Exxonmobil Research and Engineering Company

Exxon Mobil Chemical, Inc.

Jeffrey M Dysard

Andrzej Mariusz Malek

Stuart Leon Soled

James C Vartuli

Sabato Miseo

Gabor Kiss

Ramesh Gupta

Edward Stanley Ellis

Gordon Frederick Stuntz

William Ernest Lewis

Andrzej Malek

Thomas R Halbert

Joseph Ernest Baumgartner

Jonathan Martin McConnachie

Christine Esther Kliewer

Jennifer Schaefer Feeley

Gary L Casty

Steven T Ragomo

Zhigou Hou

Andrzel Malek

John Peter Greeley

Thomas Risher Halbert

James Clarke Vartuli

William Joseph Tracy

A three-step process of removing sulfur from naphtha feeds. The steps include a first hydrotreating step, a mercaptan removal agent and an adsorbent containing a reactive metal on an inorganic support. Step one removes at least 95 wt. % of the sulfur compounds while preserving at least 50 wt. % of the olefins. Treatment with the mercaptan removal agent lowers the sulfur content to 30 wppm total sulfur and final naphtha product contains leas than 10 wppm total sulfur.

Process for removing sulfur from naphtha

The present invention is directed to processes for preparing supported metal catalysts comprising one or more catalytically active metals applied to a porous catalyst support and to processes that use such catalysts. The process requires the formation of an organic complex during the manufacture of the catalyst which after its formation is either partially or fully decomposed before reduction if the metal to form the catalyst. The catalysts have high levels of metal dispersion and uniform distribution of catalytically active metals on the support. The catalysts obtained form the processes are particularly effective in catalysing Fischer-Tropsch reactions and as adsorbants for the removal or organosulfur compounds from hydrocarbons.

Methods for preparing catalysts

Refractory or hard sulfur found in a hydrocarbon stream containing refractory sulfur heterocycle compounds, particularly those exhibiting steric hindrance, is removed from the stream by contacting it with a sodium reagent comprising a sodium component, having free sodium, supported on a solid support component. If the hydrocarbon stream contains more labile or easy sulfur, then it is treated, typically by hydrodesulfurization, to remove at least most of the labile sulfur before it is contacted with the sodium reagent. This is useful for bringing the sulfur level of middle distillate fuel streams, such as diesel and jet fuel fractions, down to a level of less than about 10 wppm, employing conventional hydrodesulfurizing catalysts and conditions.

Desulfurizing organosulfur heterocycles in feeds with supported sodium

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Michigan City, IN, United States of America

Jeffrey M Dysard