Air Products and Chemicals, Inc.

Terry Lee Slager

Diwakar Garg

Xiang-Dong Peng

Robert Quinn

Frederick Carl Wilhelm

Bryan Clair Hoke, Jr

Bryan Clair Hoke

The present invention provides a process for making a complex metal oxide comprising the formula ABO. The process comprises the steps of: (a) reacting in solution at a temperature of between about 75&#xb0; C. to about 100&#xb0; C. at least one water-soluble salt of A, at least one water-soluble salt of B and a stoichiometric amount of a carbonate salt or a bicarbonate salt required to form a mole of a carbonate precipitate represented by the formula AB(CO), wherein the reacting is conducted in a substantial absence of carbon dioxide to form the carbonate precipitate and wherein the molar amount of carbonate salt or bicarbonate salt is at least three times the stoichiometric amount of carbonate or bicarbonate salt required to form a mole of the carbonate precipitate; and (b) reacting the carbonate precipitate with an oxygen containing fluid under conditions to form the complex metal oxide.

Preparation of complex metal oxides

In a process for producing a hydrogen-containing gas, a hydrocarbon feed gas and steam are introduced into a reaction vessel containing a complex metal oxide and steam-hydrocarbon reforming catalyst thereby forming a combustible gas mixture comprising hydrogen. A regeneration gas comprising greater than 0.1 volume % oxygen up to and including 2 volume % oxygen is introduced into the reaction vessel to displace at least a portion of the combustible gas mixture from the reaction vessel. Subsequently, additional regeneration gases may be introduced into the reaction vessel. Numerous means for providing various regeneration gases are presented.

Regeneration of complex metal oxides for the production of hydrogen

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Allentown, PA, United States of America

Terry Lee Slager