Exxonmobil Chemical Patents Inc.

Stephen Wayne Beadle

Raphael Frans Caers

John Stephen Godsmark

Stephen Harold Brown

Ramzi Yanni Saleh

Georges M K Mathys

David Wayne Turner

Jose M Vargas

Carolyn B Duncan

Georges Marie K Mathys

Cesar M Cheng-Guajardo

Jon Edmond Randoph Stanat

Jane C Cheng

Jon E Stanat

Allen David Godwin

Hubertus Joseph Beckers

Ronald Dean Garton

Charles Morris Yarbrough

Alex E Carpenter

Arie Van Vliet

Travis A Reine

Roger Eijkhoudt

Ernest E Green

Zsigmond Varga

John J Houben

Cesar M Cheng Guajardo

Robert L Wolf

Dries Timmermans

Edwin Kooke

Thomas Wesselmann

Hans Goris

Hubertus J Beckers

Ronald D Garton

Stephen H Brown

Olefin feeds with high olefin content and/or containing a substance that generates water when contacting the catalyst, are oligomerised over solid phosphoric acid catalyst in tubular reactors by introducing the olefin feed into the reactor and maintaining the reacting mixture under conditions whereby the peak temperature is controlled to be below 265&#xb0; C. and preferably a single liquid or dense phase is maintained and the average temperature throughout the reactor is maintained in the range 190&#xb0; C. to 260&#xb0; C.

Oligomerisation of olefins

The invention relates to series reactor beds containing different oligomerization catalysts and having independent temperature control, and processes for the oligomerization of light olefins to heavier olefins using such series reactor beds.

Series catalyst beds

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

The gas cycle in a high pressure hydroformylation reaction using a series of at least two reactors is controlled to optimise yield, conversion and selectivity and to control reaction temperature. The control is achieved through balancing fresh gases and recycle gases in each of the reactors and as an optional feature the use of hydrogen off gases from the downstream hydrogenation used in the conversion of the hydroformylation reaction product to product alcohols.

Hydroformylation

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

In a process for preparing an olefinic hydrocarbon mixture comprising at least 5% by weight of mono-olefin oligomers of the empirical formula:CHwhere n is greater than or equal to 6, a feedstock comprising n-butene and propylene in a molar ratio of about 1:0.01 to about 1:0.49 is contacted under oligomerization conditions with surface deactivated ZSM-23. The resultant mono-olefin oligomers comprise at least 20 percent by weight of olefins having at least 12 carbon atoms, wherein said olefins having at least 12 carbon atoms have an average of from about 0.8 to about 2.0 C&#x2013;Calkyl branches per carbon chain.

Process for preparing and olefinic hydrocarbon mixture

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Prairieville, LA, United States of America

Stephen Wayne Beadle