Method for preparing ordered mesoporous carbon microspheres

A mesoporous carbon and microsphere technology, which is applied in the preparation/purification of carbon, etc., can solve the problems of increased reaction cost, influence of ordered pore structure of products, and difficult control of reaction conditions, and achieves mild reaction conditions, abundant raw materials, shortened The effect of reaction time

Active Publication Date: 2017-11-24
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods usually need to add an acid-base catalyst in the reaction, the reaction conditions are difficult to control and have a great impact on the preparation of the ordered pore structure of the product, which increases the cost of the reaction

Method used

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  • Method for preparing ordered mesoporous carbon microspheres
  • Method for preparing ordered mesoporous carbon microspheres
  • Method for preparing ordered mesoporous carbon microspheres

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Using straw as raw material and surfactant sodium dodecylsulfonate as soft template, weigh 1g of template agent and dissolve it in 30ml of water, stir continuously in a water bath at 60°C until it is completely dissolved, and weigh 10g of ground straw powder and mix it with After mixing, transfer it to a polytetrafluoroethylene-lined reactor with a volume of 100ml, ensure that the volume of the solution and the volume of the kettle are 13:20, raise the temperature to the target temperature of 260°C at a heating rate of 5°C / min, keep the temperature for 16 hours, and cool down to room temperature The dark brown solid was collected by filtration, washed until the filtrate was colorless, and then ground. The obtained powder was placed in a tubular calciner, and carbonized at 800°C for 1 hour under the protection of nitrogen atmosphere to remove the template agent, and carbon microspheres with ordered mesoporous structure were obtained. .

[0024] The material prepared by t...

Embodiment 2

[0026] Using rice straw as raw material and surfactant P123 as soft template, weigh 0.5g of template agent and dissolve it in 30ml of water, stir continuously in a 60°C water bath until it is completely dissolved, then weigh 4g of rice straw powder and mix it with it, then transfer it to a 100ml In a polytetrafluoroethylene-lined reactor, ensure that the volume of the solution and the volume of the kettle are 13:20, the temperature is raised to the target temperature of 220°C at a heating rate of 5°C / min, and the temperature is kept at a constant temperature for 14 hours. After cooling down to room temperature, the dark brown solid is collected by filtration and washed until The filtrate was colorless and ground, and the obtained powder was put into a tubular calciner, and carbonized at 900°C for 2 hours under the protection of nitrogen atmosphere to remove the template agent, and carbon microspheres with ordered mesoporous structure were obtained.

[0027] The material prepare...

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Abstract

The invention relates to a method for preparing ordered mesoporous carbon microspheres. The method is characterized by comprising the following steps: by using a biomass resource as a raw material, and using a surfactant as a soft template, pretreating under hydrothermal environment, carbonizing at high temperature, and removing the soft template, so as to obtain the ordered mesoporous carbon microsphere with adjustable pore shapes; adjusting a usage ratio of the raw material and the soft template, carbonizing time, temperature and other parameters, so as to realize the controllable preparation of an ordered mesoporous structure. The method has the main characteristics that the biomass resource is used as the raw material, so that the cost is low, the obtaining is easy, the production cost is reduced, the sustainable development of carbon is realized, and the reutilization of the resource is effectively promoted; by utilizing the action of self-assembly of the soft template under the carbonizing condition and the function of a biomass-based carbon precursor, the ordered mesoporous structure with different mesopore shapes is formed.

Description

Technical field: [0001] The invention relates to the field of nanomaterial preparation, in particular to a method for preparing ordered mesoporous carbon microspheres. Background technique: [0002] Carbon materials with ordered mesoporous structures usually have high specific surface area, pore volume, narrow pore size distribution and continuously adjustable pore structure, and are widely and effectively used in aqueous solutions for metal ions, organic pollutants and small molecule dyes. The removal of capacitor electrode materials, fuel cell catalysts, etc. The ordered pore structure directly affects the physical and chemical properties of the prepared carbon materials, so it is of practical significance to seek a preparation method to prepare and synthesize carbon materials with adjustable ordered mesoporous structures. [0003] The soft template method is an effective method for preparing controllable pore structures, especially mesoporous structures. Amphiphilic bloc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05
CPCC01P2004/04C01P2004/03C01P2006/16C01P2004/62C01P2004/61
Inventor 吴琼于世涛刘仕伟解从霞于海龙
Owner QINGDAO UNIV OF SCI & TECH
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