Mobil Oil Corporation

Steven E Wentzek

Catherine S Chen

David S Shihabi

Mae K Rubin

Hye Kyung Timken

Thomas R Forbus, Jr

Sanjay B Sharma

Dong-ming Shen

Suzanne Elaine Schramm

John L Schlenker

Frank Thomas Diguiseppi

Large crystal ZSM-5, its synthesis and use

A process is disclosed for separating high purity diamondoid fractions from a mixture containing substituted and unsubstituted diamondoid compounds.

Isolation of high purity diamondoid fractions and components

The invention provides a composition comprising Formula I as shown below and at least one selected from the group consisting of Formulae II, III, IV, and V as shown below: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are the same or different, and comprise alkyl groups containing no tertiary carbon and having from about 4 to about 15 carbon atoms. The composition of the invention is useful as a lubricant stock. A method for synthesizing the composition is also disclosed.

Oxidatively stable esters derived from diamondoids totally hydroxylated

The invention provides a composition of matter selected from the group consisting of ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are selected from the group consisting of hydrogen and alkyl substituent groups having from 1 to about 8 carbon atoms, n is from 2 to about 20, m is from 2 to about 20, and Di is a substituted or unsubstituted diamondoid compound. The invention further provides diamondoid-containing ammonium salts, and a pharmaceutical treatment method using the compositions of the invention.

Diamondoid-containing amines

The invention provides a method for synthesizing a porous inorganic solid comprising the steps of: (a) forming a reaction mixture containing water, an alumina source, a silica source, an alkali metal oxide source, and a diquaternary ammonium salt having the formula: ##STR1## wherein R is a diamondoid group, n is from about 1 to about 50, and X is an anion which is not detrimental to the formation of said porous inorganic solid; and

Method for synthesizing microporous crystalline material

A process is disclosed for separating diamondoid compounds from a natural gas stream containing the same comprising the steps of contacting the natural gas stream with a selected solvent and fractionating the sorbed diamondoids from the diamondoid-enriched solvent in a vacuum separation stage in the absence of reflux. Polyalphaolefin solvents are preferred, and polyalphaolefin solvents enriched in C.sub.30 oligomers are more preferred.

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East Brunswick, NJ, United States of America

Steven E Wentzek