Exxonmobil Chemical Patents Inc.

Luc Roger Marc Martens

Marcel Johannes Janssen

Stephen Neil Vaughn

Shun Chong Fung

Kenneth Ray Clem

Raphael Frans Caers

John Richard Shutt

Hubertus Joseph Beckers

Peter Loezos

Eddy Theophile Van Driessche

James H Beech

Karl Gottlieb Strohmaier

Kun Wang

Guang Cao

Nicolas P Coute

Yun-Feng Chang

Richard B Hall

Georges Marie Mathys

An Verberckmoes

Filip Mees

Etienne F Vansant

Jeffrey Wayne Sprinkle

Ian Nathaniel Walker

Machteld Maria Mertens

Tan-Jen Chen

Johannes Petrus Verduijn

Richard Edwards Walter

John Stephen Godsmark

Albert Edward Schweizer

Philip Andrew Ruziska

Jannetje Maatje Van Den Berge

John K Pierce

Wim Herman Verrelst

Eddy Theophyle Andrea Van Driessche

Georges Maria Mathys

Mechilium (Marcel) Johannes Gerardus Janssen

Lynn L Zhao

Mixed butene streams containing butene-1 and isobutylene and optionally butene-2 are hydroformylated under conditions that hydroformylates all the monomers to yield a mixture of valeraldehydes. Higher temperatures and/or longer residence times and/or higher partial pressure of carbon monoxide than in conventional processes are used to ensure hydroformylation of all the monomers.

Hydroformylation of butenes

Mixed butene streams containing butene-1 and isobutylene and optionally butene-2 are hydroformylated under conditions that hydroformylates all the monomers to yield a mixture of valeraldehydes.

Processes related to the hydroformylation of butenes

Hydroformylation of butenes comprising isobutylene

Propylene streams obtained by the conversion of oxygenates to olefins are used as feeds for hydroformylation. The streams may contain measurable amounts of dimethyl ether without adversely impacting the hydroformylation.

Propylene hydroformylation

Metalloaluminophosphate molecular sieves and metalloaluminophosphate molecular sieve catalyst particles are protecting from degradation by water by maintaining said molecular sieves or catalysts in contact with a liquid mixture of alcohol and water, the mixture of alcohol and water containing from 45 wt % to 99.8 wt % alcohol. The metalloaluminophosphate molecular sieves and metalloaluminophosphate molecular sieve catalyst particles which have been protected in such fashion catalyze the conversion of feedstocks to hydrocarbons.

Protecting catalytic sites of metalloaluminophosphate molecular sieves

The invention is directed to methods for protecting metalloaluminophosphate molecular sieves, particularly silicoaluminophosphate (SAPO) molecular sieves, from loss of catalytic activity due to contact with a gas containing water. The methods of the invention provide procedures that enable activated sieve to contact water vapor, within a certain range of time, temperature, and water partial pressure conditions, before the sieve becomes substantially deactivated.

Maintaining molecular sieve catalytic activity under water vapor conditions

The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to a catalyst composition comprising a molecular sieve having a framework including at least [AlO] and [PO] tetrahedral units, at least one of a binder and a matrix material and at least one phosphorus compound separate from said molecular sieve wherein, after calcination at 760&#xb0; C. for 3 hours, said catalyst composition has a microporous surface area in excess of 20% of the microporous surface area of said molecular sieve after calcination at 650&#xb0; C. in nitrogen for 2 hours. The catalyst composition is particularly useful in a conversion process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock.

Molecular sieve catalyst composition, its production and use in conversion processes

The invention is directed to methods of starting up reaction systems. The reaction systems are those that use catalysts that comprise molecular sieves, particularly metalloaluminophosphate molecular sieves, especially metalloaluminophosphate molecular sieves which are susceptible to loss of catalytic activity due to contact with water molecules. The methods provide appropriate mechanisms of heating and loading the activated molecular sieves to protect against loss of catalytic activity that can occur due to contact with water molecules.

Method of starting up a reaction system

Hydrocarbon or oxygenate conversion process in which a feedstock is contacted with a non zeolitic molecular sieve which has been treated to remove most, if not all, of the halogen contained in the catalyst. The halogen may be removed by one of several methods. One method includes heating the catalyst in a low moisture environment, followed by contacting the heated catalyst with air and/or steam. Another method includes steam-treating the catalyst at a temperature from 400&#xb0; C. to 1000&#xb0; C. The hydrocarbon or oxygenate conversion processes include the conversion of oxygenates to olefins, the conversion of oxygenates and ammonia to alkylamines, the conversion of oxygenates and aromatic compounds to alkylated aromatic compounds, cracking and dewaxing.

Hydrocarbon conversion processes using non-zeolitic molecular sieve catalysts

The invention is directed to a method for modifying a microporous metalloaluminophosphate molecular sieve, the method comprising the steps of a) introducing a compound containing at least one M-X group within the cages of said microporous molecular sieve; and b) reacting said compound containing at least one M-X group with the acid groups located in the cages of the molecular sieve, wherein the compound containing at least one M-X group is selected from the group consisting of compounds of formula MX, compounds of formula MX, and mixtures thereof, M being a metal belonging to Group 13 of the Periodic Table, and each X independently being a hydrogen or halogen atom. Preferably, X is a hydrogen atom. The present invention also relates to modified metalloaluminophosphate molecular sieves, preferably modified silicoaluminophosphate molecular sieves, as well as to the use of these modified molecular sieves in catalytic processes, such as processes for the conversion of oxygenated hydrocarbon feedstocks.

Modified metalloaluminophosphate molecular sieves

Disclosed is a method of protecting the loss of catalytic activity of metalloaluminophosphate molecular sieve, particularly a SAPO molecular sieve, from contact with moisture. The method involves heating the metalloaluminophosphate molecular sieve so as to remove template, and provide a molecular sieve in sufficiently dry form for storage.

Method of protecting SAPO molecular sieve from loss of catalytic activity

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Meise, Belgium

Luc Roger Marc Martens