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Preparation method of tungsten containing mesopore silicon dioxide molecular sieve

A technology of mesoporous silica and molecular sieve, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, molecular sieve characteristics, aluminum phosphate, etc., and can solve the problems that the preparation method has not been reported.

Inactive Publication Date: 2006-03-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] There is no report on the preparation method of directly introducing W into the framework of HMS mesoporous molecular sieves in the synthesis, and there is no report on the use of WHMS-containing mesoporous molecular sieves as catalysts for olefin disproportionation reactions.

Method used

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  • Preparation method of tungsten containing mesopore silicon dioxide molecular sieve
  • Preparation method of tungsten containing mesopore silicon dioxide molecular sieve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] WO X / Synthesis of HMS

[0028] Weigh 25 grams of dodecylamine (DDA) and place it in a beaker, add 150 milliliters of absolute ethanol and 1300 milliliters of ionized water, and stir at room temperature to completely dissolve dodecylamine to form solution A.

[0029] Take another beaker, weigh 104 grams of tetraethyl orthosilicate (TEOS), add dropwise a solution made of 2.8 grams of ammonium metatungstate, 50 milliliters of deionized water, and 10 milliliters of hydrogen peroxide at room temperature under strong stirring. After the addition is complete, it is dubbed solution B.

[0030] With stirring at room temperature, add solution B dropwise to solution A. After the dropwise addition, stir at room temperature for 24 hours; centrifuge, wash the solid sample with deionized water three times, dry the sample at 60°C, and record the obtained sample as WHMS- 1.

Embodiment 2

[0032] WO X / Synthesis of HMS

[0033] Weigh 25 grams of dodecylamine (DDA) and place it in a beaker, add 150 milliliters of absolute ethanol and 1300 milliliters of ionized water, and stir at room temperature to completely dissolve dodecylamine to form solution A.

[0034] Take another beaker, weigh 104 grams of tetraethyl orthosilicate (TEOS), add dropwise a solution made of 4.2 grams of ammonium metatungstate, 50 milliliters of deionized water, and 10 milliliters of hydrogen peroxide at room temperature under strong stirring. After the addition is complete, it is dubbed solution B.

[0035] With stirring at room temperature, add solution B dropwise to solution A. After the dropwise addition, stir at room temperature for 24 hours; centrifuge, wash the solid sample with deionized water three times, dry the sample at 60°C, and record the obtained sample as WHMS- 2.

Embodiment 3

[0037] WO X / Synthesis of HMS

[0038] Weigh 25 grams of dodecylamine (DDA) and place it in a beaker, add 150 milliliters of absolute ethanol and 1300 milliliters of ionized water, and stir at room temperature to completely dissolve dodecylamine to form solution A.

[0039] Take another beaker, weigh 104 grams of tetraethyl orthosilicate (TEOS), add dropwise a solution made of 5.6 grams of ammonium metatungstate, 50 milliliters of deionized water, and 10 milliliters of hydrogen peroxide at room temperature under strong stirring. After the addition is complete, it is dubbed solution B.

[0040] With stirring at room temperature, add solution B dropwise to solution A. After the dropwise addition, stir at room temperature for 24 hours; centrifuge, wash the solid sample with deionized water three times, dry the sample at 60°C, and record the obtained sample as WHMS- 3.

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Abstract

A process for preparing the W-contained mesoporous HMS molecular sieve of SiO2 used to prepare the catalyst for disproportion ation reaction of butene features that the laurylamine, ethyl silicate and the compound chosen from ammonium metatungstate, ammonium paratungstate, tungstic acid and WCl6 take part in crystallizing reaction at 20-150 deg.C for 6-240 hr to directly introduce W to HMS mesoporous molecular sieve skeleton.

Description

technical field [0001] The invention relates to a preparation method of a tungsten-containing HMS mesoporous silicon dioxide molecular sieve. Background technique [0002] Mesoporous materials have nano-scale uniform pore structures and huge surface areas, and are good catalyst supports. By introducing active components into mesoporous materials, they can provide active sites required for catalytic reactions and have shape-selective catalytic properties. It is a typical microreactor. [0003] Most mesoporous materials do not have catalytic function or do not show special catalytic function. However, the introduction of active components into mesoporous materials can make them have catalytic activity. The introduction of the transition metal species as the active component of the catalyst can be carried out by impregnation or introduced into the framework. When the active component is introduced into the framework of the mesoporous material, its...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B37/06C01B39/48B01J29/04
Inventor 王仰东陈庆龄谢在库
Owner CHINA PETROLEUM & CHEM CORP