沥青基球形活性炭对 CO2 的吸脱附行为研究

doi:10.3724/SP.J.1077.2011.00149

无机材料学报 ›› 2011, Vol. 26 ›› Issue (2): 149-154.DOI: 10.3724/SP.J.1077.2011.00149 CSTR: 32189.14.SP.J.1077.2011.00149

沥青基球形活性炭对 CO₂ 的吸脱附行为研究

谢菲, 王艳莉, 詹亮, 葛明, 梁晓怿, 乔文明, 凌立成

华东理工大学化学工程联合国家重点实验室, 上海 200237

收稿日期:2010-05-05 修回日期:2010-06-25 出版日期:2011-02-20 网络出版日期:2011-01-21
作者简介:谢菲(1985-), 女, 硕士研究生. 通讯联系人詹亮, 副教授. E-mail: zhanliang@ecust.edu.cn
基金资助:
国家863重点项目(2008AA062302);国家自然科学基金(20806024,50672025,5073003,51002051);中国博士点基金(20070251008);上海市国际合作项目(08160704000)

Adsorption/Desorption Performance of CO₂on Pitch-based SphericalActivated Carbons

XIE Fei, WANG Yan Li, ZHAN Liang, GE Ming, LIANG Xiao-Yi, QIAO Wen-Ming, LING Li-Cheng

State KeyLaboratory of Chemical Engineering, East China University of Science andTechnology, Shanghai 200237, China

Received:2010-05-05 Revised:2010-06-25 Published:2011-02-20 Online:2011-01-21
Supported by:
863 Program (2008AA062302); National Science Foundation of China (50730003, 50672025, 20806024, 51002051); Research Fund of China for the Doctoral Program of Higher Education (20070251008) ; Shanghai International Cooperation Project (08160704000)

摘要/Abstract

摘要： 考察了沥青基球形活性炭(PSAC)的孔结构与CO₂吸附容量间的内在关系及其脱附性能. 采用N₂吸附法分析PSAC的孔结构, 由穿透曲线测试其对CO₂的平衡吸附量. 实验结果表明在CO₂/N₂混合气氛下, 活性炭对CO₂的吸附容量与孔径小于1nm的微孔比表面积呈线性关系; 当PSAC担载5%的三聚氰胺后, 对CO₂(15%)的平衡吸附量由0.91mmol/g增加到1.15mmol/g, 提高了26.3%; 采用抽真空脱附时, 循环脱附效率为74.6%, 而电解吸-抽真空耦合脱附工艺可使CO₂的循环脱附效率接近100%.

关键词: 沥青基球形活性炭, 二氧化碳, 吸附

Abstract: Therelationship between the pore structure parameter of pitch-based sphericalactivated carbons (PSACs) and adsorption capacity ofCO₂ was investigated as well as the desorption performance. The pore structure characteristics of PSACs were analyzed by nitrogenadsorption at 77K and the equilibrium adsorption amount of CO₂ wasdetermined through the breakthrough curve. The results indicated that there wasa linear relationship between the equilibrium adsorption amount of CO₂and the specific surface area of micropores with pore size smaller than 1 nm.When 5% melamine was coated on the surface of PSAC, the equilibrium adsorptionamount of CO₂ increased 26.3% from 0.91 mmol/g to 1.15 mmol/g. Thedesorption cycle efficiency of CO₂ is 74.6% with Vacuum SwingAdsorption (VSA), while it can reach 100% with combined Electric SwingAdsorption (ESA) and VSA.

Key words: pitch-based spherical activated carbon, carbon dioxide, adsorption

中图分类号:

TQ127

谢菲, 王艳莉, 詹亮, 葛明, 梁晓怿, 乔文明, 凌立成. 沥青基球形活性炭对 CO₂ 的吸脱附行为研究[J]. 无机材料学报, 2011, 26(2): 149-154.

XIE Fei, WANG Yan Li, ZHAN Liang, GE Ming, LIANG Xiao-Yi, QIAO Wen-Ming, LING Li-Cheng. Adsorption/Desorption Performance of CO₂on Pitch-based SphericalActivated Carbons[J]. Journal of Inorganic Materials, 2011, 26(2): 149-154.

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沥青基球形活性炭对 CO₂ 的吸脱附行为研究

Adsorption/Desorption Performance of CO₂on Pitch-based SphericalActivated Carbons

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