期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 84, 期 1-2, 页码 223-232出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2008.04.001
关键词
Hydrogen; Solid oxide fuel cell; Autothermal reforming; Simulated gasoline; Bimetallic; Zirconia; Rh-Pt-O ternary system; RhxPt1-x alloy; Rh2O3; Characterization
The behavior of ZrO2-supported RhPt catalysts was studied in the autothermal reforming of simulated gasoline to produce fuel gas (H-2, CO, CO2, CH4, and H2O) suitable for solid oxide fuel cell applications. The bimetallic catalysts were superior to the monometallic Rh and Pt catalysts, and only a small addition of Rh increased the activity of the Pt catalyst markedly. Moreover, the reforming selectivity and the stability of bimetallic RhPt catalysts against carbon deposition improved with increasing Rh/Pt molar ratio. Strong synergism between Rh and Pt was observed, leading to excellent catalytic performance. Based on TPR-, SEM-, and EDX-results a Rh-Pt-O ternary system with RhxPt1-x-Rh2O3 equilibrium is suggested for the bimetallic catalysts, where Rh2O3 is the active site. (C) 2008 Elsevier B.V. All rights reserved.
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