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Precious metal based aluminosilicate catalyst with high specific surface area and preparation method thereof

A high specific surface area, based aluminosilicate technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve complex methods and cannot be prepared on a large scale and other problems, to achieve the effect of simple operation process, improved circulation and diffusion performance, and mild experimental synthesis conditions

Active Publication Date: 2018-10-09
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the material has good channel properties, the method is too complicated to be prepared on a large scale

Method used

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  • Precious metal based aluminosilicate catalyst with high specific surface area and preparation method thereof
  • Precious metal based aluminosilicate catalyst with high specific surface area and preparation method thereof
  • Precious metal based aluminosilicate catalyst with high specific surface area and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] This embodiment provides a method for preparing a high specific surface area noble metal-based aluminosilicate catalyst, which includes the following steps:

[0049] Take 17mL of acetonitrile solution with a mass fraction of 99.5%, add 3mL of deionized water, mix evenly and set aside.

[0050] 2g of aluminum sec-butoxide solution (97wt%) was evenly added dropwise into the aqueous acetonitrile solution, and it was found that a white precipitate was formed immediately, stirred at a constant speed for 30min, then left to stand for 2h, and then 0.2g of tetramethoxyl with a mass fraction of 98% was added dropwise at a constant speed. base silane, stirred at a constant speed with a glass rod for 30 minutes, and then stood still for 2 minutes. The product was subjected to suction filtration, and the product obtained by suction filtration was dried in an oven at 60°C, and left to stand for 12 hours to obtain a white powder.

[0051] 1g H 2 PtCl 6 ·6H 2 O powder was dissolved...

Embodiment 2

[0058] This embodiment provides a method for preparing a high specific surface area noble metal-based aluminosilicate catalyst, which includes the following steps:

[0059] Take 17mL of acetonitrile solution with a mass fraction of 99.5%, add 3mL of deionized water, mix evenly and set aside.

[0060] 2g of aluminum sec-butoxide solution (97wt%) was evenly added dropwise into the aqueous acetonitrile solution, and it was found that a white precipitate was formed immediately. After stirring at a constant speed for 30 minutes, it was allowed to stand for 2 hours, and then 0.3g of tetramethoxymethylene oxide with a mass fraction of 98% was added dropwise at a constant speed. base silane, stirred at a constant speed with a glass rod for 30 minutes, and then stood still for 2 minutes. The product was subjected to suction filtration, and the product obtained by suction filtration was dried in an oven at 60°C, and left to stand for 12 hours to obtain a white powder.

[0061] 1g H 2 P...

Embodiment 3

[0063] This embodiment provides a method for preparing a high specific surface area noble metal-based aluminosilicate catalyst, which includes the following steps:

[0064] Take 17mL of acetonitrile solution with a mass fraction of 99.5%, add 3mL of deionized water, mix evenly and set aside.

[0065] 2g of aluminum tert-butoxide (97wt%) was evenly added dropwise into an aqueous solution of acetonitrile, and a white precipitate was found to be formed immediately, stirred at a constant speed for 30min, then left to stand for 2h, and then 0.1g of tetramethoxyl with a mass fraction of 98% was added dropwise at a uniform speed. Silane, stirred at a constant speed with a glass rod for 30 minutes, then stood still for 2 minutes, and the product was subjected to suction filtration, and the product obtained by suction filtration was dried in an oven at 60°C, and stood for 12 hours to obtain a white powder.

[0066] 1g H 2 PtCl 6 ·6H 2 O powder was dissolved in 250 mL H 2 O, stir we...

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Abstract

The invention provides a precious metal based aluminosilicate catalyst with a high specific surface area and a preparation method thereof. The preparation method comprises the following steps: (1) uniformly mixing organic alcohol aluminum with an acetonitrile aqueous solution to be subjected to reaction to obtain liquid; (2) uniformly mixing a silicon source with the liquid obtained in the step (1) to be subjected to reaction to obtain white precipitate I; (3) performing suction filtration, washing and drying on the white precipitate I to obtain white powder II; (4) uniformly mixing the whitepowder II with a precious metal salt solution, allowing the mixture to stand to perform impregnation reaction, and drying the obtained product after the reaction is finished so as to obtain yellow powder III; and (5) under the protective atmosphere, roasting the yellow powder III obtained in the step (4) to obtain the precious metal based aluminosilicate catalyst with a high specific surface area.The prepared catalyst has a three-dimensional mesoporous structure, the mesoporous structure provides a very high specific surface area for the whole catalyst, and the condition that active components can be uniformly distributed on the surface of a carrier is ensured when precious metal active components are loaded.

Description

technical field [0001] The invention relates to a high specific surface area noble metal-based aluminosilicate catalyst and a preparation method thereof, belonging to the technical field of petrochemical industry. Background technique [0002] In the field of modern petrochemical and fine chemical industry, a catalyst with excellent performance is inseparable. About 90% of the chemical products provided by the modern chemical industry are produced by means of catalytic processes, and catalysts are the core of catalytic technology and are crucial to the development of catalytic processes. [0003] As we all know, supported catalysts occupy an irreplaceable important position in the modern petrochemical industry. Aluminosilicate carriers are often used in petrochemical and catalytic industries due to their advantages such as good stability, low price, acidic surface and good thermal stability. The most widely used catalyst or catalyst support. Due to their stable chemical pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/36B01J23/42B01J23/44B01J23/46B01J23/50B01J23/52B01J35/10C10G27/00C10G45/04C10G45/10
CPCC10G27/00C10G45/04C10G45/10B01J23/36B01J23/42B01J23/44B01J23/462B01J23/464B01J23/468B01J23/50B01J23/52C10G2300/202B01J35/63B01J35/615B01J35/633B01J35/647
Inventor 陈丽华刘宏海赵红娟汪建南王久江苏宝连胡清勋武兆东王宝杰滕秋霞孙雪芹杨周侠张莉熊晓云
Owner PETROCHINA CO LTD
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