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Method for synthesizing Al-SBA-15 high-efficiency anthraquinone hydrogenation catalyst carrier from FCC waste catalyst

A hydrogenation catalyst, al-sba-15 technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve excellent catalytic performance, reduce raw material costs, and reduce emissions

Inactive Publication Date: 2018-08-21
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the synthesis of Al-SBA-15 molecular sieves from FCC spent catalysts as supports for anthraquinone hydrogenation catalysts

Method used

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  • Method for synthesizing Al-SBA-15 high-efficiency anthraquinone hydrogenation catalyst carrier from FCC waste catalyst
  • Method for synthesizing Al-SBA-15 high-efficiency anthraquinone hydrogenation catalyst carrier from FCC waste catalyst
  • Method for synthesizing Al-SBA-15 high-efficiency anthraquinone hydrogenation catalyst carrier from FCC waste catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Weigh 3.0g of dried FCC spent catalyst and 3.0g of sodium hydroxide solid into the crucible and stir evenly, then add 1.8mL of deionized water and stir evenly, then place the mixture in a muffle furnace and heat up at 2°C / min Raise the rate from room temperature to 400°C, activate for 2 hours, wait for natural cooling to room temperature, and grind with a mortar to obtain aluminosilicate mixture powder; add 5.0 g of the above powder to 60 mL, 2mol / L hydrochloric acid, and heat Under magnetic stirring for 3 hours, the prehydrolyzed turbid solution was obtained; at the same time, 2.0g of P123 was dissolved in 60mL, 2mol / L hydrochloric acid, and magnetically stirred at 35°C for 3h; then the prehydrolyzed turbid solution was added dropwise to the In the dissolved P123 solution, continue to stir magnetically at 35°C for 24 hours to obtain a light yellow suspension; Water heating at 90°C for 24 hours; then the hydrothermal solution was separated by suction filtration, washed ...

Embodiment 2

[0044] Weigh 3.0g of FCC spent catalyst, 3.6g of sodium hydroxide solid into the crucible and stir evenly, then add 1.8mL of deionized water and stir evenly, then put the mixture in the muffle furnace from room temperature to 2°C / min. Raise to 400°C, activate for 2 hours, wait for natural cooling to room temperature, and grind with a mortar to obtain aluminosilicate mixture powder; Magnetically stirred for 3 hours to obtain the pre-hydrolyzed turbid solution; at the same time, dissolve 2.0g of P123 in 60mL, 2mol / L hydrochloric acid, and magnetically stir at 35°C for 3h; then add the pre-hydrolyzed turbid solution to the dissolved In the P123 solution, continue to stir magnetically at 35°C for 24h to obtain a light yellow suspension; Submerged in water for 24 hours; then the hydrothermal solution was separated by suction filtration, washed with deionized water until neutral, and then the neutral filter cake was dried at 60°C for 10 hours, and finally the dried filter cake was p...

Embodiment 3

[0048] Weigh 4.0g of FCC spent catalyst and 3.2g of sodium hydroxide solid in sequence, add them into the crucible and stir evenly, then add 1.8mL of deionized water and stir evenly, then place the mixture in a muffle furnace at a heating rate of 2°C / min Raise from room temperature to 500°C, activate for 2 hours, wait for natural cooling to room temperature, and grind with a mortar to obtain aluminosilicate mixture powder; at room temperature, add 5.0g of the above powder to 60mL, 2mol / L hydrochloric acid, and Stir magnetically at 25°C for 3 hours to obtain the prehydrolyzed turbid solution; at the same time, dissolve 2.0g of P123 in 60mL, 1mol / L hydrochloric acid, and stir magnetically at 35°C for 3h; then prehydrolyzed turbidly 2-3 drops per second Add it to the dissolved P123 solution, and continue magnetic stirring at 35°C for 24 hours to obtain a light yellow suspension; then transfer the obtained light yellow suspension to two 100mL polytetrafluoroethylene-lined hydrother...

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Abstract

The invention relates to a method for synthesizing an Al-SBA-15 high-efficiency anthraquinone hydrogenation catalyst carrier from an FCC waste catalyst. Main steps are as follows: (1) pretreating theFCC waste catalyst: the FCC waste catalyst is subjected to alkali fusion activation treatment firstly, and then subjected to strong acidpre-hydrolysis to obtain a mixed solution of aluminosilicate; (2) slowly adding the obtained turbid liquid to the dilute hydrochloric acid solution of P123, continuing to hydrolyze the liquid, and obtaining an Al-SBA-15molecular sieve with ordered mesoporous through hydrothermal treatment, filtering, washing, drying and roasting; (3) preparing 0.3% Pd / Al-SBA-15 by loading the sample at a theoretical loading capability of 0.3% Pd. The method provided by the invention is simple in operation; the specific surface area of the synthesized Al-SBA-15 molecular sieve is 696-831 m<2> / g, the pore volume is 0.77-1.21 cm<3> / g, the average pore diameter is 5.6-7.7 nm,and the pore diameters mainly ranges from 8.7 to 9.0 nm; the loaded Pd is used as the ruthenium hydrogenation catalyst, and the hydrogenation efficiency can reach 9.5g H2O2 in per liter of working solution.

Description

technical field [0001] The invention relates to a preparation method for high-efficiency anthraquinone hydrogenation Pd / Al-SBA-15 catalyst carrier, in particular to a preparation method for synthesizing Al-SBA-15 molecular sieve by using waste FCC catalyst as a silicon-aluminum source. Background technique [0002] Fluid Catalytic Cracking (FCC) catalysts are currently widely used catalysts in petrochemical industry, but with the extension of their use time, they will dealuminate under high-temperature water vapor, resulting in structural collapse, and heavy metals in petroleum (Ni , V, Fe) will enter into the pores of the FCC catalyst to cause poisoning, accompanied by coking, which will lead to a decrease in its activity and selectivity, and will be unloaded as a spent catalyst after repeated use. This makes the way it is handled an important security issue. [0003] At present, the main treatment method of spent FCC catalysts is landfill, but with the emphasis on environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03C01B15/023
CPCB01J29/0308C01B15/023
Inventor 蔡卫权杨志超仇家凯陈俊武汝绪阳熊梓航夏庆蔡智君
Owner WUHAN UNIV OF TECH