Mobil Oil Corporation

Other

Sharp Kabushiki Kaisha Corporation

Virginia Tech Intellectual Properties, Inc.

Pradyot A Agaskar

Robert K Grasselli

David Lawrence Stern

John G Tsikoyiannis

P Thomas Reischman

James N Michaels

Seshu B Desu

Tracy J Huang

Chien-Hsiung Peng

May Nyman

Tian Shi

The present invention provides a process for alkylating an olefin with an isoparaffin comprising contacting an olefin-containing feed with an isoparaffin-containing feed with a solid catalyst comprising zeolite Beta having a silica:alumina ratio in the as-synthesized state of less than about 18.

Isoparaffin-olefin alkylation process

The chemical vapor deposition of hydridospherosiloxane to generate films of SiO.sub.2 at low temperatures on substrates that cannot withstand high temperatures. The chemical vapor deposition process synthesized compounds with the general formula,

Production of films of SiO.sub.2 by chemical vapor deposition

There is provided a process for the net catalytic oxidative dehydrogenation of alkanes to produce alkenes. The process involves simultaneous equilibrium dehydrogenation of alkanes to alkenes and combustion of the hydrogen formed to drive the equilibrium dehydrogenation reaction further to the product alkenes. In the present reaction, the alkane feed is dehydrogenated over an equilbrium dehydrogenation catalyst in a first reactor, and the effluent from the first reactor is then passed into a second reactor containing a reducible metal oxide which serves to selectively combust hydrogen in an oxidation/reduction (REDOX) reaction. This particular mode of operation is termed a separate reactor, REDOX mode.

Process for the catalytic dehydrogenation of alkanes to alkenes with

The present invention provides a composition of matter having the formula

Vanadium (IV)-containing nasicon materials

There is provided a process for the net catalytic oxidative dehydrogenation of alkanes to produce alkenes. The process involves simultaneous equilibrium dehydrogenation of alkanes to alkenes and combustion of the hydrogen formed to drive the equilibrium dehydrogenation reaction further to the product alkenes. In the present reaction, the alkane feed is passed into a reactor containing both an equilibrium dehydrogenation catalyst and a reducible metal oxide, whereby the alkane is dehydrogenated and the hydrogen produced is simultaneously and selectively combusted in oxidation/ reduction (REDOX) reaction with the reducible metal oxide. This particular mode of operation is termed a same reactor, REDOX mode. The equilibrium dehydrogenation catalyst may comprise platinum and the reducible metal oxide may contain bismuth, antimony, indium, or molybdenum, or a mixture thereof.

There is provided a process for the net catalytic oxidative dehydrogenation of alkanes to produce alkenes. The process involves simultaneous equilibrium dehydrogenation of alkanes to alkenes and combustion of the hydrogen formed to drive the equilibrium dehydrogenation reaction further to the product alkenes. In the present reaction, the alkane feed is dehydrogenated over an equilbrium dehydrogenation catalyst in a first reactor, and the effluent from the first reactor, along with oxygen, is then passed into a second reactor containing a metal oxide catalyst which serves to selectively catalyze the combustion of hydrogen. This particular mode of operation is termed a separate reactor, cofed oxygen mode. The equilibrium dehydrogenation catalyst may comprise platinum and the selective metal oxide combustion catalyst may contain bismuth, antimony, indium, molybdenum, or a mixture thereof.

Vanadium (IV)-containing NASICON materials

A method and apparatus for the synthesis of .beta.-diketonates such as Pb(fod).sub.2 and Pb(thd).sub.2 for use as precursors in metalorganic chemical vapor deposition processes. Lead oxide and a medium of pentane and a protonated ligand (H-fod or H-thd) are combined in a flask and subjected to reaction-promoting ultrasonic waves. The flask is immersed in a water bath to maintain a constant cool temperature, and the flask may include one or more arms for cooling and circulation of the medium during the reaction.

Method and apparatus for synthesizing lead .beta.-diketonates

Hydridospherosiloxanes and soluble hydrogensilsesquioxane resin are produced having the formula (HSiO.sub.3/2).sub.n, where n is an even integer greater than 8. A biphasic reaction medium is prepared, having a first solvent phase and a second solvent phase. The first solvent phase can contain a hydrocarbon solvent, such as an alcohol. The first solvent phase can be methanol or ethanol. The second solvent phase is a concentrated solution of a metal salt, such as Fe(III) in a polar organic solvent and water. A silicon compound represented by the formula: HSiX.sub.3, where X is a group which is hydrolyzable in the solvent of said first solvent phase, is added to the biphasic reaction medium. X can be Cl or OCH.sub.3. The first solvent phase is separated from the second solvent phase and then the separated first solvent phase is treated with a metal salt, such as sodium or potassium carbonate. Slow evaporation of the first solvent phase solvent is employed to isolate a mixture of crystals of (HSiO.sub.3/2).sub.8, and (HSiO.sub.3/2).sub.10. The crystal mixture is washed with a hydrocarbon solvent and crystals of (HSiO.sub.3/2).sub.8 are isolated.

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Lawrenceville, NJ, United States of America

Pradyot A Agaskar