METALS-CONTAINING ZEOLITES, A PROCESS FOR PREPARING SUCH ZEOLITES AND THEIR USE IN CATALYTIC PROCESSES

摘要

Zeolites comprising a metal function A and a metal function B wherein function A comprises an alkali metal moiety and function B comprises at least one metal moiety of a metal of Group VIB, VIIB or VIII, which zeolites have a Si/Al atomic ratio of at least 3 and a A/Ao value of at most 0.05 whilst the alkali/aluminium atomic ratio is between 0.6 and 1.1. The zeolites can be suitably prepared by solid state exchange of the appropriate alkali metal containing zeolites and are useful in as catalysts or catalyst carriers in catalytic processes such as the oligomerisation of alkenes.