Lyondell Chemical Technology, L.p.

Debra L Jackson

Sandor M Nagy

Barbara Kimmich

Daniel F White

Roger A Grey

Ilya Nifant'ev

Pavel V Ivchenko

Xueyong Yang

Ha H Nguyen

Anthony S Dearth

Nicholas Bruschi

Ilya E Nifant'ev

Justin E Turner

Jenny M Oran Osment

Dan D Lindsey

James D Montano-Lawrence

A method including contacting an organic stream with water and carbon dioxide, whereby sodium is extracted from the organic stream, and separating an aqueous sodium salt-containing phase from an organic phase comprising a reduced sodium content. The organic stream can be a heavy residue formed in the co-production of propylene oxide and styrene. Contacting can include combining the carbon dioxide with the water to form a CO-saturated water stream and contacting the CO-saturated water stream with the organic stream, and/or combining the organic stream and the water to form a mixture and injecting the carbon dioxide as a gas thereinto. The method can further include repeating the contacting and the separating one or more times on the organic phase, subjecting the organic phase to ion exchange, or both, to obtain an organic phase having a further reduced sodium content. A system for carrying out the method is also provided.

Waste stream upgrading in a propylene oxide/styrene coproduction process

A catalyst composition which comprises titanium, wherein part of the titanium is present as a titanium dioxide phase and at least some of the titanium dioxide phase is in the brookite polymorphic form is provided. In some embodiments, the catalyst also comprises a silica support which exhibits a high surface area and pore volume. Methods of preparing the catalyst and its use in an epoxidation reaction are also provided.

Catalysts containing specific titanium polymorphic forms

Method of preparing epoxidation catalysts are disclosed, including methods comprising reacting an inorganic siliceous solid with a metal complex of the formulas: wherein the variables are defined herein.

Complexes useful as active components in supported epoxidation catalysts

A method of preparing epoxidation catalysts is disclosed. The method comprises: (a) adding an inorganic siliceous solid to a column to produce a solid-filled column; (b) adding to the solid-filled column a solution comprising titanium tetrachloride and a hydrocarbon solvent to produce a titanium tetrachloride-impregnated solid; and (c) calcining the titanium tetrachloride-impregnated solid at a temperature from 500&#xb0; C. to 1000&#xb0; C. to produce the catalyst. The inorganic siliceous solid has a pore volume of at least 0.8 cm/g.

Method of preparing epoxidation catalysts

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Huffman, TX, United States of America

Debra L Jackson