Preparation and SO2 Adsorption Behavior of Coconut Shell-Based Activated Carbon via Microwave-Assisted Oxidant Activation

被引：0

作者：

Jia Fengrui ^{[1
,2
]}

Li Zhou ^{[2
]}

Wang Engang ^{[1
]}

He Jicheng ^{[1
]}

Dong Hui ^{[1
]}

Liu Guangxin ^{[2
]}

Jian Weiwei ^{[2
]}

机构：

[1] Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China

[2] Liaoning Shihua Univ, Coll Petr Engn, Fushun 113001, Peoples R China

来源：

CHINA PETROLEUM PROCESSING & PETROCHEMICAL TECHNOLOGY | 2018年 / 20卷 / 01期

关键词：

coconut shell-based activated carbon; SO2; adsorption; microwave; oxidant; oxygen functional groups; DENSITY-FUNCTIONAL THEORY; CHEMICAL ACTIVATION; METHANE ADSORPTION; K2CO3; ACTIVATION; REGENERATION; OXIDATION; REMOVAL; CAPTURE; FIBER; ACID;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A series of oxidants supported on coconut shell-based activated carbon (CAC) through microwave irradiation were prepared and characterized using scanning electron microscopy (SEM), N-2 adsorption/desorption analysis, and X-ray photoelectron spectroscopy (XPS). The SO2 adsorption capacities and rates were evaluated by adsorption tests performed in a fixed bed reactor with a simulated flue gas, and the adsorption isotherm models were validated against the experimental results. The findings revealed that the SO2 adsorption capacity decreased in the following order: MW-K2Cr2O7-CAC > MW-KMnO4-CAC > MW-H2O2-CAC > MW-CAC. The SO2 adsorption capacities and adsorption rates of the samples increased with an increasing oxidizability of the oxidants owing to the increment of mean pore size and oxygen-containing functional groups. In addition, a high initial SO2 concentration and a low bed temperature could positively affect the SO2 adsorption. Finally, the Langmuir model validated that SO2 was mainly adsorbed through chemical adsorption on the sample surfaces.

引用

页码：67 / 74

页数：8

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