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US 2010/0145121 A1Published application
Synthesis of propylbenzene from toluene and ethylene
AssigneeAlbemarlee Corporation
InventorsStephen E. Belmont, Robert W. Nelson, Christopher A. Curtis
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Abstract
Methods are provided for producing alkylbenzenes, such as propylbenzene, from aromatics, such as toluene, and alkenes, such as ethylene. Such methods comprise combining the toluene with about 100 ppm to about 350 ppm water and alkali metal catalyst, activating the catalyst at about 18O° C. to about 220° C., adding the ethylene and conducting the synthesis reaction at about 130° C. to about 15O° C.
Claims4
A method comprising:
- (a) combining at least
- aromatic hydrocarbon having an active hydrogen on a saturated alpha-carbon,
- water in an amount such that the water content is in the range of more than 100 ppm to about 350 ppm based on the content of the water and the aromatic hydrocarbon, and
- alkali metal
- to form a mixture;
- (b) maintaining the mixture at about 180° C. to about 220° C. for at least about 30 minutes;
- (c) cooling the mixture to about 150° C. to about 130° C.;
- (d) combining at least the mixture and alkene to form a reaction mixture;
- (e) maintaining the reaction mixture at about 130° C. to about 150° C. for longer than about 1 hour while agitating the reaction mixture at about 150 psig to about 300 psig;
- and
- (f) producing alkylbenzene.
8 more elements
A method comprising:
- (a) combining at least
- toluene,
- water in an amount such that the water content is in the range of more than 100 ppm to about 350 ppm based on the content of the water and the toluene, and
- sodium-potassium alloy
- to form a mixture;
- (b) maintaining the mixture at about 180° C. to about 200° C. for at least about 30 minutes;
- (c) cooling the mixture to about 150° C. to about 130° C.;
- (d) combining at least the mixture and ethene to form a reaction mixture;
- (e) maintaining the reaction mixture at about 130° C. to about 150° C. for longer than about 1 hour while agitating the reaction mixture at about 150 psig to about 300 psig;
- (f) producing propylbenzene.
7 more elements
Dependencies are inferred from the claim text.