| 李春林,刘涛.三氧化二铝含量对Ni／Zr0.4Ce0.6O2—Al2O3催化剂的CH4—CO2重整反应性能影响[J].分子催化,2001,(5):351-354 |
| 三氧化二铝含量对Ni／Zr0.4Ce0.6O2—Al2O3催化剂的CH4—CO2重整反应性能影响 |
| CO-2 Reforming of CH-4 over Ni/Zr0.4Ce0.6 O2- Al2O3 Catalysts with Different Amounts of Al-2O-3 Prepared by Hydrothermal Method |
| 修订日期：2001-01-03 |
| DOI： |
| 中文关键词: Ni基催化剂 水热合成法 CH4 CO2 铈锆固熔体 Al2O3助剂 甲烷 二氧化碳 催化重整 合成气 镍基催化剂 氧化铝助剂 |
| 英文关键词:Ni\|based catalysts,Hydrothermal method,CO\-2 reforming of methane,CeO\-2\|ZrO\-2 solid solution,Al\-2O\-3 promoter |
| 基金项目:北京市同步辐射装置课题，， |
| 李春林 刘涛 |
| [1]中国科学技术大学化学物理系，安徽合肥230026 [2]中国科学院高能物理研究所，北京100039 |
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| 中文摘要: |
| 采用水热合成法，制备了不同Al2O3含量的Ni/Zr0.4Ce0.6O2-Al2O3催化剂，采用X－射线衍射（XRD）和扩展X光吸收精细结构（EXAFS），对催化剂样品进行结构表征；考察了Al2O3的加入对催化剂结构和CH4－CO2重整反应活性的影响。结构表征和活性测试表明，催化剂中存在的主要晶相是Zr0.4Ce0.6O2.Al2O3的加入，使催化剂颗粒度变小，镍的分散度提高，并使反应活性有明显改进；而过量Al2O3的加入，却容易导致积炭。 |
| 英文摘要: |
| Ni/Zr 0.4 Ce 0.6 O 2\|Al 2O 3 catalysts with different amounts of Al\-2O\-3 were prepared by hydrothermal method and characterized by X\|ray diffraction and EXAFS techniques. The influence of the addition of Al\-2O\-3 on the structure of catalysts and activity of CO\-2 reforming of methane were studied. Characterization and activity test revealed that the main phase for composite oxide of Ce and Zr is Zr 0.4 Ce 0.6 O\-2, the addition of Al\-2O\-3 reduces the size of nickel particles, increases Ni dispersion and markedly improves the reaction activity. The addition of excessive Al\-2O\-3 causes easier carbon deposition. |
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