Equistar Chemicals, LP

Occidental Chemical Corporation

Lyondell Chemical Technology, L.p.

Basell Poliolefine Italia S.r.l.

Lyondell Petrochemical Company

Basell Polyolefine Gmbh

Other

Arco Chemical Technology, L.p.

Basell Polyolefine Wesseling

Oxy Services, Inc.

Sandor M Nagy

Ramesh Krishnamurti

Bradley P Etherton

Barbara M Tsuie

John A Tyrell

Shahram Mihan

Mark P Mack

Barbara Kimmich

Karen L Neal-Hawkins

Daniel F White

Ilya Nifant'ev

Pavel V Ivchenko

Qi Wang

Jean A Merrick-Mack

Linda N Winslow

Natalia Nagy

Michael W Lynch

Craig C Meverden

Leonard V Cribbs

Christopher D Smith

Thomas F Smolka

Roger A Grey

David L Ramage

Reynald Chevalier

Mary K Cocoman

Xueyong Yang

John Tyrell

Debra L Jackson

Nicholas Bruschi

David W Leyshon

Shaotian Wang

Diego Brita

Charles S Holland

Vu Anh Dang

Gregory G Hlatky

Jonathan L Schuchardt

Igor Kashulin

Vladimir V Bagrov

Clifford C Lee

Edward S Vargas

Kenneth W Johnson

Habib Hichri

Lenka Lukesova

Justin E Turner

Charles H Gates, Jr

Giampiero Morini

Joel A Mutchler

Simona Guidotti

Dario Liguori

Joachim T M Pater

Ha H Nguyen

William J Sartain

Venki Chandrashekar

Anthony S Dearth

Dan D Lindsey

Sheri E Davis

Noel C Hallinan

Volker Fraaije

Stephen M Imfeld

Sebastian Joseph

Elizabeth I Ross-Medgaarden

Kiran M Gupte

Pranit S Metkar

William G Todd

Ilya E Nifant'ev

Walter M Opalinski

Lenka Richter-Lukesova

Jenny M Oran Osment

Everett O Lewis

Bib Hichri

Mingzhu Xu

Yulenty Deal

James D Montano-Lawrence

George R Horvat

Ronald J Clemons

Methods of depolymerizing polyolefin-based material into useful petrochemical products using styrene oligomers or polymers, and heat are described. The styrene oligomers or polymers improve the depolymerization reaction by decreasing the halftime for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.

Styrene-assisted depolymerization of polyolefins

Epoxidation methods and catalyst are described herein. The epoxidation catalysts generally include a metal component including silver and a support material including kaolinite, wherein the epoxidation catalyst includes less than 55 wt. % metal component.

Epoxidation processes and catalysts for use therein

Catalytic compositions for depolymerizing polyolefin-based waste material into useful petrochemical products and methods of use are described. The compositions are a composite of at least one zeolite catalyst with one or more co-catalyst(s) that is a solid inorganic material. These composite catalysts, along with heat, are used to both increase the depolymerization reaction rate of the feed streams and suppress poisoning effects of non-polyolefin polymers that may be present. This results in a shorter residence time in the depolymerization unit and more efficient process.

Composite catalyst for polyolefin depolymerization

Methods of depolymerizing polyolefin-based material into useful petrochemical products using supported metal oxides and heat are described. The supported metal oxides improve the depolymerization reaction by decreasing the half time for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.

Supported metal oxides as depolymerization catalysts

Methods of preparing titanated silica catalysts, and titanated silica catalysts. The titanated silica catalysts may include a silica support, which may include spherical beads. Methods of olefin epoxidation, which may include contacting an olefin with a titanated silica catalyst in the presence of an oxidant.

Titanated catalysts, methods of preparing titanated catalysts, and methods of epoxidation

Methods of depolymerizing polyolefin-based material into useful petrochemical products using metal oxides and heat are described. The metal oxides improve the depolymerization reaction by decreasing the onset temperature for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.

Polyolefin depolymerization with metal oxides

A method of depolymerizing plastics using a halloysite catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.

