3669906 is referenced by 15 patents and cites 5 patents.

There is provided a catalyst for the purification of exhaust gases from industrial processes and motor vehicles by combustion of oxidizable impurities contained therein to carbon dioxide and water and removal of nitrogen oxide at elevated temperatures in contact with air consisting essentially of a calcined mixture of eta and gamma aluminum oxide and heavy metal oxide compounds the element chromium and at least one other heavy metal selected from the group consisting of nickel or copper with nickel, the quantity of such heavy metal oxide compounds being 55 to 90 weight percent, the molar proportion of the chromium to the other heavy metal being between about 1:0.5 and 1:2.5 calculated as oxides and the majority of the particles of the heavy metal oxide compounds being of a size of from 0.5 to 5 .mu., whereby the heavy metal oxide compounds have been formed by precipitating chromium from a solution of ammonium bichromate with a soluble salt of said other heavy metal or metals, and whereby said calcining of said mixture having been done at 400.degree.-800.degree. C., preferably in an oxygen-containing atmosphere.

Catalyst for purification of exhaust gases from motor vehicles and industrial plants
Application Number
Publication Number
Application Date
August 19, 1970
Publication Date
June 13, 1972
Lakatos Eduard
Koberstein Edgar
Deutsche Gold und Silber Scheideanstalt Vormats Roessler
B01j 11/22
B01j 11/06
B01J 23/76
B01J 23/86
B01J 23/34
B01J 23/26
B01D 53/94
B01J 23/16
B01D 53/34
B01D 53/86
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