Mobil Oil Corporation

Exxonmobil Chemical Patents Inc.

Kobe Steel, Ltd.

Exxonmobil Oil Corporation

Exxon Research and Engineering Company

Kabushiki Kaisha Kobe Seiko Sho

Mobile Oil Corporation

John P McWilliams

David O Marler

Ajit Bhaskar Dandekar

James C Vartuli

David S Shihabi

Donald J Klocke

Koji Yamamoto

Masahiro Motoyuki

Thomas F Degnan

Michael Hryniszak

Ajit V Sapre

Chaya R Venkat

Maria D Farnos

Thomas Francis Degnan, Jr

Philip Jay Angevine

Wieslaw J Roth

Mae K Rubin

Yung F Chu

Sanjay B Sharma

Catherine T Sigal

Pochen Chu

Ivy Dawn Johnson

Charles Morris Smith

David A Pappal

Yun-Yang Huang

Thomas R Kiliany, Jr

Ronald A Weiss

Robert Glenn Bundens

Susan Patricia Donnelly

Scott S Han

Charles T Kresge

Scott A Stevenson

Quang N Le

Joseph A Herbst

Stephen S Wong

Garry W Kirker

Francis G Dwyer

Richard F Socha

Daria N Lissy

Hye Kyung Timken

Robert P Absil

Joosup Shim

Robert C Wilson, Jr

Thomas R Forbus, Jr

Sowmithri Krishnamurthy

C Morris Smith

Nazeer A Bhore

John D Kushnerick

Lawrence J Altman

Michael Alan Better

Wei-Ping Tai

Margaret I Nemet-Mavrodin

Michael P Nicoletti

Christine H Kursewicz

A process for producing sec-butylbenzene comprises contacting a feed comprising benzene and ethylene under alkylation conditions with catalyst comprising (i) a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4&#xb1;0.25, 6.9&#xb1;0.15, 3.57&#xb1;0.07 and 3.42&#xb1;0.07 Angstrom and (ii) at least one metal selected from Group 10 of the Periodic Table of Elements to produce an alkylation effluent comprising sec-butylbenzene.

Process for producing sec-butyl benzene

The present invention relates to a process of preparingdialkylnaphthylenes and polyalkylenenaphthyleneatesdialkylnaphthalenes and polyalkylenenaphthalates.

Process for preparing 2,6-dialkylnaphthalene

The present invention provides a process for producing an alkylaromatic compound comprising the step of contacting an alkylatable aromatic compound with an alkylating agent under alkylation conditions in the presence of a alkylation catalyst comprising phosphorus and a porous crystalline inorganic oxide material having an X-ray diffraction pattern including the d-spacing maxima at 12.4&#xb1;0.25, 6.9&#xb1;0.15, 3.57&#xb1;0.07 and 3.42&#xb1;0.07 Angstrom.

Aromatics alkylation

A process for producing 2,6-dialkylnaphthalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphthalene isomers, monoalkylnaphthalene isomers, polyalkylnaphthalenes, and naphthalene, is provided that includes the following steps:

In a method for producing monoalkylated aromatic compounds, an aromatic feed is contacted with an alkylating agent in the presence of a catalyst comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4&#xb1;0.25, 6.9&#xb1;0.15, 3.57&#xb1;0.07, and 3.42&#xb1;0.07 Angstrom. The catalyst also contains at least one metal cation selected from Groups 1&#x2013;4 and 7&#x2013;16 of the Periodic Table of Elements, wherein the metal cation is present in an amount of at least 0.5% by weight of the catalyst, whereby selectivity of the catalyst to produce monoalkylates over polyalkylates is improved as compared with the identical catalyst but without the metal cation present.

Aromatic alkylation process

A process for alkylating an alkylatable aromatic compound is disclosed, in which the process includes: The process provides comparable rejuvenation of catalyst activity as air rengenaration with minimal or no increase in amounts of undesirable byproducts such as polypropylbenzenes in the case of benzene alkylation with propylene.

