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Method for rapidly removing organic templating agent in mesoporous material with solvent extraction method

An organic template agent and mesoporous material technology, applied in chemical instruments and methods, inorganic chemistry, molecular sieve compounds, etc., can solve the problems of long process cycle, cumbersome operation steps, harsh experimental conditions, etc., to shorten the process cycle and simplify the operation. effect of steps

Inactive Publication Date: 2013-05-01
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to propose a method for quickly removing organic templates in mesoporous materials by solvent extraction, so as to overcome the problems of harsh experimental conditions, cumbersome operation steps and long process cycle of existing solvent extraction methods

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  • Method for rapidly removing organic templating agent in mesoporous material with solvent extraction method

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Embodiment 1

[0020] The first step of the implementation process of this embodiment is the same as the first step of the comparative example.

[0021] In the second step, 10 g of MSU was placed in 10 g of hydrochloric acid, acidified for 3 hours, filtered, and placed in a Soxhlet extractor. Add 50g of methanol solvent and 5g of n-hexane additive into the three-neck flask at the bottom of the Soxhlet extractor. After the solvent has been refluxed for 12 hours, stop heating and cool to room temperature. After taking out the white powder of MSU, wash it with deionized water for 3 to 5 The second time, the MSU mesoporous material was obtained after drying at 110°C for 24 hours. The measurement results of its specific surface area, pore volume, and pore diameter are shown in Table 1. The quality results of MSU mesoporous materials before and after removing the template are shown in Table 1.

Embodiment 2

[0023] The first step of the implementation process of this embodiment is the same as the first step of the comparative example.

[0024] In the second step, 10 g of MSU was placed in 20 g of hydrochloric acid, acidified for 6 hours, filtered, and placed in a Soxhlet extractor. Add 70g of ethanol solvent and 8g of n-hexane additive to the three-necked flask at the bottom of the Soxhlet extractor. After the solvent has been refluxed for 18 hours, stop heating and cool to room temperature. After taking out the white MSU powder, wash it with deionized water for 3 to 5 The second time, the MSU mesoporous material was obtained after drying at 110°C for 24 hours. The measurement results of its specific surface area, pore volume, and pore diameter are shown in Table 1. The quality results of MSU mesoporous materials before and after removing the template are shown in Table 1.

Embodiment 3

[0026] The first step of the implementation process of this embodiment is the same as the first step of the comparative example.

[0027] In the second step, 10 g of MSU was placed in 40 g of hydrochloric acid, acidified for 9 hours, filtered, and placed in a Soxhlet extractor. Add 120g of ethanol solvent and 15g of n-octane additive to the three-necked flask at the bottom of the Soxhlet extractor. After the solvent has been refluxed for 24 hours, stop heating and cool to room temperature. After taking out the white powder of MSU, wash it with deionized water for 3~ After drying for 5 times at 110°C for 24 hours, the MSU mesoporous material was obtained. The measurement results of specific surface area, pore volume, and pore diameter are shown in Table 1. The quality results of MSU mesoporous materials before and after removing the template are shown in Table 1.

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Abstract

The invention relates to a method for rapidly removing an organic templating agent in a mesoporous material with a solvent extraction method. According to the invention, a synthesized mesoporous material is acidified and is placed in a Soxhlet extractor; an organic solvent and an auxiliary agent are selected as extractants; and evaporation and refluxing are carried out, such that the templating agent is continuously extracted by the pure hot solvent. With the method provided by the invention, the organic templating agent in the mesoporous material can be rapidly removed, such that problems such as harsh experiment conditions, complicated operation steps, and long process cycle of existing solvent extraction methods are solved.

Description

technical field [0001] The invention belongs to a method for removing an organic template in a mesoporous material, in particular to a method for quickly removing the organic template in a mesoporous material by a solvent extraction method. Background technique [0002] Mesoporous materials (with a pore size of 2 to 50 nm) have the advantages of low density, high porosity, large specific surface, good permeability and selective permeability to gases, and significant surface effects. In 1992, researchers from Mobil Oil Company synthesized silicate / aluminosilicate mesoporous molecular sieve series material M41S by using surfactant liquid crystal template method. The series of materials mainly include: hexagonal MCM-41; cubic MCM-48; layered MCM-50. The emergence of M41S mesoporous materials is a new leap in the development of molecular sieves. Its unique molecular structure and performance have attracted widespread attention in the field of molecular sieves and catalysis. A ...

Claims

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Application Information

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IPC IPC(8): C01B39/00C01B37/00
Inventor 吴美玲吴斌斌周灵杰王磊李军马颖涛
Owner CHINA PETROLEUM & CHEM CORP
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