Process for the preparation of anthraquinone

Details Process for the preparation of anthraquinone Process for the preparation of anthraquinone

1986-07-08

1988-11-01

Hollrah, Glennon H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

502102, 502162, 502168, 502208, 502508, C07C 5018, B01J 2102, B01J 2114, B01J 2702

Patent

active

047818620

ABSTRACT:
Anthraquinone is produced by reacting phthalic anhydride in the vapor phase over a catalyst which may be an oxide of the Group 4b metals zirconium, hafnium, and titanium, the Group 5b metals niobium, tantalum, and vanadium, or the rare earths cerium and thorium such oxides, preferably being treated with sulfuric acid and calcined. Substituted anthraquinones may be produced by employing the corresponding substituted phthalic anhydrides.

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patent: 4379092 (1983-04-01), Devic
patent: 4400324 (1983-08-01), Brima et al.
patent: 4411818 (1983-10-01), Reater et al.
patent: 4444904 (1984-04-01), Ryu
patent: 4459234 (1984-07-01), Kawamato et al.
Kirk-Othmer, Encyclopedia of Chemical Technology 1978, 3rd ed., vol. 2, pp. 702-707.
Hino, J. Chem. Soc., Chem. Commun., 1985, p. 112.

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