Application of Co/Al2O3 Catalyst in Steam Reforming of Glycerol

Alumina-supported cobalt catalyst has been employed in a fixed bed reactor for the direct production of synthesis gas from glycerol steam reforming. Physicochemical properties of the Co/Al2O3 catalyst were determined from N2 physisorption, H2 chemisorption, CO2 and NH3-TPD study as well as X-ray...

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Main Author: Cheng, C. K.
Format: Conference or Workshop Item
Language:English
Published: 2010
Subjects:
Online Access:http://umpir.ump.edu.my/id/eprint/1695/1/CHEMECA_CCK_AAA_001.pdf
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author Cheng, C. K.
author_facet Cheng, C. K.
author_sort Cheng, C. K.
collection UMP
description Alumina-supported cobalt catalyst has been employed in a fixed bed reactor for the direct production of synthesis gas from glycerol steam reforming. Physicochemical properties of the Co/Al2O3 catalyst were determined from N2 physisorption, H2 chemisorption, CO2 and NH3-TPD study as well as X-ray diffraction analysis. Both Lewis and Brönsted acid sites are present on the catalyst surface. The acid:basic site ratio is about 6. Glycerol conversion of between 30 to 65% with relatively large H2:CO ratio (6 to 12) and near-stoichiometric values of H2:CO2 ratio (2 to 2.20) were obtained depending on feed composition (30 to 60wt% glycerol mixture). The glycerol consumption rate appeared to be a weak function of glycerol (0.1) and has 0.4 order with respect to the steam partial pressure. Increased glycerol partial pressure led to high carbon deposition (TOC values of 20 to 24%). However, removal of the deposited carbon was essentially complete following a TPO(air)-TPR(H2) scheme.
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spelling UMPir16952018-01-11T03:36:29Z http://umpir.ump.edu.my/id/eprint/1695/ Application of Co/Al2O3 Catalyst in Steam Reforming of Glycerol Cheng, C. K. TP Chemical technology Alumina-supported cobalt catalyst has been employed in a fixed bed reactor for the direct production of synthesis gas from glycerol steam reforming. Physicochemical properties of the Co/Al2O3 catalyst were determined from N2 physisorption, H2 chemisorption, CO2 and NH3-TPD study as well as X-ray diffraction analysis. Both Lewis and Brönsted acid sites are present on the catalyst surface. The acid:basic site ratio is about 6. Glycerol conversion of between 30 to 65% with relatively large H2:CO ratio (6 to 12) and near-stoichiometric values of H2:CO2 ratio (2 to 2.20) were obtained depending on feed composition (30 to 60wt% glycerol mixture). The glycerol consumption rate appeared to be a weak function of glycerol (0.1) and has 0.4 order with respect to the steam partial pressure. Increased glycerol partial pressure led to high carbon deposition (TOC values of 20 to 24%). However, removal of the deposited carbon was essentially complete following a TPO(air)-TPR(H2) scheme. 2010 Conference or Workshop Item PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/1695/1/CHEMECA_CCK_AAA_001.pdf Cheng, C. K. (2010) Application of Co/Al2O3 Catalyst in Steam Reforming of Glycerol. In: CHEMECA 2010 , 26 - 29 September 2010 , Hilton Adelaide, South Australia. pp. 1-11.. (Published)
spellingShingle TP Chemical technology
Cheng, C. K.
Application of Co/Al2O3 Catalyst in Steam Reforming of Glycerol
title Application of Co/Al2O3 Catalyst in Steam Reforming of Glycerol
title_full Application of Co/Al2O3 Catalyst in Steam Reforming of Glycerol
title_fullStr Application of Co/Al2O3 Catalyst in Steam Reforming of Glycerol
title_full_unstemmed Application of Co/Al2O3 Catalyst in Steam Reforming of Glycerol
title_short Application of Co/Al2O3 Catalyst in Steam Reforming of Glycerol
title_sort application of co al2o3 catalyst in steam reforming of glycerol
topic TP Chemical technology
url http://umpir.ump.edu.my/id/eprint/1695/1/CHEMECA_CCK_AAA_001.pdf
work_keys_str_mv AT chengck applicationofcoal2o3catalystinsteamreformingofglycerol