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The catalytic ethylation of benzene with ethanol in the gaseous phase

✍ Scribed by Cullinane, N. M. ;Chard, S. J. ;Meatyard, R.

Publisher
Wiley (John Wiley & Sons)
Year
1948
Weight
146 KB
Volume
67
Category
Article
ISSN
0368-4075

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✦ Synopsis

Abstract

Mixtures in varying proportions of benzene and ethyl alcohol were led over catalysts of the alumina‐silica and alumina type at different temperatures. The best yields of ethylbenzene (about 25%, based on the tenzene consumed) were obtained with the former catalysts, the optimum temperature being) 350Β°.

Ethylbenzene is an important intermediate for the production of styrene, which is widely used for conversion into synthetic rubber and resins. Recently a large number of catalytic methods for the ethylation of benzene have been published, especially in the U.S.A.

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C2F5 radicals were generated in the presence of benzene vapor by the reaction (C2FsCO)20 + hv -+ CO + C02 + 2CzFs The radicals react with the benzene by addition and pseudo H abstraction The rate constant k a d d for the addition reaction ( 7) is given by where e = 2.303RT cal/mole and k , is the