Union Carbide Chemicals & Plastics Technology Corporation

Union Carbide Corporation

Other

Dow Global Technolgoies LLC

Union Carbide Chemicals and Plastics Company, Inc.

Aither Chemical LLC

Madan Mohan Bhasin

Paul C Ellgen

Kenneth A Nielsen

Hwaili Soo

Stephen W King

Erlind M Thorsteinson

Kenneth D Campbell

Seyed R Seyedmonir

Glenn H Warner

David Michael Anthony Minahan

Pen-Yuan Chou

Rick David Cantrell

Anca Ghenciu

Alistair Duncan Westwood

Kevin E Howard

George Ernest Keller, Ii

Sten A Wallin

Peter E Groenendijk

Mark K Brayden

Albert C Liu

George L O'Connor

Mark Nunley

Juliana G Serafin

David Michael Minahan

Fredrick W Vance

Marc A Mangnus

Steven R Lakso

James Russell Nelson

Peter C Lebaron

Michael Scott Jarrell

Gary Lynn Culp

Vincent Joseph Stricker

William George Etzkorn

Scott F Mitchell

Foppe Dupius

Bernard Lieberman

Manuel A W Natal

Parvez H Wadia

Michael C Smith

Charles D Hendrix

Manuel AW Natal

Frederik R Van Buren

A catalyst support comprising at least 95% silicon carbide, having surface areas of ≤10 m/g and pore volumes of ≤1 cc/g. A method of producing a catalyst support, the method including mixing SiC particles of 0.1-20 microns, SiOand carbonaceous materials to form an extrusion, under inert atmospheres, heating the extrusion at temperatures of greater than 1400° C., and removing residual carbon from the heated support under temperatures below 1000° C. A catalyst on a carrier, comprising a carrier support having at least about 95% SiC, with a silver solution impregnated thereon comprising silver oxide, ethylenediamine, oxalic acid, monoethanolamine and cesium hydroxide. A process for oxidation reactions (e.g., for the production of ethylene oxide, or oxidation reactions using propane or methane), or for endothermic reactions (e.g., dehydrogenation of paraffins, of ethyl benzene, or cracking and hydrocracking hydrocarbons).

Catalyst supports—composition and process of manufacture

A catalyst support comprising at least 95% silicon carbide, having surface areas of &#x2264;10 m/g and pore volumes of &#x2264;1 cc/g. A method of producing a catalyst support, the method including mixing SiC particles of 0.1-20 microns, SiOand carbonaceous materials to form an extrusion, under inert atmospheres, heating the extrusion at temperatures of greater than 1400&#xb0; C., and removing residual carbon from the heated support under temperatures below 1000&#xb0; C. A catalyst on a carrier, comprising a carrier support having at least about 95% SiC, with a silver solution impregnated thereon comprising silver oxide, ethylenediamine, oxalic acid, monoethanolamine and cesium hydroxide. A process for oxidation reactions (e.g., for the production of ethylene oxide, or oxidation reactions using propane or methane), or for endothermic reactions (e.g., dehydrogenation of paraffins, of ethyl benzene, or cracking and hydrocracking hydrocarbons).

Catalyst supports&#x2014;composition and process of manufacture

A supported silver catalyst and use thereof in a process for producing an alkylene oxide, such as ethylene oxide, by the direct oxidation of an alkylene with oxygen or an oxygen-containing gas, wherein the catalyst provides improved stability and improved resilience to reactor upsets and timely recovery to substantially pre-upset levels of catalyst activity and/or efficiency. In some embodiments, the catalyst also exhibits improved activity. A catalyst capable of producing ethylene oxide at a selectivity of at least 87 percent while achieving a work rate of at least 184 kg/h/mat a temperature of no greater than 235&#xb0; C. when operated in a process where the inlet feed to a reactor containing the catalyst comprises ethylene, oxygen, and carbon dioxide, wherein the concentration of carbon dioxide in the inlet feed is greater than or equal to 2 mole percent.

Alkylene oxide catalyst and use thereof

A method is disclosed of coupling and integrating natural gas recovery and separation along with chemical conversion. The method can comprise extracting at least one natural gas component. Non-limiting examples of the extracted component include ethane, propane, butanes, and pentanes. The method can also comprise contacting a natural gas stream with a catalyst under conditions that selectively convert at least one component into at least one product, such as ethylene, acetic acid, polyethylene, vinyl acetate, ethylene vinyl acetate, ethylene oxide, ethylene glycol, and their derivatives, propylene, polypropylene, propylene oxide, propylene glycol, acrylates, acrolein, acrylic acid, butenes, butadiene, methacrolein, methacrylic acid, methacrylates, and their derivatives, which can then be separated from the remaining components. The method can further comprise integrating production of ethylene, acetic acid, and/or vinyl acetate with polymerization of ethylene-based polymers, such as polyethylene, ethylene vinyl acetate, ethylene vinyl alcohol, polyvinyl acetate, or polyvinyl alcohol.

