Stabilized magnesia and its use in catalytic processes

Abstract From the Canadian patent

Catalytically active compositions comprising in a substantially homogeneous phase magnesia and a trivalent-metal moiety (e.g. aluminium) wherein the Mg/trivalent-metal molar ratio is above 3. Method for the preparation of above-indicated compositions by means of calcination of a precursor which has been prepared by mixing the solutions of a magnesium salt and a trivalent metal salt with a basic aqueous solution under controlled conditions (e.g. substantially constant pH and temperature). Process for the isomerisation of olefins wherein use is made of a catalytically active composition as described hereinabove.