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| 稀土对非晶态NiB合金催化剂性能的影响 | |
| 引用本文： | 李凤仪,石秋杰,罗来涛,王祥生.稀土对非晶态NiB合金催化剂性能的影响[J].中国稀土学报,1999,17(4):338-341. |
| 作者姓名： | 李凤仪 石秋杰 罗来涛 王祥生 |
| 作者单位： | 1. 南昌大学近代应用化学研究所,南昌,330047 2. 南昌大学近代应用化学研究所,南昌,330047;华南理工大学化工系,广州,510641 3. 大连理工大学碳资源综合利用开放实验室,大连116012 |
| 基金项目： | 江西省自然科学基金!（972015），国家教委大连理工大学碳资源综合利用开放实验室资助!项目（97001K） |
| 摘 要： | 研究了Ｅｕ，Ｇｄ，Ｔｂ对化学还原法制备非晶态ＮｉＢ合金催化剂的加氢及抗硫性能的影响。Ｅｕ，Ｇｄ，Ｔｂ的加入可提高ＮｉＢ合金的催化活性和抗硫性。其原因是稀土元素与ＮｉＢ合金间存在的相互作用。ＮｉＢ合金催化剂的活性中心与还原态的镍及镍＝硼－氧物种有关。 |
| 关 键 词： | 稀土 非晶态合金 催化剂 性能 硼化镍合金 |
Effects of Rare Earths on Properties of Amorphous NiB Alloy Catalyst |
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| Li Fengyi,Shi Qiujie,Luo Laitao,Wang Xiangsheng.Effects of Rare Earths on Properties of Amorphous NiB Alloy Catalyst[J].Journal of the Chinese Rare Earth Society,1999,17(4):338-341. | |
| Authors: | Li Fengyi Shi Qiujie Luo Laitao Wang Xiangsheng |
| Abstract: | Amporphous NiB and NiBRE alloys were prepared by chemical reduction method. The effects of Eu, Gd, Tb on the catalytic activity and sulfur resistance of amorphous NiB alloy were studied. Results indicate that the addition of a small amount of RE improves the activity and sulfur resistance of amorphous NiB alloy because of the interaction between RE and NiB alloy. It makes the oxided nickel species and Ni B O species reduced more easily and difficultly, which increases the number of active sites. It also changes the strength of absorbing bond and decreases the activation energy for benzene hydrogenation over NiB alloy. The results also indicate that the active sites of NiB alloy are related to the reduced nickel species and Ni B O species. |
| Keywords: | Rare earths Amorphous NiB alloy Benzene hydrogenation reaction Surface character |
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