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A preparation method of attapulgite/carbon molecular sieve composite desulfurization adsorption material

A technology of attapulgite and carbon molecular sieve, which is applied in the field of gasoline desulfurization, can solve the problems of increasing production cost and complicated production process, and achieve the effects of enhancing adsorption performance, reducing production cost and increasing surface active groups

Active Publication Date: 2019-11-12
常州大学盱眙凹土研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this production process is relatively complicated, which increases the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) At a temperature of 40°C, while stirring, 1000 grams of phenol was added to 300 grams of solute mass fraction of 10% sodium hydroxide solution, and kept stirring for 20 minutes; adding 500 grams of solute mass fraction was 36% Formaldehyde aqueous solution, warming up to 55°C, stirring and reacting for 60 minutes; quickly adding 60 grams of nano-attapulgite powder, and continuing to stir for 10 minutes; Stir and reflux for 60 minutes; finally cool to room temperature (25°C, the same below), filter, and wash the filter cake to obtain the attapulgite / phenolic resin composite material;

[0021] (2) pyrolyzing the attapulgite / phenolic resin composite material obtained in step (1) at 600° C. in nitrogen for 3 hours, and cooling to room temperature to obtain the attapulgite / carbonized composite material;

[0022] (3) Take 50.0 grams of the attapulgite / carbide composite material obtained in step (2) and mix evenly with 1.0 gram of cetyltrimethylammonium chloride, draw a va...

Embodiment 2

[0024] (1) At a temperature of 55°C, while stirring, 500 grams of resorcinol was added to 500 grams of solute mass fraction in a 30% sodium hydroxide solution, and kept stirring for 40 minutes; adding 500 grams of solute mass fraction Be 40% ethanol solution of benzaldehyde, heat up to 70°C, stir and react for 30 minutes; quickly add 150 grams of nano-attapulgite powder, continue stirring for 15 minutes; then continue to add 250 grams of benzaldehyde with a solute mass fraction of 40% The ethanol solution was heated to 90°C, stirred and refluxed for 90 minutes; finally cooled to room temperature (25°C, the same below), filtered, and the filter cake was washed to obtain the attapulgite / phenolic resin composite material;

[0025] (2) pyrolyzing the attapulgite / phenolic resin composite material obtained in step (1) at 850° C. in nitrogen for 1 hour, and cooling to room temperature to obtain the attapulgite / carbonized composite material;

[0026] (3) Take 50.0 grams of the attapul...

Embodiment 3

[0028] (1) At a temperature of 50°C, while stirring, 500 grams of xylenol was added to 325 grams of solute mass fraction as 15% sodium hydroxide solution, and kept stirring for 30 minutes; adding 375 grams of solute mass fraction Be 38% ethanol solution of benzaldehyde, heat up to 60°C, stir and react for 45 minutes; quickly add 90 grams of nano-attapulgite powder, continue stirring for 13 minutes; then continue to add 150 grams of benzaldehyde with a solute mass fraction of 38% The ethanol solution was heated to 92°C, stirred and refluxed for 75 minutes; finally cooled to room temperature (25°C, the same below), filtered, and the filter cake was washed to obtain the attapulgite / phenolic resin composite material;

[0029] (2) pyrolyzing the attapulgite / phenolic resin composite material obtained in step (1) in nitrogen at 725°C for 2 hours, and cooling to room temperature to obtain the attapulgite / carbonized composite material;

[0030] (3) Get 50.0 grams of the attapulgite / car...

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PUM

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Abstract

The invention belongs to the field of gasoline desulfurization and particularly relates to a preparation method for an attapulgite / carbon molecular sieve compound desulfuration absorbing material. Themethod comprises the following steps: mixing phenolic substance, aldehydes material and attapulgite to prepare an attapulgite / phenolic resin composite material; pyrolyzing in inert gas and then mixing with an organic activating agent; reacting under high temperature in vacuum environment, thereby acquiring the attapulgite / carbon molecular sieve compound desulfuration adsorbing material.

Description

technical field [0001] The invention belongs to the field of gasoline desulfurization, and in particular relates to a preparation method of an attapulgite / carbon molecular sieve composite desulfurization adsorption material. Background technique [0002] Carbon molecular sieve is a kind of carbon adsorption material with developed pore structure and unique surface properties, and it is widely used in the fields of gas separation and purification, waste water impurity removal and purification, catalyst carrier and petroleum industry. In the process of carbon molecular sieve synthesis, carbon deposition can be used to improve the air separation performance of carbon molecular sieve, adjust its pore structure, and increase the specific surface area of ​​carbon molecular sieve. In this regard, in the prior art, hydrocarbon steam is generally used as a pore-adjusting agent at high temperature, and it is passed into the porous carbon material to be cracked to form carbon deposits ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C10G25/06
CPCB01J20/12B01J20/20B01J20/28011B01J20/28061B01J20/3064C10G25/06C10G2300/202
Inventor 姚超左士祥李霞章刘文杰钟璟陈乐王灿
Owner 常州大学盱眙凹土研发中心
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