Preparation of a dual Pore Structure Activated Carbon from Rice Husk Char as an Adsorbent for CO2 Capture

被引：139

作者：

Li, Ming ^{[1
]}

Xiao, Rui ^{[1
]}

机构：

[1] Southeast Univ, Minist Educ, Key Lab Energy Thermal Convers & Control, Nanjing 210096, Jiangsu, Peoples R China

来源：

FUEL PROCESSING TECHNOLOGY | 2019年 / 186卷

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Rice husk char; Activated carbon; Adsorption; Dual pore structure; CO2; capture; POROUS CARBONS; CHEMICAL ACTIVATION; DIOXIDE CAPTURE; KOH ACTIVATION; ADSORPTION; PRESSURE; CH4;

D O I：

10.1016/j.fuproc.2018.12.015

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Activated carbon was prepared from rice husk char by leaching with K2CO3 after CO2 activation, and its CO2 adsorption capacity, kinetics and regeneration were investigated. The results showed that the prepared activated carbon had a dual pore structure of micro-pores and meso-pores with specific surface area, micropore volume and mesopore volume of 1097 m(2)/g, 0.34 cm(3)/g and 0.49 cm(3)/g, respectively. The prepared activated carbon exhibited an excellent CO2 adsorption capacity and a good CO2 selectivity. The CO2 uptake and selectivity were 3.1 mmol/g and 7.6 at 25 degrees C, respetively, which were comparable to those of activated carobns prepared by chemical activation using KOH as an activator. Besides, the prepared activated carbon showed a fast CO2 adsorption kinetics and an excellent recyclability.

引用

页码：35 / 39

页数：5

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