PROCESS FOR THE EPOXIDATION OF OLEFINS

摘要

The present invention refers to a process for the catalytic epoxidation of olefins in the presence of a titanium containing zeolite catalyst and a pola r solvent whereby the deactivation of the catalyst upon recycling of the solve nt has been considerably reduced. In the process one or more nitrogen containin g compounds are introduced at some stage, a solvent stream is recovered, treat ed to contain less than 50 wppm nitrogen in the form of organic nitrogen compounds and at least a part of it is recycled to the epoxidation step. The invention is also directed towards a process for the catalytic epoxidation o f propene which integrates the inventive treatment and recycle of the solvent into the workup of the reaction mixture.