Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Inorganic carbon containing
Patent
1981-11-24
1984-10-02
Konopka, P. E.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Inorganic carbon containing
502182, 570165, 570168, B01J 2326, B01J 2712, B01J 3510, C07C 1700
Patent
active
044748957
ABSTRACT:
This invention relates to improved catalysts for gaseous phase fluorination of aliphatic chlorinated and chlorofluorinated hydrocarbons 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 than 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 than 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 trioxide 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: 2458551 (1949-01-01), Benning et al.
patent: 3157707 (1964-11-01), Clark et al.
patent: 3600450 (1971-08-01), Kaess et al.
patent: 3812028 (1974-05-01), Wennerberg et al.
patent: 4155881 (1979-05-01), Sullivan
Konopka P. E.
PCUK - Produits Chimiques Ugine Kuhlmann
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