| Sm2O3对Ni/海泡石催化剂的改性研究 |
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| 引用本文： | 罗来涛,李松军,邓庚凤. Sm2O3对Ni/海泡石催化剂的改性研究[J]. 中国稀土学报, 2002, 20(1): 77-80 |
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| 作者姓名： | 罗来涛 李松军 邓庚凤 |
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| 作者单位： | 南昌大学应用化学研究所,江西,南昌,330047 |
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| 基金项目： | 国家自然科学基金资助项目 ( 2 986 30 0 2 ) |
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| 摘 要： | 采用浸渍法制备了一系列的Ni-Sm/海泡石催化剂，以二氧化碳甲烷化为探针反应，TPR，XPS及CS2中毒为手段，研究了Sm2O3对Ni/海泡石催化剂的改性机制。结果表明，Sm2O3的加入提高了Ni/海泡石催化剂的加氢活性和抗毒能力，增加了表面镍原子的分散度及催化剂的活性原子数；Sm2O3的影响既有电子效应，又有几何效应，但以电子效应为主。
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| 关 键 词： | 稀土 镍催化剂 海泡石 钐 改性 浸渍法 二氧化碳 甲烷化 |
| 文章编号： | 1000-4343(2002)01-0077-04 |
| 修稿时间： | 2001-01-09 |
Study on Modification of Sm2O3 for Ni/Sepiolite Catalyst |
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| Abstract: | A series of Ni Sm/sepiolite catalysts were prepared by impregnation. The modification of Sm 2O 3 for Ni/sepiolite were investigated by TPR, XPS and CS 2 poison, respectively. The results indicate that the addition of Sm 2O 3 increases the activity of hydrogenation, anti poison capacity, and improves the dispersion of nickel atoms over support and amount of active nickel atoms of catalyst. Besides, it also reveals that effect of Sm 2O 3 on Ni/sepiolite catalyst includes not only electronic effect but also steric effect, whereas electronic effect seems to be principal. |
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| Keywords: | rare earths Ni catalyst sepiolite samarium |
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