Title: Ruthenium catalyst system and method of stabilizing a ruthenium catalyst system

Abstract: Under oxidizing conditions, a ruthenium catalyst system which is not protected will lose ruthenium by volatilization. A method is taught in this specification for stabilizing a ruthenium catalyst system against such volatilization under oxidizing conditions. The method is carried out by applying to a catalyst substrate a ruthenium catalyst system in which the catalytic material under oxidizing conditions is of the type La.sup.+3 Ni.sub.x.sup.+3 Ru.sub.1-x.sup.+3 O.sub.3 wherein x is in the range from 0.1 to 0.9.

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Inventors: Gandhi, Haren S. (Dearborn Heights, MI, US)
Shelef, Mordecai (Southfield, MI, US)

Application Number: 895195
Filing Date: 1978-04-10
Publication_date: 1979-05-01
Assignee: Ford Motor Company (Dearborn, MI)
Primary Class(es): 502/303 423/213.5, 502/525
Other Classes:
US Patent Ref:

3897367	Jul, 1975	Lauder	252/462.
3901828	Aug, 1975	Mai et al.	252/462.
3907968	Sep, 1975	Kobylinski et al.	423/213.
3972837	Aug, 1976	Acres et al.	252/473.

Other Refs:
Primary Examiner: Shine, W. J.
Assistant Examiner:
Attorney: Johnson; William E., Zerschling; Keith L.