Chemistry of hydrocarbon compounds – Aromatic compound synthesis – Having alkenyl moiety – e.g. – styrene – etc.
Patent
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.
Dellinger Phillip W.
Moore Rebecca G.
Sherrod Fred A.
Smith Allen R.
Pal Asok
The Dow Chemical Company
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