Enhancing CO−Water Mass Transfer by Functionalized MCM41 NanoparticlesIndustrial & Engineering Chemistry Research
AbstractOrganic 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.
Copyright OwnerAmerican Chemical Society
Citation InformationHaiyang 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/