Plastic depolymerization using halloysite

A method including contacting an organic stream with water and carbon dioxide, whereby sodium is extracted from the organic stream, and separating an aqueous sodium salt-containing phase from an organic phase comprising a reduced sodium content. The organic stream can be a heavy residue formed in the co-production of propylene oxide and styrene. Contacting can include combining the carbon dioxide with the water to form a CO-saturated water stream and contacting the CO-saturated water stream with the organic stream, and/or combining the organic stream and the water to form a mixture and injecting the carbon dioxide as a gas thereinto. The method can further include repeating the contacting and the separating one or more times on the organic phase, subjecting the organic phase to ion exchange, or both, to obtain an organic phase having a further reduced sodium content. A system for carrying out the method is also provided.

Waste stream upgrading in a propylene oxide/styrene coproduction process

The present disclosure relates to a method including subjecting an organic stream comprising at least one oxygenate to hydrotreatment, whereby a hydrotreatment product comprising ethylbenzene is produced, wherein the organic stream is a product of a process for the production of propylene oxide; and separating an ethylbenzene product stream from the hydrotreatment product, to yield a residual stream.

By-product stream upgrading in a propylene oxide/styrene coproduction process

The present disclosure relates to a method for effecting catalytic selective oxidation in liquid phase comprising a perfluorinated solvent and an olefinic compound with molecular oxygen to produce an epoxide. The method may provide enhanced selectivity to the epoxide of greater than 60%. The olefinic compound may be ethylene, propylene, butenes, 1-octene, butadiene, allyl chloride, allyl alcohol, styrene, and the like. The perfluorinated solvent may be perfluoro methyldecalin, perfluorodecalin, perfluoroperhydrophenanthrene, perfluoro (butyltetrahydrofuran), isomers thereof, or a combination thereof. In some embodiments, the method includes catalytically epoxidizing, in a liquid phase comprising a perfluorinated solvent, propylene with molecular oxygen to produce propylene oxide. A system for carrying out the method is also provided, the system comprising a source of a perfluorinated solvent, and a liquid phase reactor fluidly connected with the source, and configured for effecting catalytic selective oxidation, in a liquid phase comprising the perfluorinated solvent, of an olefinic compound with molecular oxygen to produce an epoxide.

Liquid phase selective oxidation to epoxides with molecular oxygen

The present disclosure generally relates to a silver-based epoxidation catalyst. In certain embodiments, a method is provided for modulating the reactivity of the silver-based epoxidation catalyst, comprising the catalyst being post-treated with at least two different salt solutions. In some embodiments, the treatment results in the deposition of one or more metals onto the surface of the catalyst. In further embodiments, method is also provided of using the silver catalyst to generate an epoxide from an olefin.

Post treated silver catalysts for epoxidation

A catalyst composition which comprises titanium, wherein part of the titanium is present as a titanium dioxide phase and at least some of the titanium dioxide phase is in the brookite polymorphic form is provided. In some embodiments, the catalyst also comprises a silica support which exhibits a high surface area and pore volume. Methods of preparing the catalyst and its use in an epoxidation reaction are also provided.

Catalysts containing specific titanium polymorphic forms

The present disclosure relates to a method of epoxidizing an olefin to form an epoxide, the method comprising contacting an alkeneor aralkenewith a titanium silica catalyst, a peroxide, a buffer, and one or more organic solvents in a reaction mixture, wherein the one or more organic solvents comprise a first organic solvent selected from:R&#x2014;OH&#x2003;&#x2003;(I),R&#x2014;CN&#x2003;&#x2003;(II),R&#x2014;C(O)&#x2014;R&#x2003;&#x2003;(III) orR&#x2014;O&#x2014;R&#x2003;&#x2003;(IV)

Catalyst performance in propylene epoxidation

The present disclosure relates to metallocene catalysts for use in polymerization processes. Such catalysis may be used to generate long chain polymers with low long chain branching and high molecular weights. Additionally, the size of the polymers produced can be controlled by modifying the ratio of MAO or other activator to metallocene catalyst.

Substituted zirconocenes catalysts and methods of use in polymerization reactions

The present disclosure relates to a method of preparing propylene oxide comprising the steps:

Process for forming propylene oxide from oxidation of methyl benzyl alcohol

Growing community of inventors

Grand Island, NY, United States of America

Sandor M Nagy