Title :
Synthesis and catalytic performance of Y2Ce2−xRuxO7(x=0∼0.4) on autothermal ethanol steam reforming reaction
Author :
Yun-sheng Chen ; Chi-Shen Lee
Author_Institution :
Dept. of Appl. Chem., Nat. Chiao Tung Univ., Taipei, Taiwan
Abstract :
Pyrochlore phases of Y2Ce2-xRuxO7 (x=0~0.4) solid solutions were prepared with the sol-gel process and used as catalysts for the autothermal steam reforming of ethanol (AESR). The as-prepared samples were characterized with powder X-ray diffraction (PXRD), X-ray photoelectron spectra (XPS) and temperature-programmed reduction (TPR). The oxidation state of Ru ions was confirmed by XPS and TPR analyses. Tests of catalytic activity showed that the reforming performance of Y2Ce2-xRuxO7 catalysts was affected by the Ru ion content. The optimized catalyst was Y2Ce1.6Ru0.4O7 with hydrogen selectivity SH2 ~98% (autothermal temperature ~700°C and 100% ethanol conversion at C/O = 0.6).
Keywords :
X-ray diffraction; X-ray photoelectron spectra; catalysts; cerium compounds; hydrogen economy; oxidation; ruthenium compounds; sol-gel processing; steam reforming; yttrium compounds; AESR catalysts; PXRD; TPR analysis; X-ray photoelectron spectra; XPS; Y2Ce2-xRuxO7; autothermal ethanol steam reforming reaction; catalytic performance; hydrogen selectivity; optimized catalyst; oxidation state; powder X-ray diffraction; pyrochlore phases; sol-gel process; solid solutions; temperature-programmed reduction; Ethanol; Hydrogen; Ions; Metals; Oxidation; Solids; X-ray diffraction; Autothermal ethanol steam reforming; Ruthenium; pyrochlore; solid solution;
Conference_Titel :
Renewable Energy Research and Applications (ICRERA), 2012 International Conference on
Conference_Location :
Nagasaki
Print_ISBN :
978-1-4673-2328-4
Electronic_ISBN :
978-1-4673-2329-1
DOI :
10.1109/ICRERA.2012.6477426
