Exxonmobil Chemical Patents Inc.

Georges M K Mathys

Stephen Harold Brown

Jihad Mohammed Dakka

Raphael Frans Caers

Hans K T Goris

John Stephen Godsmark

Marc P H Puttemans

Eddy Theophile Van Driessche

Hubertus Joseph Beckers

Geraldine Tosin

Roger Eijkhoudt

Luc R M Martens

Paul Hamilton

Bruce R Cook

Marcel Johannes Janssen

Marcel J G Janssen

John Richard Shutt

Stephen Wayne Beadle

J Richard Shutt

Machteld Maria Mertens

Robert James Saxton

Jane C Cheng

Jon E Stanat

Allen David Godwin

Jean Willem Beeckman

Ramzi Yanni Saleh

Johan Adriaan Martens

Helge Jaensch

Machteld M W Mertens

An Verberckmoes

David Wayne Turner

Charles Morris Yarbrough

Hailian Li

Carolyn B Duncan

Mechilium J G Janssen

Cesar M Cheng-Guajardo

Ernest E Green

Luc Rm Martens

Eddy Theophile Andrea Van Driessche

Cesar M Cheng Guajardo

Sourav Saha

Joris Franken

Luc M R Martens

Stephen H Brown

Embodiments of an invention disclosed herein relate to particles made from zeolite catalysts and their use in oligomerization processes. In particular, shaped particles (for example, spheroid particles) are made from compositions including the contact product of at least one zeolite catalyst and at least one binder.

Particles including zeolite catalysts and their use in oligomerization processes

Embodiments of an invention disclosed herein relate to processes utilizing solvent extraction to remove nitrogen containing compounds and optionally other components from feedstreams of olefins and paraffins.

Processes utilizing solvent extraction

An olefin oligomerization process comprises contacting an olefin feed with a catalyst composition. The catalyst composition includes a crystalline aluminosilicate having FAU, EMT or a combination of FAU and EMT framework type. The crystalline aluminosilicate has cobalt and at least one alkaline earth metal selected from calcium, barium, strontium and mixtures thereof within its intra-crystalline cages.

Olefin olegomerization process

The invention relates to an olefin oligomerization process comprising the steps of: i) contacting a feed comprising olefins and nitriles with a guard bed comprising eta alumina; and ii) contacting the feed obtained in step i) with an oligomerization catalyst under conditions suitable to oligomerize the olefins in the feed. It also relates to the use of a guard bed comprising eta-alumina for reducing the content of basic organic compounds in a hydrocarbon feed.

Olefin oligomerization process

The present invention provides an olefin oligomerization process comprising the steps of: i) reducing the level of acetonitrile in an olefin feed by contacting the feed with a non-zeolitic metal oxide; and ii) contacting the olefin feed with reduced level of acetonitrile with an olefin oligomerization catalyst under conditions suitable to oligomerize the olefin.

The conversion and run length for oligomerization of olefins over a molecular sieve catalyst in a tubular reactor is improved by controlling the peak temperature to not exceed 50 degrees C. above the temperature of the temperature control fluid exiting the shell side outlet of the reactor. A tubular reactor containing molecular sieve catalyst is provided with a multipoint thermocouple in at least one tube, and optionally with a bottom design adapted for fast unloading of the molecular sieve catalyst from the tubular reactor.

Oligomerisation of olefins with zeolite catalyst

Water reacts on molecular sieve catalysts used in oligomerization reactions and forms oxygenated compounds, in particular organic acids that may cause corrosion problems downstream of the reactor, in particular in distillation tower overhead systems and downstream thereof. A lowering of the presence of water in the feed prior to contacting thereof with the molecular sieve brings a significant reduction in corrosion downstream. At the same time, it has a significant beneficial effect on catalyst activity and brings a significant extension of catalyst life. Lowering water in the feed is particularly effective when organic nitrogen-containing Lewis bases are present in the feed, even at low levels.

Low corrosion in zeolite oligomerisation

The selectivity of an olefin epoxidation process catalyzed by a heterogeneous catalyst for example titanium silicalite is improved by performing the epoxidation in the presence of carbon dioxide. The catalysts used do not require regeneration on each recycle.

Oxidation process in the presence of carbon dioxide

Sulphur-containing olefinic feedstocks are oligomerized over zeolite catalysts.

Oligomerization and catalysts therefor

A selectivated molecular sieve, e.g., ZSM-22 or ZSM-23, is used as olefin oligomerization catalyst to provide product, e.g., octenes and dodecenes from butene, having a low degree of branching and hindered double bonds.

Oligomerization of olefins

Limiting the sulphur level in olefin feedstocks to zeolite-catalysed oligomerization enhances selectivity to trimer and catalyst life and activity.

Olefin oligomerization

In a process for oligomerizing an olefinic hydrocarbon feedstock comprising sulfur-containing molecules, the feedstock is contacted in the absence of hydrogen with a first metal oxide catalyst at a temperature in excess of 150&#xb0; C. and then is contacted under olefin oligomerization conditions with a second catalyst comprising a crystalline molecular sieve, such as ZSM-22 or ZSM-57.

Oligomerization process

A method of making a higher olefin product from a Cfraction separated from the hydrocarbon product produced by an oxygenate to olefin reaction unit. The Cfraction primarily contains butenes which may be directed to a higher olefin reaction unit without removing isobutenes, butanes, and/or butadiene. The Cfraction is particularly well suited for the production of higher olefins because of its high olefin content, low branching number, and low contaminent levels. The invention is also directed to an olefin product composition that is produced by contacting the Cfraction with an oligomerization catalyst. The olefin composition is characterized by a relatively high octene content, and octene with a branching number less than 1.4.

Production of higher olefins

A process for preparing a substantially linear olefinic hydrocarbon mixture is described in which a lower olefin feed comprising one or more Cto Clower olefins is contacted in the presence of water and under olefin oligomerization conditions with a catalyst comprising surface-deactivated ZSM-23.

Process for olefin oligomerization

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Bierbeek, Belgium

Georges M K Mathys