Process for modifying the pore volume distribution of alumina ba

Details Process for modifying the pore volume distribution of alumina ba Process for modifying the pore volume distribution of alumina ba

1975-12-19

1977-01-04

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

423631, B01J 2104

Patent

active

040011445

ABSTRACT:
Modification of the pore volume distribution of an alumina base catalyst support is accomplished by treating an alumina precursor of chi-rho-eta structure with an aqueous ammonium carbonate or bicarbonate solution under pressure at about 100.degree.-160.degree. C for 10-24 hours, followed by drying and thermal activation at a temperature of at least about 500.degree. C. The resulting support will possess more than about 70% of its total pore volume in the 45-300 angstrom unit pore diameter range. This pore volume distribution renders it particularly suitable for use as a catalyst carrier for hydrodesulfurization purposes.

REFERENCES:
patent: 3226191 (1965-12-01), Osment et al.
patent: 3264061 (1966-08-01), Kehl et al.
patent: 3322494 (1967-05-01), Magee et al.
patent: 3325247 (1967-06-01), Magee et al.

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