標題: Adsorption of Carbon Dioxide from Gas Streams via Mesoporous Spherical-Silica Particles
作者: Lu, Chungsying
Bai, Hsunling
Su, Fengsheng
Chen, Wenfa
Hwang, Jyh Feng
Lee, Hsiu-Hsia
環境工程研究所
Institute of Environmental Engineering
公開日期: 1-四月-2010
摘要: A relatively new mesoporous silica sorbent for environmental protection applications (i.e., mesoporous spherical-silica particles [MSPs]), was modified by N-[3(trimethoxysilyl)propyl]ethylenediamine (EDA) solution and was tested for its potential in the separation of carbon dioxide (CO(2)) from flue gas. The CO(2) adsorption capacity of MSP and MSP(EDA) increased with temperature from 20 to 60 degrees C but decreased with temperature from 60 to 100 degrees C. The mechanism of CO(2) adsorption on both samples is mainly attributed to physical interaction regardless of temperature change. The MSP(EDA) have good adsorption performance as compared with EDA-modified zeolite or granular activated carbon conducted in this study and many types of silica sorbents reported in the literature. The cyclic CO(2) adsorption showed that spent MSP(EDA) could be effectively regenerated at 120 degrees C for 25 min and CO(2) adsorption capacity of MSP(EDA) was preserved during 16 cycles of adsorption and thermal regeneration. These results suggests that MSP(EDA) are efficient CO(2) sorbents and can be stably used in the prolonged cyclic operation.
URI: http://dx.doi.org/10.3155/1047-3289.60.4.489
http://hdl.handle.net/11536/5539
ISSN: 1047-3289
DOI: 10.3155/1047-3289.60.4.489
期刊: JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
Volume: 60
Issue: 4
起始頁: 489
結束頁: 496
顯示於類別:期刊論文


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