Patent ID: 6262325
Filing Date: 2001-07-17
Classification: B01J,C07C,Y10S

Abstract:
A catalyst comprising at least one alkali metal on a support which has the general formula (I)A.sub.n' Ti.sub.m' Zr.sub.p' Hf.sub.q' O.sub.n'+2(m'+p'+q') (I)whereA is a divalent metal,20.multidot.(m'+p'+q')>n'>0.05.multidot.(m'+p'+q'),and which may be doped with at least one compound of an alkali metal and/or alkaline earth metal,where the alkali metal/support ratio by weight is 0.01-5:1 and, when a dopant is present, the dopant/support ratio by weight is 0.01-5:1, and where the proportion of support phase corresponding to a ZrO.sub.2 structure or an alkaline earth metal oxide structure or consisting of ZrO.sub.2 or alkaline earth metal oxide is less than 10% by weight.