Shell Oil Comapny

Union Carbide Chemicals & Plastics Technology Corporation

Peter Anthony Kilty

Thomas F Brownscombe

Thomas C Forschner

Michael Wayne Potter

Robert P Nielsen

Michael Philip Zum-Mallen

A process for the separation of a mixture of a titanium tetrahalide, a reaction diluent of an intermediate boiling point and at least one of a titanium alkoxide, ester or complex thereof without the aid of a distinct separation solvent by subjecting the mixture to a first distillation step to separate the titanium tetrahalide as the lights component and subjecting the heavies product to a second distillation step to recover a portion of the reaction diluent as the lights component.

Titanium separation process

A process for the removal of soluble selenium from aqueous media comprising contacting the aqueous media with a porous support material having exchanged thereon metal ions selected from transition metal ions, alkali earth metal ions and mixtures thereof.

Removal of selenium from aqueous media

When supported silver materials are being prepared, deposits of ionic, higher alkali metals, i.e., ionic potassium, rubidium, cesium or combinations thereof on porous supports with surface areas ranging from 0.1 to 7 square meters per gram prior to the deposit of silver improves the selectivity of these materials as catalysts for ethylene oxide. Optimal concentrations of the ionic, higher alkali metals are directly proportional to the surface area of the support.

Process for preparing an ethylene oxide catalyst

An improved process for the production of ethylene oxide by catalytic oxidation of ethylene is disclosed wherein reactant ethylene and an oxygen-containing gas are passed through a reaction zone containing a fixed catalyst bed comprising a supported silver catalyst, optionally diluted with an inert refractory particulate, at ethylene oxide forming conditions and the reaction product formed thereby is passed through a cooling zone adjacent to the reaction zone which is filled with an inert refractory particulate, whereby at least partial cooling of the reaction product is effected. In this improved process, the isomerization of ethylene oxide product to acetaldehyde and concomitant yield losses of ethylene oxide are substantially reduced by the use of an inert refractory particulate material having a surface area of 0.1 m.sup.2 /g or less in the cooling zone and, optionally, as an inert diluent in the catalyst bed of the reaction zone.

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Houston, TX, United States of America

Peter Anthony Kilty