Characteristics of an advanced carbon sorbent for CO2 capture

被引：80

作者：

Hornbostel, Marc D. ^{[1
]}

Bao, Jianer ^{[1
]}

Krishnan, Gopala ^{[1
]}

Nagar, Anoop ^{[1
]}

Jayaweera, Indira ^{[1
]}

Kobayashi, Takao ^{[1
]}

Sanjurjo, Angel ^{[1
]}

Sweeney, Josh ^{[2
]}

Carruthers, Donald ^{[2
]}

Petruska, Melissa A. ^{[2
]}

Dubois, Lawrence ^{[2
]}

机构：

[1] SRI Int, Menlo Pk, CA 94025 USA

[2] ATMI Inc, Danbury, CT 06810 USA

来源：

CARBON | 2013年 / 56卷

关键词：

ACTIVATED CARBON; DIOXIDE CAPTURE; KINETICS; ADSORPTION; SEQUESTRATION; SORPTION;

D O I：

10.1016/j.carbon.2012.12.082

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The adsorption and desorption characteristics on an advanced carbon sorbent for gases present in the flue gas stream, including CO2, N-2, O-2, Ar, H2O vapor, and impurities NO and SO2 are discussed. At 5 degrees C and 1 atm CO2 pressure, this carbon sorbent can uptake 20 wt% (or 4.5 mmol/g) of CO2, with high Henry's law selectivity over N-2, O-2, and Ar. The heat of adsorption for CO2 decreases from similar to 28 kJ/mol (290 meV) to similar to 25.7 kJ/mol (260 meV) as the coverage of CO2 increases; whereas the heat of adsorption for N-2, O-2, and Ar is in the range of 16-17 kJ/mol. The carbon sorbent has a high surface area of 1270 m(2)/g, high thermal conductivity (0.8 W/m K), low heat capacity (1 J/g K), high mechanical strength, and high attrition resistance. his an ideal candidate for post-combustion CO2 capture using rapid pressure swing and rapid temperature swing methods. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：77 / 85

页数：9

共 19 条

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