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

Method for regenerating catalyst by low-temperature oxidation using perchloric acid

A technology for regenerating catalysts and catalysts, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of high energy consumption and unsatisfactory regeneration effect, and achieve the effect of simple operation and reduced energy loss

Active Publication Date: 2011-07-20
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems with this method are high energy consumption and unsatisfactory regeneration effect.

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

[0034] Put 5g of deactivated catalyst in the crucible, add 5g of perchloric acid solution (0.01mol / l), add an iron sheet and put it on the top of the crucible to ensure partial coverage of the crucible, move the crucible to the muffle furnace, and heat up to 100 ℃ constant 2h. The conversion rate of hydrogen peroxide measured in the evaluation experiment was 25.00%.

Embodiment 2

[0036] Put 5g of deactivated catalyst in the crucible, add 10g of perchloric acid solution (0.1mol / l), add an iron sheet and put it on the top of the crucible to ensure partial coverage of the crucible, move the crucible to the muffle furnace, and heat up to 100 ℃ constant 3h. The conversion rate of hydrogen peroxide measured in the evaluation experiment was 30.00%.

Embodiment 3

[0038] Put 5g of deactivated catalyst in the crucible, add 15g of perchloric acid solution (1.0mol / l), add an iron sheet and put it on the top of the crucible to ensure partial coverage of the crucible, move the crucible to the muffle furnace, and heat up to 100 ℃ constant 8h. The evaluation experiment measured that the hydrogen peroxide conversion rate was 35.50%.

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 method for regenerating a catalyst by the lower temperature oxidization of perchloric acid which is characterized in that after a deactivated titanium-silicon molecular sieve catalyst is washed by an organic solvent, the catalyst is filtered, dried and then is arranged into a high temperature resistance container; then perchloric acid solution with the concentration of 0.01 to 1mol / l with a weight ratio of 1 to 3: 1 to the catalyst is added to contact air or oxygen under the temperature between 100 and 300 DEG C for 2 to 8h.

Description

technical field [0001] The invention relates to a regeneration method of a deactivated catalyst, more specifically, the invention relates to a regeneration method of a deactivated titanium-silicon molecular sieve catalyst used in an oxidation reaction. Background technique [0002] In 1983, Italian scientist Taramasso et al. discovered a titanium-silicon molecular sieve with an MFI structure, which exhibited excellent catalytic performance in catalytic oxidation reactions. Since then, titanium-silicon molecular sieves have been widely used in the direct oxidation reaction of hydrogen peroxide and organic matter, such as the ammoximation reaction of aromatics, olefins, alcohols, nitrogen-containing compounds, and carbonyl-containing compounds. However, usually after a period of operation, the catalytic performance of the catalyst will deteriorate, and the catalyst will be deactivated. The cause of catalyst deactivation may be that impurities introduced during the synthesis o...

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): B01J29/90B01J29/89
Inventor 林民王梅正朱斌汝迎春舒兴田
Owner CHINA PETROLEUM & CHEM CORP