Process for the preparation of ferromagnetic chromium dioxide

Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing

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252 6251, 23290, 232905, C01G 3702

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active

040455440

ABSTRACT:
CrO.sub.2 synthesized by the known hydrothermal reaction of CrO.sub.3 /Cr.sub.2 O.sub.3 /H.sub.2 O mixtures (including minor dopants) by the use of a reaction vessel having a hollow longitudinal core open at both ends. The core may have a cross section of convenient size and shape. This process results in shortened heating and cool/vent/dry cycles resulting in increased overall productivity despite the apparent reduced volume of the reaction vessel.

REFERENCES:
patent: 2956955 (1960-10-01), Arthur
patent: 3278263 (1966-10-01), Cox
patent: 3592609 (1971-07-01), Honbo
patent: 3787564 (1974-01-01), Kitamoto et al.

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