Effects of metal catalysts on CO2 gasification reactivity of biomass char

被引：321

作者：

Huang, Yanqin ^{[1
,2
]}

Yin, Xiuli ^{[1
]}

Wu, Chuangzhi ^{[1
]}

Wang, Congwei ^{[1
]}

Xie, Jianjun ^{[1
]}

Zhou, Zhaoqiu ^{[1
]}

Ma, Longlong ^{[1
]}

Li, Haibin ^{[1
]}

机构：

[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, Renewable Energy & Gas Hydrate Key Lab, Guangzhou 510640, Guangdong, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

来源：

BIOTECHNOLOGY ADVANCES | 2009年 / 27卷 / 05期

关键词：

Fir chars; CO2; gasification; Metal catalysts; XRD; SEM; Kinetic parameters; COAL; CARBON;

D O I：

10.1016/j.biotechadv.2009.04.013

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The effects of five metal catalysts (K, Na, Ca, Mg, and Fe) on CO2 gasification reactivity of fir char were studied using thermal gravimetric analysis. The degree of carbonization, crystal structure and morphology of char samples was characterized by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The CO2 gasification reactivity of fir char was improved through the addition of metal catalysts, in the order K>Na>Ca>Fe>Mg. XRD analysis indicated that Na and Ca improved the formation of crystal structure and that, Mg enhanced the degree of carbon structure ordering. SEM analysis showed that spotted activation centers were distributed on the surface of char samples impregnated with catalysts. Moreover, a loose flake structure was observed on the surface of both K-char and Na-char. Finally, the kinetic parameters of CO2 gasification of char samples were calculated mathematically. (C) 2009 Elsevier Inc. All rights reserved.

引用

页码：568 / 572

页数：5

共 23 条

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[Anonymous], IRONMAKING

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