Arco Chemical Technology, L.p.

Thomas I Evans

Lawrence J Karas

Rajendra S Albal

Ramesh Rameswaran

David W Leyshon

Stephen Herbert Harris

Bernard Cooker

W Wayne Wentzheimer

Morris Gelb

Robert L Cannon

Allen M Donn

Wayne Wentzheimer

Allen Donn

A process is provided for the production of a gasoline blending fraction rich in isooctane by the dimerization of isobutylene using tertiary butyl alcohol modifier and lower alkane diluent; advantageously the isobutylene is derived from the dehydration of tertiary butyl alcohol.

Selective olefin oligomerization

A propylene oxide/styrene monomer aqueous purge stream is contacted with a solid iron promoted alumina catalyst at conditions effective to decompose peroxides contained therein.

Purification process

A process is provided for the production of a gasoline blending fraction rich in isooctane by the dimerization of isobutylene using tertiary butyl alcohol modifier and isoalkane diluent; advantageously the isobutylene is derived from the dehydration of tertiary butyl alcohol and the isoalkane used as diluent in the dimerization is the product formed by hydrogenation of the oligomerization product.

Isobutylene oligomerization using isooctane diluent

An aqueous epoxidation process stream containing molybdenum and sodium values is incinerated and an aqueous solution containing molybdenum and sodium is recovered, acidified and reacted with a calcium compound without first adding base to form solid CaMoO.sub.4 which is separated.

Molybdenum epoxidation catalyst recovery

An aqueous epoxidation process stream containing molybdenum and sodium values and organics is treated for organics removal as by incineration and an aqueous solution containing molybdenum and sodium is recovered, cooled, acidified and contacted with activated carbon and an aqueous stream reduced in molybdenum is recovered, further molybdenum reduction can be achieved by treatment with basic ion exchange resin.

The waste organics containing caustic stream from a propylene oxide/styrene monomer process is preferably first concentrated by distillation and then contacted with strong acid such as sulfuric acid and an organic solvent, the admixture is phase separated and an aqueous sodium containing phase reduced in organics is separated from an organic solvent phase reduced in sodium.

Acidification/extraction treatment of waste caustic stream

An aqueous epoxidation process stream containing molybdenum and sodium values and organics is treated for organics removal as by incineration and an aqueous solution containing molybdenum and sodium is recovered, acidified and reacted with a calcium compound to form solid CaMoO.sub.4 which is separated.

Epoxidate from the molybdenum catalyzed epoxidation of an olefin such as propylene with a hydroperoxide such as ethylbenzene hydroperoxide is treated with 2 to 15 times the stoichiometric equivalent of aqueous base such as sodium hydroxide to form Na.sub.2 MoO.sub.4 and the resulting mixture is phase separated to separate an organic phase reduced in molybdenum and a net aqueous stream containing removed molybdenum, the mass ratio of the organic phase to the net aqueous stream being 450-3,000/I.

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Glenmoore, PA, United States of America

Thomas I Evans