Process using a catalyst to dehydrogenate an alkyl aromatic comp

Details Process using a catalyst to dehydrogenate an alkyl aromatic comp Process using a catalyst to dehydrogenate an alkyl aromatic comp

1994-09-21

1996-04-23

Pal, Asok

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

Having alkenyl moiety, e.g., styrene, etc.

585661, 502304, C07C 5333

Patent

active

055105521

ABSTRACT:
A process using a particular catalyst in the dehydrogenation of an alkyl aromatic compound, e.g., ethylbenzene, to form a vinyl aromatic compound, e.g., styrene. The catalyst comprises a calcination product of (a) at least one iron oxide; (b) at least one carbonate, bicarbonate, oxide or hydroxide of potassium and/or cesium; (c) an oxide, carbonate, nitrate or hydroxide of cerium, or a mixture of at least two thereof; (d) an hydraulic cement; (e) an hydroxide, carbonate, bicarbonate, acetate, oxalate, nitrate, or sulfate of sodium, in an amount sufficient to provide from 0.2 to 10 percent sodium, calculated as sodium oxide, by weight of the calcined catalyst; and (f) a carbonate, sulfate, or hydroxide, of calcium or a mixture of at least two thereof, in an amount sufficient to provide from 1.5 to 20 percent calcium, calculated as calcium oxide, by weight of the calcined catalyst. The catalyst has improved moisture stability compared to catalysts in which at least one of (e) or (f) is not met.

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United Catalysts, Inc., G-64 & G-84 Product Bulletin, Girdler, CCI and Houdry Catalysts, pp. 1-17.

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