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Article
Enhancing CO−Water Mass Transfer by Functionalized MCM41 Nanoparticles
Industrial & Engineering Chemistry Research
  • Haiyang Zhu, Iowa State University
  • Brent H. Shanks, Iowa State University
  • Theodore J. Heindel, Iowa State University
Document Type
Article
Publication Date
10-15-2008
DOI
10.1021/ie800238w
Abstract
Organic groups are grafted to 250-nm-diameter MCM41 nanoparticles with a spherical morphology to enhance the CO−water volumetric mass-transfer coefficient (kLa) for synthesis gas fermentation. The results indicate that (i) 250-nm MCM41 nanoparticles show a higherkLa value than large silica particles (1.4 and 7 μm), (ii) surface hydroxyl groups on MCM41 nanoparticles play an important role in mass-transfer enhancement, (iii) organic groups grafted to MCM41 modify the mass-transfer enhancement, and (iv) mercaptan groups grafted to MCM41 show the most mass-transfer enhancement of 1.9 times that of no nanoparticle addition. The CO−water mass-transfer enhancement depends on the interaction between the nanoparticles and the CO molecules, which is influenced by the hydrophobicity of the nanoparticles and the functional group on the nanoparticles.
Comments

Reprinted with permission from Industrial & Chemistry Engineering Research 47 (2008): 7881–7887, doi:10.1021/ie800238w. Copyright 2008 American Chemical Society.

Copyright Owner
American Chemical Society
Language
en
Date Available
2014-02-11
File Format
application/pdf
Citation Information
Haiyang Zhu, Brent H. Shanks and Theodore J. Heindel. "Enhancing CO−Water Mass Transfer by Functionalized MCM41 Nanoparticles" Industrial & Engineering Chemistry Research Vol. 47 Iss. 20 (2008) p. 7881 - 7887
Available at: http://works.bepress.com/brent_shanks/6/