Process for the preparation of o-cresol and 2,6-xylenol
AssigneeSociete' Italiana Resine S.I.R. S.p.A.
InventorsRoberto Canavesi, Ferdinando Ligorati, Giancarlo Aglietti
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Abstract
0-cresol and 2,6-xylenol are prepared by flowing a gaseous stream of methanol and phenol in a molar ratio of phenol to methanol of from 1:1 to 1:9 through a fluidized bed of alumina particles at a temperature of from 200.degree. to 400.degree. C., said alumina being in the eta, gamma or chi crystallographic form, having a surface area of from 100 to 500 m.sup.2 /g and an overall pore volume of from 0.3 to 0.6 ml/g and having been pre-treated with a stream of air or inert gas at a temperature of the order of 500.degree. C. for at least 2 hours. CROSS REFERENCE TO RELATED APPLICATIONS
Claims7
A method for preparing o-cresol and 2,6-xylenol, which comprises flowing a gaseous stream containing methanol and phenol in a molar ratio of said phenol to said methanol from 1:1 to 1:2, through a fluidized bed of alumina particles from 20 to 100 microns in size, operating at a temperature of from 200.degree. C. to 400.degree. C. the alumina being in the eta (.eta.) crystallographic form, having a surface area of from 100 to 500 m.sup.2 /g and an overall pore volume of from 0.3 to 0.6 ml/g, said alumina having been pre-treated with a stream of air or inert gas at a temperature of from 450.degree. to 550.degree. C. for a period of at least 2 hours.
Dependencies are inferred from the claim text.