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Porous carbon-based solid acid catalyst and preparation method thereof

A solid acid catalyst, carbon-based solid acid technology, applied in the field of material science, can solve the problems of low exposure of active centers, poor catalytic activity, etc., achieve excellent catalytic performance, simple and effective method, and improve the effect of specific surface area

Inactive Publication Date: 2014-01-29
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a large specific surface area, with excellent catalytic biomass conversion performance, sulfonate functionalized mesoporous carbon catalytic material, which overcomes the shortcomings of traditional acid catalytic materials such as low exposure of active centers and poor catalytic activity; at the same time Overcoming the impact of the hydrolysis passivation of the active center caused by the porous solid acid catalytic material of the inorganic framework being superior to the hydrophilic framework on its catalytic performance and regeneration ability, etc.

Method used

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  • Porous carbon-based solid acid catalyst and preparation method thereof
  • Porous carbon-based solid acid catalyst and preparation method thereof
  • Porous carbon-based solid acid catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] First, using ethanol as solvent and F127 as template to synthesize mesoporous sulfonate-functionalized nanoporous carbon catalytic materials.

[0031] Add 1.6 g of F127 to 25 g of absolute ethanol to dissolve, then add 5.0 g of furfural, then add 3.5 g of isethionic acid, stir for 30 minutes, transfer the reaction mixture to a petri dish and volatilize at room temperature for 24 hours to obtain a reddish-brown membrane material , bake the above material at 100 degrees Celsius for 24 hours, then transfer to 180 degrees Celsius and bake for 24 hours to get MC-SO 3 H initial product. MC-SO 3 The initial product of H is dispersed in 50 ml of ethanol and 7 ml of concentrated hydrochloric acid mixed solution, and refluxed at 90 degrees Celsius for 24 hours to obtain MC-SO4 with open channels. 3 H material.

Embodiment 2

[0033] Mesoporous sulfonate-functionalized nanoporous carbon catalytic materials were synthesized with ethanol as solvent and F127 as template, and the synthesis temperature was changed.

[0034] Add 1.6 g of F127 to 25 g of absolute ethanol to dissolve, then add 5.0 g of furfural, then add 3.5 g of isethionic acid, stir for 30 minutes, transfer the reaction mixture to a petri dish and volatilize at room temperature for 24 hours to obtain a reddish-brown membrane material , bake the above material at 120 degrees Celsius for 24 hours, then transfer to 160 degrees Celsius and bake for 24 hours to get MC-SO3 H initial product. MC-SO 3 The initial product of H is dispersed in 50 ml of ethanol and 7 ml of concentrated hydrochloric acid mixed solution, and refluxed at 90 degrees Celsius for 24 hours to obtain MC-SO4 with open channels. 3 H material.

Embodiment 3

[0036] Firstly, tetrahydrofuran was used as solvent and P123 was used as template to synthesize mesoporous sulfonate-functionalized nanoporous carbon catalyst materials.

[0037] 1.6 g of P123 was dissolved in 25 g of tetrahydrofuran, then 5.0 g of furfural was added, followed by 3.5 g of isethionic acid, and after stirring for 30 minutes, the reaction mixture was transferred to a petri dish and volatilized at room temperature for 24 hours to obtain a reddish-brown membrane material. Bake the above materials at 100 degrees Celsius for 24 hours, then transfer them to 180 degrees Celsius and bake them for 24 hours to get MC-SO 3 H initial product. MC-SO 3 The initial product of H is dispersed in 50 ml of ethanol and 7 ml of concentrated hydrochloric acid mixed solution, and refluxed at 90 degrees Celsius for 24 hours to obtain MC-SO4 with open channels. 3 H material.

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Abstract

The invention belongs to the technical field of material science, and discloses a porous carbon-based solid acid catalytic material with a large specific surface area and a mesoporous structure and a preparation method thereof. The catalyst takes a non-ionic surfactant F127 or P123 as a template agent and furfural as a carbon source, volatilization self assembly is carried out in the presence of isethionic acid so as to obtain a soft film type material, and high temperature crosslinking and carbonizing are then carried out for obtaining a sulfonate functionalization nano-porous carbon material; the template agent is removed under an ethanol reflowing condition, so that the nano porous carbon material is obtained. The material has the large specific surface area and has excellent acid catalytic performance, and the sulfonate functionalization mesoporous carbon catalytic material overcomes defects such as the low exposure degree and poor catalytic activity of an active center of a conventional acid catalytic material; moreover, the material can be used for overcoming the influences of the passivated hydrolization of the active center on the catalytic performance and regeneration capacity of the active center because the porous solid acid catalytic material of an inorganic framework is better than that of a hydrophile framework.

Description

technical field [0001] The invention relates to the technical field of material science, in particular to a porous carbon-based solid acid catalytic material with a large specific surface area and rich mesoporous structure and a preparation method thereof. Background technique [0002] Acid catalysis, as an important class of catalytic process, has a very wide range of applications in industry. Common acid catalysts such as sulfuric acid, hydrochloric acid or hydrofluoric acid have been widely used in industry. However, its strong corrosiveness, difficulty in recycling, and environmental problems caused during use greatly limit its wider industrial application. The industrial use of solid acids to replace liquid acids has received extensive attention in recent years and is also the subject of green and sustainable chemistry development. Solid acid has the advantages of less corrosiveness, easy recovery, and environmental protection. Common solid acids include strongly acid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J35/10B01J31/02B01J37/00C13K1/02C07D317/12C07C69/14C07C67/08
Inventor 孔维萍俞杭女何帅
Owner SHAOXING UNIVERSITY
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