Petro-Tex Chemical Corporation

Edward J Miklas

Harold F Christmann

Improved oxidative dehydrogenation catalysts are prepared by modifying a preformed zinc ferrite oxidative dehydrogenation catalyst with zinc oxide. The resulting catalyst compositions exhibit higher conversions and yields.

Modified zinc ferrite oxidative dehydrogenation catalysts in oxidative

Zinc ferrite oxidative dehydrogenation catalyst are activated by the use of only steam.

Activating zinc ferrite oxidative dehydrogenation catalysts

Improved oxidative dehydrogenation catalysts are prepared by modifying a zinc ferrite oxidative dehydrogenation catalyst with magnesium oxide. The resulting catalyst compositions exhibit higher conversions and yields.

Modified zinc ferrite oxidative dehydrogenation catalysts

Method of activating zinc ferrite oxidative dehydrogenation catalysts

Improved zinc ferrite oxidative dehydrogenation catalyst can be prepared by co-precipitating the catalysts from a solution of zinc and iron ions in the presence of a high molecular weight polyhydric material such as dextran in a 2 to 4 normal alkali metal hydroxide solution. The result of having the polyhydric material present is that the precipitate has the form of a granular gelatinous precipitate of improved processability. The catalyst itself is more active in dehydrogenations and physically stronger than comparable catalyst prepared by conventional methods. More importantly, zinc ferrite catalysts prepared in this manner have extremely long useful lives whereas those prepared by conventional methods have very short useful lives.

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Conroe, TX, United States of America

Edward J Miklas