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:
Jan. 27, 1998
Filed:
Feb. 29, 1996
Michael Francis Carolan, Allentown, PA (US);
Paul Nigel Dyer, Allentown, PA (US);
Stephen Andrew Motika, Kutztown, PA (US);
Patrick Benjamin Alba, Bath, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
The present invention presents a new class of multicomponent metallic oxides which are particularly suited toward use in fabricating components used in solid-state oxygen separation devices. The compositions of the present invention are represented by the formula Ln.sub.x A'.sub.x' A'.sub.x' B.sub.y B'.sub.y' B'.sub.y' O.sub.3-z, wherein Ln is an element selected from the f block lanthanides, A' is selected from Group 2, A' is selected from Groups 1, 2 and 3 and the f block lanthanides, and B,B',B' are independently selected from the d block transition metals, excluding titanium and chromium, wherein 0.ltoreq.x<1, 0<x'<1, 0.ltoreq.x'<1, 0<y<1.1, 0<y'<1.1, 0<y'<1.1, x+x'+x'=1.0, 1.1>y+y'+y'>1.0 and z is a number which renders the compound charge neutral wherein such elements are represented according to the Periodic Table of the Elements adopted by IUPAC. These compositions provide superior resistance to degradation when employed in such devices under process conditions of high carbon dioxide and water partial pressures.