烃类化合物炔键选择加氢Pd-Pb/CaCO3催化剂的研究

用正交试验研究了喹啉、催化剂、温度等因素对炔键选择加氢的影响．方差分析及显性检验结果表明喹啉添加量与催化剂用量之间的配比对炔烃氢化反应的选择性有重大影响．并利用二元表和二元图得到了优化的反应条件．不同还原方法的尝试说明水合肼也是一种好的还原剂．两种浸渍方法的对比表明．用双浸渍法制备的钯催化剂选择加氢性能整体优于常规浸渍法制备的催化剂，当浸渍比为1：1时选择性最好．并对该现象进行了讨论．

Study on Pd-Pb/CaCO3 Catalyst for Selective Hydrogenation of Acetylenic Link in Hydrocarbon

Influence of quinoline,catalyst,temperature and so on,on selective hydrogenation of acetylenic link was investigated with orthogonal test method.The results of analysis of variance and test of significance indicate that,mixing different doses of quinoline and catalyst do cause obvious difference in hydrogenation selectivity of alkynes.Then the optimal reaction condition is established by bipartite graph.The trial of different reductive methods explains that hydrazine hydrate is also a kind of good reducing agent.Comparison of the double impregnation method (DI) with the conventional impregnation method (CI) shows that the properties of the catalyst prepared by DI method are better than those prepared by CI method.Ensuing improvement of semihydrogenation selectivity was found and discussed.