Abstract: The present status of deactivation and regeneration of titanium silicalite in main catalytic oxidation reactions，such as alkene epoxidation，cyclohexanone ammoxidation，phenol hydroxylation，etc. is reviewed. Pore blocking by reaction byproducts is the main reason for catalyst deactivation，and titanium leaching or silica dissolution is another reason.The present regeneration methods are summarized，and their effects on zeolite structure and catalytic performance are also presented.The research prospect of regeneration of titanium silicalite is discussed.

摘要： 介绍了在烯烃环氧化、环己酮氨肟化、苯酚羟基化等催化氧化反应中钛硅分子筛失活的研究现状，分析了反应副产物堵孔是催化剂失活的主要原因，同时钛流失或硅溶解也是导致催化剂失活的原因之一。总结了钛硅分子筛目前采用的主要再生方法，简述了不同再生过程对催化剂结构与性能的影响。展望了钛硅分子筛再生研究的发展方向。