Study of the Novel KMgAl Sorbents for CO2 Capture

被引：15

作者：

Li, Lei ^{[1
,2
]}

Zhang, Bingsheng ^{[2
]}

Wang, Feng ^{[1
]}

Zhao, Ning ^{[1
]}

Xiao, Fukui ^{[1
]}

Wei, Wei ^{[3
]}

Sun, Yuhan ^{[3
]}

机构：

[1] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China

[2] Shandong Acid Chem Co Ltd, Feicheng 271600, Peoples R China

[3] Chinese Acad Sci, Shanghai Adv Res Inst, Low Carbon Convers Ctr, Shanghai 201203, Peoples R China

来源：

ENERGY & FUELS | 2013年 / 27卷 / 09期

基金：

中国国家自然科学基金;

关键词：

LAYERED DOUBLE HYDROXIDES; POTASSIUM-BASED SORBENTS; CARBON-DIOXIDE CAPTURE; SOLID SORBENTS; WATER-VAPOR; DRY SORBENT; FLUE-GAS; HYDROTALCITE; REGENERATION; PRETREATMENT;

D O I：

10.1021/ef4010412

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 novel sorbent, MgO/Al2O3-supported K2CO3, for CO2 sorption was prepared. It was found that the sorbent prepared by the multi-impregnation method showed a large CO2 capture capacity at low temperature under simulated flue gases with MgO loading of 10 and 20 wt % (KMgAlI3010 and KMgAlI3020). The presence of water vapor pretreatment and MgO loadings had different effects on the CO2 adsorption mechanisms. For the KMgAlI3010 sorbent, the main phase was KHCO3 after CO2 adsorption. While for the KMgAlI3020 sorbent, when pretreated with less steam, the main phase was Mg2Al2(CO3)(4)(OH)(2)center dot 15H(2)O after CO2 adsorption. When pretreated with excess steam, however, the CO2 adsorption mechanism was similar to the KMgAlI3010 sorbent. Furthermore, the as-prepared KMgAl sorbents were stable even after 30 adsorption/desorption cycles.

引用

页码：5388 / 5396

页数：9

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