lithium chloride powder in the mixed system obtained in step (1), adjusting the pH to 3.5 with 0.5 mol / L aqueous hydrochloric acid and 0.5 mol / L ammonia solution;

[0020] (3) Add 3 g of polyacrylamide to the mixed system obtained in step (2) and stir until the sol is completely gelled;

[0021] (4) The gel obtained in step (3) was washed with deionized water, dried and then calcined at 500° C. for 3 hours to obtain a lithium-loaded silica gel catalyst.

Embodiment 2

[0023] Materials: Lithium chloride powder 10g, silicic acid hydrosol 850g, polyacrylamide 1.7g, 0.3mol / L hydrochloric acid aqueous solution, 0.5mol / L hydrochloric acid aqueous solution, 0.5mol / L ammonia aqueous solution.

[0024] Preparation method: (1) Dissolve 850g silicic acid hydrosol in 0.3mol / L dilute hydrochloric acid, and stir for 20min;

[0025] (2) Dissolving 10 g of lithium chloride powder in the mixed system obtained in step (1), adjusting the pH to 3 with 0.5 mol / L aqueous hydrochloric acid and 0.5 mol / L ammonia solution;

[0026] (3) Add 1.7 g of polyacrylamide to the mixed system obtained in step (2) and stir until the sol is completely gelled;

[0027] (4) The gel obtained in step (3) was washed with deionized water, dried and then calcined at 500° C. for 2 hours to obtain a lithium-loaded silica gel catalyst.

Embodiment 3

[0029] Materials: Lithium chloride powder 10g, silicic acid hydrosol 2000g, polyacrylamide 10g, 1mol / L hydrochloric acid aqueous solution, 0.5mol / L hydrochloric acid aqueous solution, 0.5mol / L ammonia aqueous solution.

[0030] Preparation method: (1) Dissolve 2000g silicic acid hydrosol in 1mol / L dilute hydrochloric acid, and stir for 10min;

[0031] (2) Dissolving 10 g of lithium chloride powder in the mixed system obtained in step (1), adjusting the pH to 4 with 0.5 mol / L hydrochloric acid aqueous solution and 0.5 mol / L ammonia solution;

[0032] (3) Add 10 g of polyacrylamide to the mixed system obtained in step (2) and stir until the sol is completely gelled;

[0033] (4) The gel obtained in step (3) was washed with deionized water, dried and then calcined at 400° C. for 4 hours to obtain a lithium-loaded silica gel 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

No PUM Login to view more

Abstract

The invention discloses a preparation method of a lithium-loaded silica gel catalyst. The lithium-loaded silica gel catalyst is prepared from silicic acid hydrosol and lithium chloride powder in a gelling manner. According to the preparation method of the lithium-loaded silica gel catalyst, lithium with catalytic action is dispersed and fixed to a silica gel carrier. Compared with the prior art, the method disclosed by the invention has the advantages that the catalytic efficiency is higher, the required catalytic conditions are milder, and the industrial production is facilitated.

Description

technical field [0001] The invention belongs to the field of metal catalysts, and in particular relates to a preparation method of a lithium-loaded silica gel catalyst. Background technique [0002] Low-carbon olefins such as ethylene and propylene are the most basic raw materials in the petrochemical industry. Taking ethylene as an example, about 75% of petrochemical products are produced from ethylene, which is mainly used to produce polyethylene, polyvinyl chloride, ethylene oxide / ethylene glycol, dichloroethane, styrene, polystyrene, Ethanol, vinyl acetate and other important organic chemical products, in fact, ethylene production has become a symbol to measure the development level of a country's petrochemical industry. [0003] Statistics show that from 1990 to 2003, my country's ethylene equivalent consumption increased by an average of 12% per year, and the growth rate thereafter was even more astonishing. In 2003, my country's ethylene equivalent consumption was 13...

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): B01J23/04
Inventor 贾东新焦德华何玲丽
Owner PURESCI ENVIRONMENTAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap