| 摘要 |
PURPOSE:To stably produce desired cyclic amines highly selectively at a high yield for a long period of time by effecting the vapor phase intramolecular dehydration reaction of alkanol amines by using a catalyst consisting of lanthanoid elements and/or actinoid element and specific bond of P, O. CONSTITUTION:The titled catalyst is constituted of the catalyst compsn. expressed by the formula XaPbOc (X denotes 1 or more kinds of elements selected from the lanthanoid elements and/or actinoid elements of periodic table, a-c denote atomic ratios of the respective elements, b=0.01-6 when a=1, c is the numerical value determined by the bonding condition of a, b and various constituting elements). The alkanol amines expressed by formula I (R, R' are selected from H, methyl groups and ethyl groups, n is an integer in a 2-5 range) are converted to the cyclic amines expressed by formula II (R, R' are the same as in formula I). As a result, the desired cyclic amines are highly selectively and stably produced at a high yield. |
