Catalyst for preparing chlorine from hydrogen chloride

Details Catalyst for preparing chlorine from hydrogen chloride Catalyst for preparing chlorine from hydrogen chloride

1995-11-03

1998-01-13

Caldarola, Glenn

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502344, 502345, 423502, 423507, B01J 2326, B01J 2304, B01J 2372, C01B 704

Patent

active

057079196

ABSTRACT:
A method for preparing an improved catalyst for use in the preparation of chlorine by the oxidization of hydrogen chloride with an oxygen-containing gas. The catalyst mainly comprises chromium oxide and can be used for a long period of time particularly under low oxygen content conditions, and the activity of the catalyst does not easily deteriorate, and in other words, the catalyst has a long life. Furthermore, there are disclosed the catalyst obtained by this preparation method, and a method for preparing chlorine from hydrogen chloride by the use of the catalyst. The method for preparing the improved catalyst comprises adding copper, an alkali metal and a rare earth metal, or adding chromium, copper, an alkali metal and a rare earth metal to a catalyst containing chromium oxide as a main component, and then calcining the catalyst at a temperature of 800.degree. C. or less.

REFERENCES:
patent: 4828815 (1989-05-01), Kiyoura et al.
patent: 5093292 (1992-03-01), Yoshikawa et al.
patent: 5112593 (1992-05-01), Itoh et al.

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