Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1976-07-19
1978-04-25
Vertiz, O. R.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260671C, C07C 352
Patent
active
040862879
ABSTRACT:
A catalytic process is provided for the ethylation of a mono alkyl benzene wherein the alkyl substituent contains 1 or 2 carbon atoms, i.e. toluene or ethylbenzene, to selectively produce the para ethyl derivative thereof, i.e. para ethyltoluene or para diethylbenzene by contacting said mono alkyl benzene, under conversion conditions, with an ethylating agent in the presence of a catalyst comprising a crystalline aluminosilicate zeolite, which zeolite is characterized by an activity, in terms of alpha value, of between about 2 and about 5000, and preferably between about 20 and about 500, a xylene sorption capacity greater than 1 gram/100 grams of zeolite and an ortho xylene sorption time for 30 percent of said capacity of greater than 10 minutes, said sorption capacity and sorption time being measured at 120.degree. C. and a xylene pressure of 4.5 .+-. 0.8 mm. of mercury, said catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index, as hereinafter defined, within the approximate range of 1 to 12 to yield a resulting product in which the para ethyl derivative of said mono alkyl benzene is present in an amount greater than the thermodynamic equilibrium concentration thereof in the total dialkyl substituted benzenes produced.
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Masterton et al., Chemical Principles 2nd Edition, W. B. Saunders, Phila., Pa. (1969) p. 362.
Kaeding Warren W.
Young Lewis B.
Barclay Raymond W.
Hearn Brian E.
Huggett Charles A.
Mobil Oil Corporation
Vertiz O. R.
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