Process for the alkylation of aromatic compounds
AssigneeEnichem S.p.A.
InventorsOscar Cappellazzo, Gianni Girotti, Massimiliano Pollastri, Sergio Lombardini, Domenico Piccininno
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Abstract
Process for the alkylation of aromatic compounds by the reaction of the aromatic compound of interest with isopropanol, alone or mixed with propylene, wherein the reaction is carried out in the presence of a catalytic composition based on zeolite, under mixed gas-liquid phase conditions or under completely liquid phase conditions, at such temperature and pressures that the concentration of water in the reaction liquid phase is not higher than 8,000 ppm w/w, regardless of the total water content present in the reaction mixture.
Claims47
A process comprising alkylation of an aromatic compound by reaction of the aromatic compound with isopropanol, alone or mixed with propylene, in the presence of a catalytic composition comprising a zeolite, under mixed gas-liquid phase conditions or under completely liquid phase conditions, at such temperature and pressures that the concentration of water in the reaction liquid phase is not higher than 8,000 ppm, regardless of the total water content present in the reaction mixture.
A process comprising alkylation of an aromatic compound by reaction of the aromatic compound with isopropanol, alone or mixed with propylene, in the presence of a catalytic composition comprising a zeolite, under mixed gas-liquid phase conditions or under completely liquid phase conditions, at such temperature and pressures that the concentration of water in the reaction liquid phase is not higher than 8,000 ppm, regardless of the total water content present in the reaction mixture, wherein the zeolite is a porous crystalline material having the composition:
- [(x/n)M(1±0.1−x)TEA]AlO2.ySiO2.wH2O
- wherein
- n is the oxidation state of M,
- x is less than 1,
- y ranges from 5 to 100,
- w is from 0 to 4,
- M is a metal selected from groups IA, IIA, and IIIA of the Periodic System, and transition metals, and
- TEA is tetraethylammonium.
Dependencies are inferred from the claim text.