The Boc Group, Inc.

Rudolph J Wolf

Ravi Kumar

Frank R Fitch

Satish S Tamhankar

Divyanshu R Acharya

Mark J Andrecovich

Yongxian Zeng

Shuguang Deng

Martin Bülow

Supported perovskite-type oxides are described. The perovskite-type oxides have the general formula of AA'BB&#x2032;O, wherein A is an ion of a metal of Group IIIa or IIIb of the periodic table of elements or mixtures thereof; A&#x2032; is an ion of a metal of Groups Ia or IIa of the periodic table or mixtures thereof; B and B&#x2032; are ions of a d-block transition metal of the periodic table or mixtures thereof; x, x&#x2032;, y and y&#x2032; vary from 0 to 1; 0.95&#x3c;x+x&#x2032;&#x3c;1.05; 0.95&#x3c;y+y&#x2032;&#x3c;1.05; &#x3b4; is the deviation from ideal oxygen stoichiometry. This invention also provides for the selection of support materials and the shapes of supported perovskite-type oxides as well as the methods for making them.

Supported perovskite-type oxides and methods for preparation thereof

The present invention provides for a multi-composite adsorbent mixture which will remove H O, CO and nitrogen oxides and/or hydrocarbons from a feed gas stream. The improvement lies in the use of a third adsorbent which is selective for nitrogen oxides, hydrocarbons or both.

Purification of gases using multi-composite adsorbent

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Lebanon, NJ, United States of America

Rudolph J Wolf