The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2011
Filed:
Apr. 20, 2007
Robert Quinn, Macungie, PA (US);
Diwakar Garg, Emmaus, PA (US);
Frederick Carl Wilhelm, Zionsville, PA (US);
Terry Lee Slager, Allentown, PA (US);
Robert Quinn, Macungie, PA (US);
Diwakar Garg, Emmaus, PA (US);
Frederick Carl Wilhelm, Zionsville, PA (US);
Terry Lee Slager, Allentown, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
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° C. to about 100° 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.