Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Inorganic carbon containing
Patent
1981-11-24
1983-11-29
Wright, William G.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Inorganic carbon containing
570165, 502217, B01J 2702
Patent
active
044180047
ABSTRACT:
This invention relates to improved catalysts for gaseous phase fluorination of aliphatic chlorinated and chlorofluorinated derivatives by hydrofluoric acid. The catalysts are characterized by an active carbon support having a total specific surface area greater than about 1000 m.sup.2 /g but less then about 2000 m.sup.2 /g, a surface area of pores of 40 to 50 .ANG. in radius above about 5 m.sup.2 /g but less then about 15 m.sup.2 /g, a surface area of pores greater than or equal to 250 .ANG. in radius above about 2 m.sup.2 /g but less than about 6 m.sup.2 /g, which has been impregnated with an aqueous chromium sulfate solution and dried. This invention also relates to gaseous phase fluorination processes for chlorinated or chlorofluorinated derivatives utilizing these catalysts in fluidized bed reactors.
REFERENCES:
patent: 2110369 (1938-03-01), Leicester
patent: 2115874 (1938-05-01), Rehm
patent: 2210369 (1940-08-01), Herbst
patent: 2458551 (1949-01-01), Benning et al.
patent: 3600450 (1971-08-01), Kaess et al.
PCUK - Produits Chimiques Ugine Kuhlmann
Wright William G.
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