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2 209 769

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IPC

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Application

2001111499/12, 2001-04-25

(24)

Start date

2001-04-25

(22)

Actual filing date

2001-04-25

(45)

Published

2003-08-10

(72)

Inventor

Zuev M.G.Ignat'Eva N.I.

(73)

Holder

Institut Khimii Tverdogo Tela Ural'Skogo Otdelenija Ran

METHOD FOR PREPARING VB GROUP METAL COMPLEX OXIDES OF MENDELYEEV'S PERIODIC SYSTEMS OF ELEMENTS Russian patent published in 2003 - IPC

Abstract RU 2209769 C2

FIELD: inorganic chemistry, chemical industry. SUBSTANCE: metal oxide of VB group, for example, V2O5, Nb2O5 or Ta2O5 is stirred with alkaline metal oxalate, for example, Na2C2O4. Mixture is placed into platinum crucible and heated in furnace under vacuum 10-2-10-3 mm of mercury column up to 625-650 C for 8-9 h. Prepared product is cooled in common with the furnace obtaining monophase substances. Invention allows preparing complex metal oxides of VB group of different composition, for example, being metal of VB group shows different oxidation degrees in the corresponding complex oxide, for example, ratio V4+/V5+ is 0.319-0.326 and ratio Nb4+/Nb5+ = 0.01. EFFECT: simplified method, expanded assortment of complex oxides prepared. 4 ex

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RU 2 209 769 C2

Authors

Zuev M.G.

Ignat'Eva N.I.

Dates

2003-08-10—Published

2001-04-25—Filed

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