Ni-Zr-Al基非晶合金催化剂的苯加氢反应动力学研究

The Reaction Kinetics of Ni-Zr-Al Based Amorphous Alloy Catalyst on Hydrogenation of Benzene

利用快速凝固技术制备了Ｎｉ２３ ．３Ｚｒ６ ．７Ａｌ６４Ｃｕ２．３Ｃｅ３．７（ 原子数分数） 非晶态催化合金，用碱洗抽Ａｌ 的方法加以活化，制成大比表面积Ｎｉ 基非晶合金催化剂，然后在苯加氢反应上测试了其催化性能．结果发现，这种新型催化材料的比活性高出常规Ｒａｎｅｙ Ｎｉ 催化剂３７ ．５ ％ ；反应动力学分析表明，其反应级数对氢基本上表现为一级，反应活化能约为３１ ．２ ｋＪ／ｍｏｌ，低于常规Ｒａｎｅｙ Ｎｉ 催化剂．最后推导出其在苯加氢反应上的动力学方程．

In this paper,Ni 23.3 Zr 6.7 Al 64 Cu 2.3 Ce 3.7 amorphous alloy is prepared by rapid solidification and activated by leaching Al out, Ni-Zr based amorphous catalyst is thus obtained,its BET specific surface area is above 50 m 2/g.The catalytic property on hydrogenation of benzene is then tested.It is found that the specific surface activity of the amorphous catalyst is 37.5% higher than that of the conventionally prepared Raney Ni catalyst.Kinetic analyses show that the reaction class of amorphous catalyst for hydrogen is about one and the reaction activation energy is about 31.2 kJ/mol.Finally,the reaction velocity equation is worked out.