Pre-reforming of liquefied petroleum gas on supported ruthenium catalyst

Cylindrical shaped CeO2-Al2O3 support was prepared by calcining the pelleti zed powder mixture of cerium carbonate, aluminum hydroxide and poly-vinylal cohol. The specific surface area and porosity of the support were improved relative to those obtained by a conventional method. Ru was loaded on the p orous carrier by using ruthenium trichloride and aqueous ammonia. The dispe rsion of Ru. was improved 2.2 fold as much as that in the case using a conv entional catalyst. The improved catalyst showed high activity for pre-refor ming of liquefied petroleum gas (LPG) with low proportion of S/C as 0.8 at 450 degreesC. Finally, 7000 h of sustained run of the pre-reforming was suc cessfully achieved on that catalyst. (C) 2001 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.