Preparation method of mesoporous carbon-based solid acid and mesoporous carbon-based solid acid prepared through method and application

A technology of mesoporous carbon and solid acid, which is applied in the field of mesoporous carbon, can solve the problems of high cost, cumbersome synthesis process, and increase the difficulty of mesoporous carbon, and achieve the effects of simple operation, cost reduction, and short preparation process time

Inactive Publication Date: 2016-05-25
HUANGGANG NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above two methods are the main synthesis methods of mesoporous carbon-based materials so far. The hard template method can obtain highly ordered mesoporous carbon-based materials, but the synthesis process is cumbersome and costly.
The soft template method based on organic-or...

Method used

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  • Preparation method of mesoporous carbon-based solid acid and mesoporous carbon-based solid acid prepared through method and application
  • Preparation method of mesoporous carbon-based solid acid and mesoporous carbon-based solid acid prepared through method and application
  • Preparation method of mesoporous carbon-based solid acid and mesoporous carbon-based solid acid prepared through method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 3.42g of sucrose was weighed and dissolved in 40ml of water to obtain a precursor solution, and then 0.5g of P123 was dissolved in the precursor solution to obtain a mixed solution of the precursor and the template. Slowly add 5ml of concentrated sulfuric acid (98%) into the mixed solution of precursor and template, stir evenly, transfer the mixed solution of precursor and template to a petri dish, keep it at 40°C for 6h, then transfer to 100°C After keeping in the oven at ℃ for 6 hours, the mixture of precursor and template was obtained, and the obtained mixture was calcined in an inert atmosphere at a heating rate of 1 ℃ / min to 400 ℃ for 4 hours to remove the template, and the mesoporous carbon-based solid acid was obtained. The morphology of the product was characterized by transmission electron microscopy, as figure 1 As shown, the crystallinity of the product was characterized by X-ray diffraction pattern, as figure 2 As shown in the optical angle X-ray diffracti...

Embodiment 2

[0035] 3.42g of sucrose was weighed and dissolved in 40ml of water to obtain a precursor solution, and then 1.0g of F127 was dissolved in the precursor solution to obtain a mixed solution of the precursor and the template. Slowly add 5ml of concentrated phosphoric acid (85%) into the mixed solution of the precursor and the template, stir evenly, transfer the mixed solution of the precursor and the template to a petri dish, keep it at a temperature of 50°C for 6h, and then transfer to 100°C After keeping in the oven at ℃ for 6 hours, the mixture of precursor and template was obtained, and the obtained mixture was calcined in an inert atmosphere at a heating rate of 1 ℃ / min to 400 ℃ for 4 hours to remove the template, and the mesoporous carbon-based solid acid was obtained. The morphology and crystallinity of the product are similar to those obtained in Example 1.

Embodiment 3

[0037] 3.42g of sucrose was weighed and dissolved in 40ml of water to obtain a precursor solution, and then 1.5g of F108 was dissolved in the precursor solution to obtain a mixed solution of the precursor and the template. Slowly add 5ml of concentrated phosphoric acid (85%) into the mixed solution of precursor and template, stir evenly, transfer the mixed solution of precursor and template to a Petri dish, keep it at 60°C for 6h, then transfer to 100°C After keeping in the oven at ℃ for 6 hours, the mixture of precursor and template was obtained, and the obtained mixture was calcined in an inert atmosphere at a heating rate of 1 ℃ / min to 400 ℃ for 4 hours to remove the template, and the mesoporous carbon-based solid acid was obtained. The morphology and crystallinity of the product are similar to those obtained in Example 1.

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Abstract

A preparation method of mesoporous carbon-based solid acid includes the steps of dissolving water-soluble carbohydrate in water to obtain a precursor solution, dissolving nonionic surface active agent in the solution to obtain a mixed solution of a precursor and a template, adding inorganic acid to transfer the solution into a culture dish, evaporating the culture dish at a temperature of 40-60 DEG C for 6 hours, conducting thermal setting at a temperature of 100-150 DEG C for 6-24 hours to obtain a mixture of the precursor and the template, and directly calcinating the obtained mixture under the inert atmosphere to remove the template to obtain the mesoporous carbon-based solid acid. Carbohydrate low in price is adopted as the precursor, inorganic acid serves as carburizer, the acid is prepared through an evaporation, induction, self-assembly and carbonization method, the method is easy to operate and beneficial to large-scale production, and the mesoporous carbon-based solid acid synthesized through the method has a large specific surface and abundant surface acid groups and can be widely applied to heterogeneous acid catalysis and biomass conversion.

Description

technical field [0001] The invention relates to a mesoporous carbon with surface acidity. Background technique [0002] Porous carbon materials have a wide range of applications in adsorption, catalysis, separation of biomolecules, biological enzymes, hydrogen storage, and electrochemistry. So far, there are two main routes for the synthesis of mesoporous carbon. One is to use ordered precursors such as mesoporous silicon and mesoporous silicon-aluminum materials as templates, and use sucrose, glucose, furfuryl alcohol, etc. Nano-casting method to synthesize, this method can be collectively referred to as "hard template" method, such as, the patent of Liu Xiaoying of Fudan University, application number: 03114799.2, the patent of Dai Hongxing of Beijing University of Technology, application number: 200710118755.1, Shan Yongkui of East China Normal University patent, application number: 200710036630.4; another main synthesis method is the so-called "soft template" method, wh...

Claims

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Application Information

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IPC IPC(8): B01J27/053B01J27/16C07D307/46
CPCB01J27/053B01J27/16C07D307/46
Inventor 张万举田正芳解明江项坤张豫薄祥昆郭学锋
Owner HUANGGANG NORMAL UNIV
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