Spray drying monocarboxylate mixtures
AssigneeW. R. Grace & Co.-Conn.
InventorJacob Block
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Abstract
An aqueous solution of the monocarboxylates of Y, Ba, and Cu is spray dried, providing a contaminant-free non-hygroscopic product which is homogeneous at the atomic level. In a preferred embodiment Y, Ba, and Cu acetates are used in a molecular ratio of 1:2:3, giving a product which can be calcined to give a superconducting mixed oxide, YBa.sub.2 Cu.sub.3 O.sub.x, where x is 6.8-7.0.
Claims4
Spray-dried, free flowing, non-hygroscopic particles consisting essentially of a homogeneous mixture of monocarboxylates of Y, Ba, and Cu, said monocarboxylates being selected from the group consisting of formates, acetates, propionates, and butyrates.
Dependencies are inferred from the claim text.