Method of making .alpha.-hematite catalyst

Details Method of making .alpha.-hematite catalyst Method of making .alpha.-hematite catalyst

1981-09-21

1983-07-12

Shine, W. J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252472, B01J 2104, B01J 2374

Patent

active

043929915

ABSTRACT:
Disclosed is a method of making an .alpha.-hematite catalyst comprising condensing a ferric halide gas such as ferric chloride onto an inert metal oxide support such as alumina in the presence of moisture. The ferric chloride gas could be formed by reacting in iron source such as hematite with hydrogen chloride gas. The catalyst formed is less subject to erosion and is useful in the reduction of sulfur trioxide to sulfur dioxide.

REFERENCES:
patent: 2723904 (1955-11-01), Reeve
patent: 3428575 (1969-02-01), Pijpers et al.
patent: 3888750 (1975-06-01), Brecher et al.
patent: 4003850 (1977-01-01), Callighan et al.

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