| 掺杂助剂Ce和Zr的Ni/Al2O3催化剂的X光电子能谱分析 |
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| 引用本文： | 蔡秀兰,林维明.掺杂助剂Ce和Zr的Ni/Al2O3催化剂的X光电子能谱分析[J].分析测试学报,2013,32(2):253-256. |
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| 作者姓名： | 蔡秀兰 林维明 |
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| 作者单位： | 1. 广东药学院药科学院,广东广州,510006
2. 广州大学化学与化工学院,广东广州,510006 |
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| 基金项目： | 广东省自然科学基金资助项目（030514）；广东省科技计划项目（2005C34501);广州市氢能与绿色催化重点实验室（广州大学）开放课题基金资助项目（2008121101）；广东药学院博士启动项目 |
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| 摘 要： | 以Na2CO3为沉淀剂,在pH 9.0的沉淀条件下,采用并流沉淀法制备了Ni/Al2O3、Ni/CeO2-Al2O3、Ni/ZrO2-Al2O3和Ni/ZrO2-CeO2-Al2O34种催化剂,催化剂中Ni负载量(质量分数)为10%。采用XPS表征手段及常压固定床反应器对催化剂进行活性评价,考察了助剂Ce和Zr及二者的协同作用对Ni基催化剂表面物种结合能的影响以及对甲烷自热重整制氢反应性能的影响。结果表明,助剂Ce和Zr的添加及二者的协同作用对Ni基催化剂表面各物种的结合能均有一定的影响,结合评价结果可知,Ce和Zr二者的协同作用对Ni基催化剂的催化性能提高最大。
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| 关 键 词： | 甲烷 自热重整 制氢 表面结合能 |
Study on Ni/Al2O3 Catalyst Doped with Ce and Zr by XPS |
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| CAI Xiu-lan
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LIN Wei-ming.Study on Ni/Al2O3 Catalyst Doped with Ce and Zr by XPS[J].Journal of Instrumental Analysis,2013,32(2):253-256. |
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| Authors: | CAI Xiu-lan LIN Wei-ming |
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| Institution: | 1.College of Pharmacy,Guangdong Pharmaceutical University,Guangzhou 510006,China;2.School of Chemistry and Chemical Engineering,Guangzhou University,Guangzhou 510006,China) |
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| Abstract: | Ni/Al2O3,Ni/CeO2-Al2O3,Ni/ZrO2-Al2O3 and Ni/ZrO2-CeO2-Al2O3 catalysts were prepared by co-precipitation method at pH 9.0 and using Na2CO3 as the precipitant.The Ni loading(mass fraction) of the catalyst was 10%.Effects of Ce and Zr on the surface bonding energy of the catalyst were characterized by XPS,and the catalytic performances of the catalysts for the autothermal reforming of methane to hydrogen were investigated by a fixed-bed reactor.The results showed that synergy of Ce and Zr can affect the bond energy of the catalyst,and Ni/ZrO2-CeO2-Al2O3 catalyst possesses the best catalytic activity among the four catalysts. |
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