Exxonmobil Chemical Patents Inc.

An Verberckmoes

Machteld Maria Mertens

Marcel Johannes Janssen

Stephen Harold Brown

Keith Holroyd Kuechler

Wilfried Jozef Mortier

Steven E Silverberg

Marc P Puttemans

Guang Cao

Luc R M Martens

Stephen Neil Vaughn

Kun Wang

Kenneth Ray Clem

Ivy Dawn Johnson

Yun Feng Chang

Robert James Saxton

Yun-Feng Chang

Richard B Hall

Marcel J G Janssen

Luc Roger Marc Martens

Etienne F Vansant

Filip Mees

Antonie Jan Bons

Georges M K Mathys

Helge Jaensch

John Stephen Godsmark

Hailian Li

Gotz Burgfels

Geraldine Tosin

Marcus Breuninger

Mark R Welford

Andreas Pritzl

Sourav Saha

Antonie-Jan Bons

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.

Olefin oligomerization process

A crystalline molecular sieve of MFS framework type manufactured by the method disclosed herein. A hydrocarbon conversion process using the crystalline molecular sieve is disclosed.

Hydrocarbon conversion process using molecular sieve of MFS framework type

A hydrocarbon composition that comprises species of at least 3 different carbon numbers, at least about 95 wt % non-normal hydrocarbons, no greater than 1000 wppm aromatics, no greater than 10 wt % naphthenes, and also has a certain boiling point range; and a process for making the hydrocarbon composition.

Olefin oligomerization and compositions therefrom

A method of making a crystalline molecular sieve of MFS framework type, said method comprising the steps of (a) adding at least one source of ions of tetravalent element (Y), at least one source of ions of trivalent element (X), at least one hydroxide source (OH), at least one structure-directing-agent (R), at least one seed source (Seed), and water (HO) to form a mixture having the following mole composition (expressed in term of oxide):YO:()XO:()OH:()R:()HO+()Seedwherein the m is in the range of from about 10 wtppm to about 2 wt. % (based on total weight of the synthesis mixture), the n is in the range of from about 0.005 to 0.05, the x is in the range of from about 0.01 to about 0.3, the y is in the range of from about 0.03 to about 2; and the z is in the range of from about 3 to about 30; and (b) treating said mixture under crystallization conditions to form said crystalline molecular sieve substantially free of non-MFS material, wherein said crystallization conditions comprise a temperature in the range of from about 150&#xb0; C. to about 250&#xb0; C., and crystallization time less than 100 hr, the weight hourly throughput is at least 0.001 hr.

Process for manufacturing molecular sieve of MFS framework type and its use

A silicoaluminophosphate molecular sieve is disclosed that comprises first and second intergrown phases of a CHA framework type and an AEI framework type, wherein said first intergrown phase has an AEI/CHA ratio of from about 5/95 to about 40/60 as determined by DIFFaX analysis, the second intergrown phase has an AEI/CHA ratio of about 30/70 to about as determined by DIFFaX analysis and said molecular sieve has a silica to alumina molar ratio (Si/Al) from about 0.13 to about 0.24.

Crystalline intergrowth material of silicoaluminophosphate having two intergrown phases

A process for manufacturing a silicoaluminophosphate molecular sieve comprising at least one intergrown phase of AEI and CHA framework types, the process comprising the steps of (a) combining at least one silicon source, at least one phosphorus source, at least one aluminum source, and at least one structure-directing-agent (R) to form a mixture; and (b) treating the mixture at crystallization conditions sufficient to form the silicoaluminophosphate molecular sieve, wherein the mixture prepared in step (a) has a molar composition of:(n)SiO/AlO/(m)PO/(x)R/(y)HOwherein n ranges from about 0.005 to about 0.6, m ranges from about 0.6 to about 1.2, x ranges from about 0.5 to about 0.99, and y ranges from about 10 to about 40.

