Document Type and Number:
Japanese Patent JPS5170195
Kind Code:
A
Abstract:
A catalyst which is suitable as an oxidation catalyst, especially in the preparation of naphthoquinone or phthalic anhydride from naphthalene and molecular oxygen and which contains the elements Si, V, S, O and at least one alkali metal, is obtained by employing silicic acid having a mean grain size of < 50 mu m and an alkali metal content of < 2% by weight, calculated as Na2O and based on SiO2. The vanadium, the sulphur and the oxygen can be added in the form of a sulphuric vanadyl oxalate solution. The aqueous mixture is then dried at from 50 to 200 DEG C, and is heated to a higher temperature or calcined if required.
Inventors:
MANFURETSUTO MARUCHIN
BARUTAA SHUMITSUTO
GERUHARUTO SHARUFUE
BARUTAA SHUMITSUTO
GERUHARUTO SHARUFUE
Application Number:
JP13317975A
Publication Date:
June 17, 1976
Filing Date:
November 07, 1975
Export Citation:
Assignee:
BAYER AG
International Classes:
B01J23/22; B01J27/02; C07B61/00; C07C45/00; C07C46/04; C07C50/12; C07D307/89; C07C51/31; C07C67/00; (IPC1-7): B01J23/22; B01J27/04; C07C47/54; C07C49/66; C07C49/74; C07C63/16
Domestic Patent References:
| JP42013713A |