聚钛氨烷—铂—锰双金属络合物催化的苯酚选择性氢化反应的研究

A Study of Silica-Supported Polytitazane-Pt-Mn Bimetallic Complex in the Selective Hydrogenation of Phenol

摘要: 制备了二氧化硅负载的聚钛氨烷－铂－锰双金属络合物。结果表明，该催化剂在常温常压下对苯酚具有较高的催化氢化活性和选择性，在双金属络合物中，缺电子的锰离子作为Ｌｅｗｉｓ酸吸附点对环己酮分子中的羰基具有很强的吸附能力，可明显抑制环己酮在铀金属表面的吸附和进一步氢化，环己酮在终产物中的含量可达４９．２％，研究了Ｎ／Ｐｔ／Ｍｎ摩尔比，反应温度，时间和溶剂等对催化活性及选择性的影响，此催化剂有良好的稳定性，重

Abstract: A new kind of inorganic polymer, viz. silica-supported polytitazane(Ti-N), and its platinum-manganese bimetallic complex(Ti-N-Pt-Mn) were prepared. It was found that the complex was a very active and selective catalyst in the hydrogenation of phenol to cy