Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received October 27, 2011
Accepted June 18, 2012
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
Effect of nanocrystallite size of TiO2 in Co/TiO2 and Co/TiO2-Ru catalysts on methanation
Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand
bunjerd.j@chula.ac.th
Korean Journal of Chemical Engineering, January 2013, 30(1), 50-54(5), 10.1007/s11814-012-0094-0
Download PDF
Abstract
We studied the effect of crystallite size of nanocrystalline TiO2 derived from the sol-gel method on the properties of Co/TiO2 catalysts. First, nanocrystalline TiO2 supports having different crystallite sizes were prepared via the sol-gel method by varying the water:alkoxide ratios from 4 to 165. Then, they were used as support for the cobalt catalyst. After calcination, the crystallite size of Co3O4 was dependent on the size of TiO2 support. CO hydrogenation under methanation was performed to determine the activity and selectivity of Co/TiO2 catalysts. It revealed that the catalyst with smaller size of TiO2 crystallite exhibited higher catalytic activity due to higher Co dispersion without significant change in product selectivity. In addition, the Ru modification on the TiO2 support was also investigated. The Ru modification resulted in increased activity regardless of the size of TiO2 crystallite.
References
Khodakov AY, Chu W, Fongarland P, Chem. Rev., 107(5), 1692 (2007)
Okabe K, Li XH, Wei MD, Arakawa H, Catal. Today, 89(4), 431 (2004)
Kogelbauer A, Goodwin JG, Oukaci R, J. Catal., 160(1), 125 (1996)
Tauster SJ, Fung SC, Garten RL, J. Am. Chem. Soc., 100, 170 (1978)
Jongsomjit B, Goodwin JG, Catal. Today, 77(3), 191 (2002)
Jongsomjit B, Panpranot J, Goodwin JG, J. Catal., 204(1), 98 (2001)
Soleda SL, Iglesia E, Fiatoa RA, Baumgartnera JE, Vromana H, Miseoa S, Topics Catal., 26, 101 (2003)
Tsubaki N, Sun SL, Fujimoto K, J. Catal., 199(2), 236 (2001)
Jacobs G, Das TK, Zhang YQ, Li JL, Racoillet G, Davis BH, Appl. Catal. A: Gen., 233(1-2), 263 (2002)
Iglesia E, Soled SL, Fiato RA, Via GH, J. Catal., 143, 345 (1993)
Suriye K, Praserthdam P, Jongsomjit B, Appl. Surf. Sci., 253(8), 3849 (2007)
Suriye K, Praserthdam P, Jongsomjit B, Ind. Eng. Chem. Res., 44(17), 6599 (2005)
Jongsomjit B, Sakdamnuson C, Goodwin JG, Praserthdam P, Catal. Lett., 94(3-4), 209 (2004)
Shukla S, Seal S, Vanfleet R, J. Sol-Gel Sci. Technol., 27, 119 (2003)
Baiju KV, Shukla S, Sandhya KS, James J, Warrier KGK, J. Phys. Chem. C., 111, 7612 (2007)
Alexander LE, X-ray diffraction procedures for polycrystalline amorphous, 2nd Ed., Wiley & Sons, New York (1974)
Jongsomjit B, Wongsalee T, Praserthdam P, Mater. Chem. Phys., 97(2-3), 343 (2006)
Kittiruangrayab S, Burakorn T, Jongsomjit B, Praserthdam P, Catal. Lett., 124(3-4), 376 (2008)
Kogelbauer A, Goodwin JG, Oukaci R, J. Catal., 160(1), 125 (1996)
Li JL, Jacobs G, Zhang YQ, Das T, Davis BH, Appl. Catal. A: Gen., 223(1-2), 195 (2002)
Hosseini SA, Taeb A, Feyzi F, Yaripour F, Catal. Commun., 5, 137 (2004)
Infantes-Molina A, Merida-Robles J, Rodriguez-Castellon E, Fierro JLG, Jimenez-Lopez A, Appl. Catal. A: Gen., 341(1-2), 35 (2008)
Reinikainen M, Niemela MK, Kakuta N, Suhonen S, Appl. Catal. A: Gen., 174(1-2), 61 (1998)
Jongsomjit B, Sakdamnuson C, Panpranot J, Praserthdam P, React. Kinet. Catal. Lett., 88(1), 65 (2006)
Jongsomjit B, Kittiruangrayub S, Praserthdam P, Mater. Chem. Phys., 105(1), 14 (2007)
Okabe K, Li XH, Wei MD, Arakawa H, Catal. Today, 89(4), 431 (2004)
Kogelbauer A, Goodwin JG, Oukaci R, J. Catal., 160(1), 125 (1996)
Tauster SJ, Fung SC, Garten RL, J. Am. Chem. Soc., 100, 170 (1978)
Jongsomjit B, Goodwin JG, Catal. Today, 77(3), 191 (2002)
Jongsomjit B, Panpranot J, Goodwin JG, J. Catal., 204(1), 98 (2001)
Soleda SL, Iglesia E, Fiatoa RA, Baumgartnera JE, Vromana H, Miseoa S, Topics Catal., 26, 101 (2003)
Tsubaki N, Sun SL, Fujimoto K, J. Catal., 199(2), 236 (2001)
Jacobs G, Das TK, Zhang YQ, Li JL, Racoillet G, Davis BH, Appl. Catal. A: Gen., 233(1-2), 263 (2002)
Iglesia E, Soled SL, Fiato RA, Via GH, J. Catal., 143, 345 (1993)
Suriye K, Praserthdam P, Jongsomjit B, Appl. Surf. Sci., 253(8), 3849 (2007)
Suriye K, Praserthdam P, Jongsomjit B, Ind. Eng. Chem. Res., 44(17), 6599 (2005)
Jongsomjit B, Sakdamnuson C, Goodwin JG, Praserthdam P, Catal. Lett., 94(3-4), 209 (2004)
Shukla S, Seal S, Vanfleet R, J. Sol-Gel Sci. Technol., 27, 119 (2003)
Baiju KV, Shukla S, Sandhya KS, James J, Warrier KGK, J. Phys. Chem. C., 111, 7612 (2007)
Alexander LE, X-ray diffraction procedures for polycrystalline amorphous, 2nd Ed., Wiley & Sons, New York (1974)
Jongsomjit B, Wongsalee T, Praserthdam P, Mater. Chem. Phys., 97(2-3), 343 (2006)
Kittiruangrayab S, Burakorn T, Jongsomjit B, Praserthdam P, Catal. Lett., 124(3-4), 376 (2008)
Kogelbauer A, Goodwin JG, Oukaci R, J. Catal., 160(1), 125 (1996)
Li JL, Jacobs G, Zhang YQ, Das T, Davis BH, Appl. Catal. A: Gen., 223(1-2), 195 (2002)
Hosseini SA, Taeb A, Feyzi F, Yaripour F, Catal. Commun., 5, 137 (2004)
Infantes-Molina A, Merida-Robles J, Rodriguez-Castellon E, Fierro JLG, Jimenez-Lopez A, Appl. Catal. A: Gen., 341(1-2), 35 (2008)
Reinikainen M, Niemela MK, Kakuta N, Suhonen S, Appl. Catal. A: Gen., 174(1-2), 61 (1998)
Jongsomjit B, Sakdamnuson C, Panpranot J, Praserthdam P, React. Kinet. Catal. Lett., 88(1), 65 (2006)
Jongsomjit B, Kittiruangrayub S, Praserthdam P, Mater. Chem. Phys., 105(1), 14 (2007)