Methods for integrated natural gas purification and products produced therefrom

The invention provides a method for removing mercury from a liquid or gas hydrocarbon stream, mixtures thereof, including mixtures of liquid streams with a solid carbonaceous substance, by contacting the hydrocarbon stream with a composition comprising silver and a support material, wherein the composition as measured by ammonia chemisorption has a surface acidity in the range of 0.1-10.0 &#x3bc;mole of irreversible NH/g of the composition.

Method for removal of mercury from hydrocarbon feedstocks

A method and apparatus for synthesizing at least one of alkylene oxides and alkylene glycols from lower alkanes and/or lower alkenes. In the preferred embodiment, the apparatus includes a lower alkane/alkene supply; an oxygen supply for providing a source of oxygen; and a metal oxide catalytic reactor. The metal oxide catalytic reactor includes a reactor chamber; and a catalyst in the chamber for reacting the lower alkane/alkene supply with the source of oxygen to convert the lower alkane/alkene by selective partial oxidation to at least one of the alkylene oxides and alkylene glycols. Also, in the preferred embodiment, a separator, downstream from the reactor, separates the alkylene oxides and alkylene glycols from the total product stream and the unconverted reactants.

Synthesis of lower alkylene oxides and lower alkylene glycols from lower alkanes and/or lower alkenes

The present invention provides a catalyst for the oxidative dehydrogenation of a lower hydrocarbon to form at least one higher hydrocarbon and/or lower olefin. In one embodiment, the catalyst includes a nonstoichiometric rare earth oxycarbonate of the formula M C O having a disordered and/or defect structure, wherein M is at least one rare earth element selected from the group consisting of La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, and Tm; X&equals;2; Z&equals;3&plus;AY; A is less than about 1.8, and Y is the number of carbon atoms in the oxycarbonate. When used for the oxidative dehydrogenation of a lower hydrocarbon at a pressure above about 100 psig, the catalyst has a selectivity of at least about 40% to at least one higher hydrocarbon and/or lower olefin. Methods for preparing catalysts taught by the invention and processes for using the catalysts for the oxidative dehydrogenation of lower hydrocarbons are also provided.

Catalysts for the oxidative dehydrogenation of hydrocarbons

The present invention provides methods for manufacturing olefins such as ethylene and propylene from lower alkanes, that is, methane, ethane and/or propane, by oxidative dehydrogenation at elevated pressure. The olefins are selectively recovered from unconverted lower alkane feed and reaction byproducts by using a complexation separation, such as an absorption separation that uses aqueous silver nitrate as the complexation agent. Catalysts are used that give high selectivity for oxidative dehydrogenation of lower alkanes to olefins at elevated pressure, such as a nonstoichiometric rare earth oxycarbonate catalyst.

Methods for manufacturing olefins from lower alkans by oxidative dehydrogenation

The invention provides a process for synthesizing alkanolamines and/or alkyleneamines by reacting either an alkane, an alkene, or both with a source of oxygen and a source of nitrogen and, optionally, additional hydrogen to convert the alkane and/or alkene by selective partial oxidative amination to at least one of the desired end products. The invention further provides a regenerable catalyst for use in synthesizing alkanolamines and/or alkyleneamines by selective partial oxidative amination of alkanes and/or alkenes.

Process and catalyst for synthesizing aliphatic, cyclic and aromatic alkanolamines and alkyleneamines

This invention is directed to an improved exhaust gas catalyst for the combustion of gaseous waste products from internal combustion engines, particularly automobiles, and industrial stationary source engines along with a method of making the same. The exhaust gas catalyst comprises a substantially pure alpha-alumina carrier and at least one noble metal selected from platinum, palladium and mixtures thereof, and has excellent stability over long-term use.

Catalysts comprising substantially pure alpha-alumina carrier for

Catalysts for the production of alkylene oxide by the epoxidation of alkene with oxygen comprise a silver impregnated support containing a sufficient amount of manganese component to enhance at least one of activity and/or efficiency and/or stability as compared to a similar catalyst which does not contain manganese component.

Alkylene oxide catalysts having enhanced activity and/or stability

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Charleston, WV, United States of America

Madan Mohan Bhasin