Regeneration of aromatic alkylation catalysts using hydrocarbon stripping

The catalyst becomes at least partially deactivated by sorbing catalyst poisons present in the feed during a process for alkylating aromatics by contacting a feed containing benzene, toluene, xylenes, alkylbenzenes, naphthalene or substituted naphthalenes under liquid phase alkylating conditions with C-Colefins in the presence of MCM-22, MCM-36, MCM-49, MCM-56, ZSM-5, ZSM-11, ZSM-12, ZSM-23, ZSM-35, ZSM-48, ZSM-50, ZSM-4, ZSM-18, ZSM-20, Zeolite X, Zeolite Y, USY, mordenite or offretite to provide an alkylated aromatic product. The at least partially deactivated catalyst can be treated in situ by contacting with at least one polar compound having a dipole moment of at least 0.05 Debyes and selected from the group consisting of acetic acid, formic acid, water, and carbon monoxide, under conditions of temperature and pressure employed in the liquid phase alkylating conditions which are sufficient to at least partially desorb the catalyst poison from the catalyst.

Process for liquid phase aromatics alkylation comprising in-situ catalyst reactivation with polar compounds

A process is described for removing polar compounds from an aromatic feedstock which contains polar compounds. The process comprises contacting the feedstock in an adsorption zone at a temperature of less than or equal to 130&deg; C. with an adsorbent selective for the adsorption of said polar compounds and comprising a molecular sieve having surface cavities with cross-sectional dimensions greater than 5.6 Angstroms. A treated feedstock substantially free of said polar compounds can then be fed to an alkylation zone for contact under liquid phase alkylation conditions with an alkylating agent in the presence of an alkylation catalyst.

Removal of polar contaminants from aromatic feedstocks

A process is described for removing polar compounds from an aromatic feedstock which contains polar compounds and which is then used in an alkylation process. The process comprises contacting the feedstock in an adsorption zone at a temperature of less than or equal to 130&deg; C. with an adsorbent selective for the adsorption of said polar compounds and comprising a molecular sieve having pores and/or surface cavities with cross-sectional dimensions greater than 5.6 Angstroms. A treated feedstock substantially free of said polar compounds is withdrawn from the adsorption zone and fed to an alkylation zone for contact under liquid phase alkylation conditions with an alkylating agent in the presence of an alkylation catalyst.

Removable of polar contaminants from aromatic feedstocks

MCM-56 and MCM-49 have been demonstrated to be effective catalysts for the reduction of nitrogen oxide (NO.sub.x) emissions in a net oxidizing environment such as Selective Catalytic Reduction or lean burn engine exhaust applications. MCM-56 and MCM-49 can be utilized as a component of a spherical or cylindrical catalyst particle or as a wash coat on a ceramic or metallic monolith. Optionally, a transition metal such as copper, can be added to the catalyst for improved activity.

Catalytic reduction of nitrogen oxide emissions with MCM-49 and MCM-56

2,6-Dialkylnaphthalene is prepared from a feedstock comprising naphthalene and an alkylating agent, by a process comprising the steps: (I) transalkylating isomers of dialkylnaphthalene and naphthalene to produce monoalkylnaphthalene and isomers of dialkylnaphthalene; (II) separating the product obtained in step (I) into naphthalene, monoalkylnaphthalene, dialkylnaphthalene and other components; (III) alkylating the monoalkylnaphthalene fraction from step (II) with an alkylating agent to produce dialkylnaphthalene; and (IV) separating 2,6-dialkylnaphthalene from the dialkylnaphthalene fraction in step (II), wherein at least step (I) or step (III) is conducted in the presence of a catalyst having a composition comprising a synthetic zeolite having an X-ray diffraction pattern with an interplanar d-spacing (.ANG.)

Process for preparing dialkylnaphthalene

A process for producing alkylnaphthalene from a feedstock comprising isomers of dialkylnaphthalene and naphthalene by contacting the feedstock with a catalyst composition, in which the process comprising transalkylation between isomers of dialkylnaphthalene and naphthalene to produce monoalkylnaphthalene, and isomerization of dialkylnaphthalene, wherein the catalyst composition comprising a synthetic zeolite characterized by an X-ray diffraction pattern including interplanar d-spacing as set forth in Table A of the specification.

Growing community of inventors

Woodbury, NJ, United States of America

John P McWilliams