Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including means rotating reaction chamber during use
Patent
1983-04-01
1985-11-19
Bernstein, Hiram H.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including means rotating reaction chamber during use
422241, 422245, C30B 7110
Patent
active
045541361
ABSTRACT:
Berlinite crystalline powder of uniform particle size and high purity is prepared by repeated thermal cycling to react a mixture of aluminum hydroxide or aluminum oxide and an excess of concentrated phosphoric acid in a sealed pressure vessel. The vessel is preferably held in a horizontal orientation and rotated about a longitudinal axis during the reaction. The product powder is useful in growing large single crystals that have surface acoustic wave applications. Crystalline powder of alpha-gallium orthophosphate may be prepared using the same apparatus and a similar procedure.
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Buehler Ernest
Chai Bruce H.
Flynn John J.
Allied Corporation
Bernstein Hiram H.
Fuchs Gerhard H,.
Riesenfeld James
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