Y2Ce2−xRuxO7(x=0 ~ 0.4)的合成及其对乙醇蒸汽重整反应的催化性能

2012 International Conference on Renewable Energy Research and Applications (ICRERA) Pub Date : 2012-11-01 DOI:10.1109/ICRERA.2012.6477426

Yun-sheng Chen, Chi‐Shen Lee

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引用次数: 1

摘要

采用溶胶-凝胶法制备了Y2Ce2-xRuxO7 (x=0~0.4)的焦绿石相固溶体，并将其用作乙醇自热蒸汽重整(AESR)的催化剂。采用粉末x射线衍射(PXRD)、x射线光电子能谱(XPS)和程序升温还原(TPR)对制备的样品进行了表征。通过XPS和TPR分析证实了Ru离子的氧化态。催化活性测试表明，钌含量对Y2Ce2-xRuxO7催化剂的重整性能有影响。优化后的催化剂为y2ce1.6 ru0.47，氢气选择性为SH2 ~98%(自热温度~700℃，乙醇转化率为100%，C/O = 0.6)。

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Synthesis and catalytic performance of Y2Ce2−xRuxO7(x=0∼0.4) on autothermal ethanol steam reforming reaction

Pyrochlore phases of Y₂Ce_2-xRu_xO₇ (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 Y₂Ce_2-xRu_xO₇ catalysts was affected by the Ru ion content. The optimized catalyst was Y₂Ce_1.6Ru_0.4O₇ with hydrogen selectivity S_H2 ~98% (autothermal temperature ~700°C and 100% ethanol conversion at C/O = 0.6).

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2012 International Conference on Renewable Energy Research and Applications (ICRERA)

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