VOC removal: Comparison of MCM-41 with hydrophobic zeolites and activated carbon

Zhao, XS, Ma, Q and Lu, GQM (1998) VOC removal: Comparison of MCM-41 with hydrophobic zeolites and activated carbon. Energy & Fuels, 12 6: 1051-1054. doi:10.1021/ef980113s


Author Zhao, XS
Ma, Q
Lu, GQM
Title VOC removal: Comparison of MCM-41 with hydrophobic zeolites and activated carbon
Journal name Energy & Fuels   Check publisher's open access policy
ISSN 0887-0624
Publication date 1998-01-01
Sub-type Article (original research)
DOI 10.1021/ef980113s
Volume 12
Issue 6
Start page 1051
End page 1054
Total pages 4
Language eng
Abstract The recently discovered mesoporous molecular sieve MCM-41 was tested as an adsorbent for VOC removal. Its adsorption/desorption properties were evaluated and compared with other hydrophobic zeolites (silicalite-1 and zeolite Y) and a commercial activated carbon, BPL. The adsorption isotherms of some typical VOCs (benzene, carbon tetrachloride, and n-hexane) on MCM-41 are of type IV according to the IUPAC classification, drastically different from the other microporous adsorbents, indicating that VOCs, in the gas phase, have to be at high partial pressures in order to make the most of the new mesoporous material as an adsorbent for VOC removal. However, a proper modification of the pore openings of MCM-41 can change the isotherm types from type IV to type I without remarkable loss of the accessible pare volumes and, therefore, significantly enhance the adsorption performance at low partial pressures. Adsorption isotherms of water on these adsorbents are all of type V, demonstrating that they possess a similar hydrophobicity. Desorption of VOCs from MCM-41 could be achieved at lower temperatures (50-60 degrees C), while this had to be conducted at higher temperatures (100-120 degrees C) for microporous adsorbents, zeolites, and activated carbons.
Keyword Energy & Fuels
Engineering, Chemical
Mesoporous Molecular-sieves
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Mon, 13 Aug 2007, 20:46:59 EST