Process for the preparation of ethylenimine

摘要

A dehydration catalyst and process for making an alkylenimine from an alkanolamine wherein the catalyst contains oxides of either tantalum or niobium together with the oxides of iron and chromium and in which the ratios of the metals are: M10Fe0.5-2.9Cr0.3-1.7 wherein M is tantalum or niobium.