Exxonmobil Research and Engineering Company

Celanese International Corporation

Jun Han

Valery Sokolovskii

David M Lowe

Anthony F Volpe

Alfred Hagemeyer

Daniel Mark Giaquinta

Chuansheng Bai

Barbara F Kimmich

Yumin Liu

Ioan Nicolau

Tao Wang

Karin Yaccato

Leslie E Wade

Victor Wong

Michel A Daage

Lei Zhang

Christine Nicole Elia

Jon M McConnachie

Jeff Elks

Stuart Leon Soled

Stephen Harold Brown

Sabato Miseo

Alfred Gerhard Hagemeyer

Jean Willem Beeckman

Jason Wu

Mohan Kalyanaraman

Zhiguo Hou

Nicholas L Ohler

El-Mekki El-Malki

Pallassana S Venkataraman

Thomas R Halbert

Jonathan Martin McConnachie

Peter W Jacobs

Kay S Faaberg

Darden Sinclair

Gongping Liu

Yue Wang

Prasenjeet Ghosh

Zhigou Hou

Robert A Crane

Anthony F Volpe, Jr

El-Mekki El Malki

Prasanna Joshi

Jeffrey Thomas Elks

David Michael Lowe

Nicholas Ohler

Thomas Risher Halbert

Ei-Mekki El-Malki

Dan Giaquinta

Stephen John Mccarthy

Jon M Mcconnachie

Jonathan Martin Mcconnachie

Catalysts for dewaxing of hydrocarbon feeds, particularly feeds with elevated sulfur and nitrogen levels, are provided. The dewaxing catalysts include a zeolite with a low silica to alumina ratio combined with a low surface binder, or alternatively the formulated catalyst has a high ratio of zeolite surface area to external surface area.

Sour service dewaxing catalyst without separate hydrogenation function

The present invention addresses at least four different aspects relating to catalyst structure, methods of making those catalysts and methods of using those catalysts for making alkenyl alkanoates. Separately or together in combination, the various aspects of the invention are directed at improving the production of alkenyl alkanoates and VA in particular, including reduction of by-products and improved production efficiency. A first aspect of the present invention pertains to a unique palladium/gold catalyst or pre-catalyst (optionally calcined) that includes rhodium or another metal. A second aspect pertains to a palladium/gold catalyst or pre-catalyst that is based on a layered support material where one layer of the support material is substantially free of catalytic components. A third aspect pertains to a palladium/gold catalyst or pre-catalyst on a zirconia containing support material. A fourth aspect pertains to a palladium/gold catalyst or pre-catalyst that is produced from substantially chloride free catalytic components.

Layered support material for catalysts

A method for hydrodesulfurizing FCC naphtha is described. More particularly, a Co/Mo metal hydrogenation component is loaded on a silica or modified silica support in the presence of organic ligand and sulfided to produce a catalyst which is then used for hydrodesulfurizing FCC naphtha. The silica support has a defined pore size distribution which minimizes olefin saturation.

Selective catalysts having silica supports for naphtha hydrodesulfurization

Catalysts for dewaxing of hydrocarbon feeds, particularly feeds with elevated sulfur and nitrogen levels, are provided. The dewaxing catalysts include at least two zeolites, including a zeolite with a low silica to alumina ratio. The catalysts may be combined with a low surface binder, or alternatively the catalysts as formulated may have a high ratio of zeolite surface area to external surface area.

Multiple molecular sieve catalyst for sour service dewaxing

Bulk metallic catalysts comprised of a Group VIII metal and a Group VIB metal and methods for synthesizing bulk metallic catalysts are provided. The catalysts are prepared by a method wherein precursors of both metals are mixed and interacted with at least one organic acid, such as glyoxylic acid, dried, calcined, and sulfided. The catalysts are used for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.

Bulk group VIII/group VIB metal catalysts and method of preparing same

Supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, and an organic additive, and methods for synthesizing supported metallic catalysts are provided. The catalysts are prepared by a method wherein precursors of both metals are mixed and interacted with at least one organic additive, dried, calcined, and sulfided. The catalysts are used for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.

High activity supported distillate hydroprocessing catalysts

Halide free precurors for catalysts

Rhodium containing catalysts

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Sunnyvale, CA, United States of America

Jun Han