负载型镍合金催化剂抗硫，硫中毒再生及电化学性能研究

Amorphous metal alloy catalysts have superior properties in catalysis to traditional metal alloy catalysts. The supported novel amorphous NiB alloy catalysts, developed by the principal of this project, is not crystallized for a long term reaction and can be regenerated if it is deactivated due to carbonaceous species deposition, which are beneficial for the application of the amorphous metal alloy catalysts. With the aid of the National Science Foundation, we proceed to investigate their sulfur resistance and regeneration after sulfur poisoning. The results show that in benzene hydrogenation, amorphous NiB/SiO2 and NiB/Al2O3 catalysts could keep their activities when the feedstock containing 2000ppm of CS2. Up to 20000ppm of CS2, the supported amorphous NiB catalysts are poisoned quickly, but can be easily regenerated. On the other hand, the supported amorphous NiB alloy catalysts are inclined to be poisoned by the thiophenic compounds. When modified with rare earths, their sulfur resistance seems to be enhanced and regeneration becomes easy. Electro-chemical probing shows that nickel has different properties in amorphous NiP alloy as compared to that in amorphous NiB, which indicates that B and P modify the property of nickel through the geometric or electronic way. These findings are helpful to further our understanding in the catalytic behavior and sulfur resistance of the amorphous alloy catalysts, which is essential for the application of amorphous alloy catalysts in industry.

用简易方法负载新型镍合金于合适价廉载体上制成可工业化的高效催化剂，通过硼，稀土元素和其他金属添加剂的电子和结构效用研究其抗硫，除硫和硫中毒再生，判定机理；在将镍系合金膜载于合适材料上制成电极，研究其电化学性质，结合其他仪器结果，考察稀土等元素的作用，从而可在理论上深入研究镍合金催化剂，以提高催化剂的研究水平。