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US 4,227,024 AGranted
Preparation of 2,6-xylenol and catalyst composition useful therefor
AssigneeConoco Inc.
InventorBruce E. Leach
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Abstract
A process for preparing 2,6-xylenol in high selectivity and a catalyst composition useful therein are disclosed. The process comprises reacting phenol, o-cresol or mixtures thereof with methanol in presence of water, hydrogen and a catalyst consisting essentially of Fe.sub.2 O.sub.3, SnO.sub.2, Cr.sub.2 O.sub.3, and K.sub.2 O.
Claims7
A process for preparing 2,6-xylenol in high selectivity wherein the process comprises reacting phenol, o-cresol or mixtures thereof with methanol in the presence of water using a catalyst consisting essentially of the following materials in percent by weight:
- Fe.sub.2 O.sub.3 --about 90 to about 97;
- SnO.sub.2 --about 0.5 to about 5;
- Cr.sub.2 O.sub.3 --about 0.5 to about 5;
- K.sub.2 O--about 0.01 to about 1, said process being characterized further in that:
- (a) prior to use the catalyst has been treated with hydrogen at a temperature of 300.degree. to 500.degree. C. at a flow rate of 2 to 6 volumes of hydrogen per minute per volume of reactor for 2 to 12 hours;
- (b) there is present about 1 to 10 moles of methanol per mole of phenol and/or o-cresol;
- (c) the amount of water is about 5 to about 15 weight percent, based on the total amount of phenol, o-cresol and methanol;
- (d) the amount of catalyst expressed as LHSV is about 0.1 to about 5;
- (e) the temperature is in the range of about 380.degree. to about 420.degree. C.;
- (f) the pressure is from atmospheric to 1,000 psig;
- and
- (g) the product mixture contains at least 99 weight percent o-cresol and 2,6-xylenol.
9 more elements
Dependencies are inferred from the claim text.