Catalyst for producing phthalic anhydride and process by using t

Details Catalyst for producing phthalic anhydride and process by using t Catalyst for producing phthalic anhydride and process by using t

1992-06-30

1993-08-10

Tsang, Cecilia

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549256, 549257, 549258, 549259, 549260, 549249, 502113, 502114, 502179, 502120, 502209, B01J 2714, B01J 2720, C07D30789

Patent

active

052350711

ABSTRACT:
The invention relates to a catalyst for producing phthalic anhydride by gas phase catalytic oxidation of o-xylene and/or naphthalene with molecular oxygen or gas containing molecular oxygen and, to a process for producing phthalic anhydride by using said catalyst. The catalyst is made by supporting, on a heat-resistant inorganic carrier, a catalytic active substance which comprises: vanadium oxide; anatase type titanium dioxide having specific surface area of 10 to 60 m.sup.2 /g; niobium; at least one element selected from potassium, cesium, rubidium and thallium; phosphorus; and antimony. The catalytic active substance is prepared by using a five-valent antimony compound as an antimony source. The process for producing phthalic anhydride comprises use of said catalyst.

REFERENCES:
patent: 3843552 (1974-10-01), Jouy et al.
patent: 3909457 (1975-09-01), Friedrichsen et al.
patent: 3926846 (1975-12-01), Ono et al.
patent: 4046780 (1977-09-01), Nakanishi et al.
patent: 4284571 (1981-08-01), Sato et al.
patent: 4356112 (1982-10-01), Nakanishi et al.
patent: 4436922 (1984-03-01), Kita et al.
patent: 4481304 (1984-11-01), Sato et al.

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