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题名: Comparison of dynamic adsorption/desorption characteristics of toluene on different porous materials
作者: Zhang, Weiwei1;  Qu, Zhenping1;  Li, Xinyong1;  Wang, Yi1;  Ma, Ding2;  Wu, Jingjing2
关键词: dynamic adsorption/desorption ;  mesopores ;  micropores ;  toluene
刊名: JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
发表日期: 2012
DOI: 10.1016/S1001-0742(11)60751-1
卷: 24, 期:3, 页:520-528
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Four different types of adsorbents, SBA-15, MCM-41, NaY and SiO2, were used to study the dynamic adsorption/desorption of toluene. To further investigate the influence of pore structure on its adsorption performance, two SBA-15 samples with different microspores were also selected. It is shown that microporous material NaY has the largest adsorption capacity of 0.2873 mL/g, and the amorphous SiO2 exhibits the least capacity of 0.1003 mL/g. MCM-41 also shows a lower break through capacity in spite of the relatively small pore diameter, because it can not provide the necessary small geometric confinement for the tiny adsorbates. However, the mesoporous SBA-15 silica with certain micropore volume shows relatively higher adsorption capacity than that of MCM-41 silica. The presence of micropores directly leads to an increase in the dynamic adsorption capacity of toluene. Although NaY has the highest adsorption capacity for toluene, its complete desorption temperature for toluene is high (> 350 degrees C), which limits its wide application. On the contrary, mesoporous silica materials exhibits a good desorption performance for volatile organic compounds at lower temperatures. Among these materials mesoporous SBA-15 samples, with a larger amount micropores and a lower desorption temperature, are a potentially interesting adsorbent for the removal of volatile organic compounds. This behavior should been related with the best synergetic effect of mesopores and micropores.
关键词[WOS]: TEMPERATURE-PROGRAMMED DESORPTION ;  VOLATILE ORGANIC-COMPOUNDS ;  SBA-15 MATERIALS ;  Y-ZEOLITES ;  MESOPOROUS SILICA ;  ADSORPTION ;  MCM-41 ;  BENZENE ;  LOCATION ;  SYSTEM
语种: 英语
WOS记录号: WOS:000301869300023
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143104
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Linggong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Zhang, Weiwei,Qu, Zhenping,Li, Xinyong,et al. Comparison of dynamic adsorption/desorption characteristics of toluene on different porous materials[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2012,24(3):520-528.
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