Exxonmobil Research and Engineering Company

Exxonmobil Chemical Patents Inc.

Exxonmobile Research and Engineering Company

William G Borghard

Stephen John McCarthy

Chuansheng Bai

Jean Willem Beeckman

William Ernest Lewis

Heather A Elsen

Adrienne J Thornburg

Arthur W Chester

Stephen J Mccarthy

James C Vartuli

John Scott Buchanan

Doron Levin

David Lawrence Stern

Jeffrey S Beck

Ajit Bhaskar Dandekar

Dominick N Mazzone

Sylvain S Hantzer

Rustom Merwan Billimoria

Robert A Crane

Jeffrey T Elks

Hyung Suk Woo

Tahmid I Mizan

El-Mekki El-Malki

Glenn R Sweeten

Virginia M Reiner

Carrie L Kennedy

Birbal Chawla

Jon M McConnachie

Sanket K Desai

Zhigou Hou

Owen C Feeley

John C Fried

Cody R Cole

Niveen S Ismail

Systems and methods for the separation of classes of paraffins from a hydrocarbon sample can include a first column comprising a first zeolite adsorbent material for the isolation of one or more n-paraffins from the hydrocarbon sample and generation of a first eluate including one or more iso-paraffins and one or more one-ring or multi-ring naphthenes. The system can further include a second column, coupled to the first column, comprising a second zeolite adsorbent material for the isolation of one or more iso-paraffins or one-ring naphthenes from the first eluate and generation of a second eluate including one or more multi-ring naphthenes.

Systems and methods for separating classes of paraffinic compounds

Systems and methods are provided for pretreatment and upgrading of crude bio oils for further processing and/or use as fuel products. Crude bio oils can be treated by one or more of flash fractionation and thermal cracking to generate fractions suitable for further processing, such as further hydroprocessing. Blending of crude bio oil fractions with mineral feeds can also be used to reduce metals contents to levels suitable for refinery processing.

Crude bio oil pretreatment and upgrading

Bulk catalysts that include a Group VI metal, a Group VIII metal, and at least 10-60% of an organic compound based component are formed. The bulk catalysts have increased stability through the use of a stabilizer in the organic compound based component, the use of an improved gas phase sulfidation, or a combination thereof. The bulk catalysts are suitable for hydroprocessing of hydrocarbon feeds.

Catalysts having increased stability

Exemplary embodiments of the present invention relate to the processing of hydrocarbon-containing feedstreams in the presence of an interstitial metal hydride containing catalyst comprising a surface, and a Group VI/Group VIII metal sulfide coated onto the surface of the interstitial metal hydride. The catalysts and processes of the present invention can improve overall hydrogenation, product conversion, as well as sulfur reduction in hydrocarbon feedstreams.

Interstitial metal hydride catalyst systems and associated processes

Exemplary embodiments of the present invention relate to the processing of hydrocarbon-containing feedstreams in the presence of an active catalyst component comprising a surface, and a metal oxide film coated on the surface of the active catalyst component. The catalysts and processes of the present invention can improve overall hydrogenation, product conversion, as well as improved resistance to catalytic deactivation due to sulfur and nitrogen compounds present in the hydrocarbon feedstreams.

Poison resistant catalyst systems and associated processes

Methods for hydroprocessing of hydrocarbon feedstocks, including hydrodesulfurization and hydrodenitrogenation, using rejuvenated supported metallic catalysts are provided. The supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, are rejuvenated by a process making use of these metals, an organic complexing agent, and optionally an organic additive. The rejuvenation includes stripping and regeneration of a spent or partially spent catalyst, followed by impregnation with metals and at least one organic compound. The impregnated, regenerated catalysts are dried, calcined, and sulfided.

Hydroprocessing using rejuvenated supported hydroprocessing catalysts

Methods for rejuvenation of supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, making use of these metals, an organic complexing agent, and optionally an organic additive, are provided. The rejuvenation includes stripping and regeneration of a spent or partially spent catalyst, followed by impregnation with metals and at least one organic compound. The impregnated, regenerated catalysts are dried, calcined, and sulfided. The catalysts are used for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.

Regeneration and rejuvenation of supported hydroprocessing catalysts

The present invention is a method to activate a noble metal complex dispersed on a catalyst support comprising calcining in hydrogen in order to decompose and reduce the noble metal complex in a single step. In a preferred embodiment, the noble metal catalyst is a combination of platinum and palladium and the noble metal complexes are the hydroxides.

Single step decomposition and activation of noble metal complexes on catalytic supports

A method of ex-situ activation and dry passivation of supported noble metal catalysts including the steps of reducing in the presence of hydrogen and dry passivation by cooling in an inert atmosphere and exposing to air or by filling the pores of the catalyst with a low sulfur oil before exposing to air.

Ex-situ reduction and dry passivation of noble metal catalysts

In a process for preparing a selectivated catalyst composition useful in the disproportionation of toluene, a catalyst comprising an acidic molecular sieve is contacted with a boron compound at a temperature in excess of 500&#xb0; C.; and the resultant catalyst is then contacted with a medium containing hydrogen ions to at least partially restore the acid activity of the molecular sieve.

Selectivation of molecular sieve catalysts and use therof in hydrocarbon conversion

The invention relates to a composition of matter comprising at least one metal from Group 3, at least one metal from Group 4, sulfur and oxygen, particularly useful as a catalyst for ether decomposition to alkanols and alkenes.

Mixed metal oxide containing sulfur

A method is disclosed for modifying a catalytic molecular sieve for shape-selective hydrocarbon conversions comprises:

High temperature calcination of selectivated molecular sieve catalysts for activity and diffusional modification

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Haddon Heights, NJ, United States of America

William G Borghard