Compositions – Preservative agents – Anti-oxidants or chemical change inhibitants
Patent
1982-12-15
1983-09-13
Gantz, Delbert E.
Compositions
Preservative agents
Anti-oxidants or chemical change inhibitants
252465, 252470, 252474, 585445, B01J 2308, B01J 2316
Patent
active
044041233
ABSTRACT:
Para-ethyltoluene dehydrogenation catalyst compositions and processes for using such catalysts are provided. The catalyst compositions comprise a catalytically active iron compound, e.g., iron oxide; a potassium catalyst promoter, e.g., potassium carbonate; an optional chromium compound stabilizer, e.g., chromic oxide, and a gallium compound, e.g., gallium trioxide. Utilization of particular amounts of gallium compound in dehydrogenation catalyst compositions of this type will provide a catalyst especially suitable for promoting the selective dehydrogenation of para-ethyltoluene to form para-methylstyrene with sustained catalyst activity, with minimized aromatic ring loss and with minimal formation of popcorn polymer from the reaction effluent. su
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Gantz Delbert E.
Kenehan, Jr. Edward F.
McKillop Alexander J.
Mobil Oil Corporation
Powers, Jr. James F.
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