高比表面积介孔碳材料的混合模板法制备

doi:10.11962/1006-4990.2019-0554

Abstract

Abstract:

Mesoporous carbon materials were prepared by heat treatment,acid washing and drying with nano-sized zinc oxide and magnesium oxide as mixed template,KOH as activator and medium temperature coal tar pitch as carbon source.The caange of composition during the preparation process of mesoporous carbon materials was analyzed by X-ray diffraction.The surface morphology of the mesoporous carbon materials were observed by scanning electron microscopy.The mesoporous carbon materials were characterized by N₂ adsorption-desorption isotherm.The results showed that with the increase of temperature,the specific surface area of the mesoporous carbon materials increased gradually because of the more and more intense reaction in the system and the fragmentation generated in the system.With the increase of template content,the specific surface area of the mesoporous carbon materials after acid pickling decreased gradually and the average pore size increased gradually due to the pore bonding.The maximum specific surface area of mesoporous carbon materials was 2 509.76 m²/g.

Key words: coal tar pitch, template, carbon materials, mesoporous

CLC Number:

O613.7

Song Shihua,Zhang Wenjuan,Tian Wenhong. Preparation of mesoporous carbon materials with high specific surface area by mixed template method[J]. Inorganic Chemicals Industry, 2020, 52(10): 88-91.

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References 15

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产品	BET比表面积/（m²·g^-1）	总孔容/（cm³·g^-1）	微孔孔容/（cm³·g^-1）	平均孔径 /nm
PC-1.5-1-500	815.19	0.41	0.27	4.14
PC-1.5-1-600	1 728.66	0.82	0.58	3.72
PC-1.5-1-700	1 989.60	1.15	0.67	5.05
PC-1.5-1-800	2 509.76	1.47	0.65	3.76

产品	BET比表面积/（m²·g^-1）	总孔容/（cm³·g^-1）	微孔孔容/（cm³·g^-1）	平均孔径/nm
PC-0.5-1-600	2 025.62	0.92	0.62	2.19
PC-1-1-600	1 848.49	0.81	0.61	2.82
PC-1.5-1-600	1 728.66	0.82	0.58	3.72
PC-2-1-600	1 641.91	1.00	0.53	5.18

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Preparation of mesoporous carbon materials with high specific surface area by mixed template method

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