Thermally stable, shaped alumina catalyst carriers

Details Thermally stable, shaped alumina catalyst carriers Thermally stable, shaped alumina catalyst carriers

B - Operations, Transporting

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B01J 35/02 (2006.01) B01J 20/08 (2006.01) B01J 21/04 (2006.01)

Patent

CA 1049483

ABSTRACT OF THE DISCLOSURE Thermally stable, shaped alumina catalyst carriers are made by treating an alumina shape of pre- dominantly chi-rho-eta or pseudoboehmite crystalline phase structure, or mixtures thereof, with an ammonium salt in an aqueous medium under pressure within the temperature range of about 100°C and 250°C, followed by removal of water-leachable constituents and a subsequent thermal activation step. The products exhibit high thermal stability at elevated temperatures.

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