Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By condensation of entire molecules or entire hydrocarbyl...
Patent
1980-06-09
1984-02-21
Davis, Curtis R.
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By condensation of entire molecules or entire hydrocarbyl...
585467, C07C 268
Patent
active
044331878
ABSTRACT:
Para-xylene is selectively prepared by reacting toluene and a methylating agent in the presence of a phosphorus modified catalyst comprising a silica polymorph intermixed with an inorganic refractory oxide, said catalyst having an alkali content of less than about 1.3 milliequivalents per gram as available alkali.
REFERENCES:
patent: 3941871 (1976-03-01), Dwyer et al.
patent: 4002698 (1977-01-01), Kaeding
patent: 4025572 (1977-05-01), Lago
patent: 4038211 (1977-07-01), Frampton
patent: 4061724 (1977-12-01), Grose et al.
patent: 4064070 (1977-12-01), Harrison
patent: 4073865 (1978-02-01), Flanigen et al.
Davis Curtis R.
Sandford Dean
Union Oil Company of California
Williams Cleveland R.
Wirzbicki Gregory F.
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