Effect of activated carbon modification on the catalyst for adsorption removal of arsenic

被引：0
作者：
Feng Q. [1 ]
Jiang Z. [1 ]
Li Y. [2 ]
Ju Y. [1 ]
Zhao Q. [1 ]
Li T. [2 ]
Zhong H. [1 ]
Ge S. [1 ]
机构：
[1] Petrochemical Research Institute, CNPC, Beijing
[2] Key Laboratory of Clean Fuel, CNPC, Beijing
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2021年 / 40卷 / 06期
关键词：
Activated carbon; Adsorption; Catalyst; Modification by potassium carbonate (K[!sub]2[!/sub]CO[!sub]3[!/sub]); Support;
D O I：
10.16085/j.issn.1000-6613.2020-1311
中图分类号：
学科分类号：
摘要：
The activated carbon (AC) was chemically modified by K2CO3, and the specific surface area, pore volume and pore size of the AC after modification were investigated. As the mass ratio of K2CO3 to AC (alkali-carbon ratio) increased, the specific surface area of the modified AC showed a trend of increasing first and then decreasing. When the ratio of alkali to carbon was 6, the specific surface area of the modified AC increased from the initial 653.3m2/g to 1333.6m2/g. The modified AC was then used as the support to prepare an adsorption catalyst for arsenic removal, which exhibited excellent arsenic adsorption owing to the multi-level pore channels composed of micropore-mesopores. The micropore ensured the catalyst with a large specific surface area, so the active components can be efficiently dispersed on it, while the mesopore allowed the macromolecular arsenide to fully contact and react with the active metal components, and thus improved arsenic removal efficiency. © 2021, Chemical Industry Press Co., Ltd. All right reserved.
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页码：3215 / 3223
页数：8
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