Toyota Motor Engineering & Manufacturing North America, Inc.

Blake A Graham

Charles Alexander Roberts

Torin C Peck

Krishna R Gunugunuri

Benjamin Alan Grayson

An oxygen storage material (OSM) includes a zinc manganese iron oxide (ZMF) and an alkali metal base on the ZMF surface. The ZMF has a spinel structure. The alkali metal containing ZMF can be formed to have a weight percent of alkali metal up to about two percent. The alkali metal carbonate is retained on the ZMF surface upon heating to a temperature greater than 1,000&#xb0; C. and stabilizes the ZMF to the cycling of an oxygen rich and oxygen lean atmosphere. The OSM additionally catalyzes the oxidation of hydrocarbons and CO and catalyzes the reduction of NOfor use in catalytic converters.

Zinc manganese-iron spinel with an alkali metal stabilizer as an oxygen storage material resistant to rich/lean aging

Catalyst for oxygen storage capacity applications that include a zinc doped manganese-iron spinel mixed oxide material. The zinc doped manganese-iron spinel mixed oxide material may be synthesized by a co-precipitation method using a precipitation agent such as sodium carbonate and exhibits a high oxygen storage capacity.

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Royal Oak, MI, United States of America

Blake A Graham