Process for manufacture of silicoaluminophosphate molecular sieves

A feedstock containing at least 1 wt % butenes, at least 1 wt % pentenes, at least 1 wt % hexenes, at least 10 wppm Cdienes, at least 10 wppm Cdienes, and optionally at least 10 wppm Cdienes can be selectively hydrogenated over a catalyst (e.g., a noble metal) to form a stream containing 100 wppm to 4000 wppm total dienes. The hydrogenated stream, and an olefinic recycle stream having less than 10 wt. % Cmoieties, can be contacted with a molecular sieve catalyst, e.g., at a recycle to feed ratio between 0.1 and 3.0, at a WHSV of at least 1.0 based on olefin in the feed, and at a reactor &#x394;T no greater than 40&#xb0; F. (22&#xb0; C.), thus forming a reaction product that can then be separated into a distillate, e.g., having from 1 wt % to 30 wt % non-normal Colefins, and the aforementioned olefinic recycle stream.

Feedstock preparation of olefins for oligomerization to produce fuels

A hydrocarbon composition comprises at least 90 wt. % of Cto Cnon-normal olefins, non-normal saturates or combinations thereof based on the weight of the hydrocarbon composition, at least 2 wt. % and not greater than 25 wt. % of Chydrocarbons based on the weight of the hydrocarbon composition, and less than 15 wt. % of C+ hydrocarbons based on the weight of the hydrocarbon composition, wherein said hydrocarbon composition has a specific gravity at 15&#xb0; C. of at least 0.730 and less than 0.775. The composition is produced by oligomerization of at least one Cto Colefin and an olefinic recycle stream containing no more than 10 wt. % of C+ non-normal olefins. The composition is useful in producing fuel blends, such as jet fuel and diesel fuel.

Hydrocarbon compositions useful for producing fuels and methods of producing the same

A process for producing a hydrocarbon composition that comprises contacting a feed stream, that comprises at least one Cto Colefin, and an olefinic recycle stream, that comprises a first olefinic recycle stream and no more than 10 wt % of C+ non-normal olefins, with a molecular sieve catalyst in a reaction zone under olefin oligomerization conditions producing an oligomerization effluent stream; separating the oligomerization effluent stream to produce a first olefinic stream, that has a weight ratio of C&#x2212;/(C-C) molecules from about 0.8 to about 1.2 times the weight ratio of C&#x2212;/(C-C) molecules found in the oligomerization effluent stream, and a first hydrocarbon product stream, that comprises at least 1 wt % and no more than 30 wt % of Cnon-normal olefin; and splitting the first olefinic stream to produce the first olefinic recycle stream and a first purge stream.

Olefin oligomerization

A silicoaluminophosphate molecular sieve is disclosed that comprises first and second intergrown phases of a CHA framework type and an AEI framework type, wherein said first intergrown phase has an AEI/CHA ratio of from about 5/95 to about 40/60 as determined by DIFFaX analysis, the second intergrown phase has an AEI/CHA ratio of about 30/70 to about 55/45 as determined by DIFFaX analysis and said molecular sieve has a silica to alumina molar ratio (Si/Al) from about 0.13 to about 0.24.

Crystalline intergrowth material, its synthesis and its use in the conversion of oxygenates to olefins

In a method of synthesizing a silicoaluminophosphate molecular sieve comprising a CHA framework type material, an AEI framework type material, or a material comprising at least one intergrown phase of an AEI framework type and a CHA framework type, the amount of alkali metal present in said synthesis mixture is controlled so as to reduce the crystal size of the molecular sieve and/or to increase the AEI character of the intergrown phase.

Synthesis of silicoaluminophosphate molecular sieves

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 conversion process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock in the presence of a molecular sieve having been synthesized in the presence of a flocculant.

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

The present invention relates to a silicoaluminophosphate molecular sieve comprising at least one intergrown phase of molecular sieves having AEI and CHA framework types, wherein said intergrown phase has an AEI/CHA ratio of from about 5/95 to 40/60 as determined by DIFFaX analysis, using the powder X-ray diffraction pattern of a calcined sample of said silicoaluminophosphate molecular sieve. It also relates to methods for its preparation and to its use in the catalytic conversion of methanol to olefins.

Silicoaluminophosphate molecular sieve

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.

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Serskamp, Belgium

An Verberckmoes