Process for dehydrogenating hydrocarbons and oxygenated hydrocar

Details Process for dehydrogenating hydrocarbons and oxygenated hydrocar Process for dehydrogenating hydrocarbons and oxygenated hydrocar

1994-05-31

1996-08-13

Pal, Asok

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

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

585445, 585629, 585630, C07C 5333

Patent

active

055457878

ABSTRACT:
A continuous process for the dehydrogenation of a hydrocarbon and/or oxygenated hydrocarbon feed, comprising contacting the hydrocarbon and/or oxygenated hydrocarbon feed with a dehydrogenation catalyst at elevated temperature in a reaction zone characterized in that the catalyst is capable of retaining hydrogen and (a) is contacted with a feed to form a dehydrogenated product and hydrogen, at least some of the hydrogen formed being adsorbed by the catalyst and/or reacting therewith to reduce at least part of the catalyst; (b) the dehydrogenated product and any unadsorbed/unreacted hydrogen is removed from the reaction zone; (c) at least some of the adsorbed hydrogen is removed from the catalyst and/or at least some of the reduced catalyst is oxidized; and (d) reusing the catalyst from step (c) in step (a).

REFERENCES:
patent: 3679773 (1972-07-01), Kovach et al.
patent: 3894110 (1975-07-01), Drehman
patent: 4327238 (1982-04-01), Eastman
patent: 4675465 (1987-06-01), Fanelli et al.
patent: 4769509 (1988-09-01), Josefowicz
Chem. Abstract 114:130165r "High Resolution Electron Microscopy of Ceria-Supported Catalysts" Jan. 3, 1990.
Carberry "Chemical and Catalytic Reaction Engineering" (1976) McGraw-Hill, pp. 362-365, 394-397, 434-437.
Cochrane et al "High resolution electron microscopy of ceria-supported catalysts", Ultramicroscopy, vol. 34 (1990) pp. 10-16 (North-Hollend).

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