The Dow Chemical Company

Dow Global Technolgoies LLC

Craig B Murchison

A Dale Harley

G Edwin Vrieland

Dewey A Murdick

Dennis A Hucul

Rex R Stevens

Michael T Holbrook

Larry N Ito

Bijan Khazai

David D Smith

Robert T Klun

George J Quarderer, Jr

Joseph J Maj

Gene A Cochran

Mark D Bearden

Jonathan H Siddall

Michael A DesJardin

Ravi S Dixit

Jose Puga

Mark D Cisneros

Sameer S Bharadwaj

Mark M Conway

Gerald E Lazaruk

Robert A Stowe

Richard L Weiss

Edwin D Weihl

A process and catalyst for the partial oxidation of paraffinic hydrocarbons, such as ethane, propane, naphtha, and natural gas condensates, to olefins, such as ethylene and propylene. The process involves contacting a paraffinic hydrocarbon with oxygen in the presence of hydrogen and a catalyst under autothermal process conditions. Preheating the feed decreases oxygen consumption and increases the net hydrogen balance. The catalyst comprises a Group 8B metal, preferably, a platinum group metal, and at least one promoter selected from Groups 1B, 6B, 3A, 4A, and 5A, optionally supported on a catalytic support, such as magnesia or alumina. In preferred embodiments, the support is pretreated with a support modifier selected from Groups 1A, 2A, 3B, 4B, 5B, 6B, 1B, 3A, 4A, 5A, the rare earth lanthanides, and the actinides. A modified fluidized bed reactor is disclosed for the process.

Autothermal process for the production of olefins

A process for converting a chlorinated alkene feedstock including two or more chlorines to reaction products including a less-chlorinated alkene in a commercially substantial proportion, comprising reacting the chlorinated alkene feedstock with hydrogen in the presence of a catalyst consisting essentially of a Group VIII metal other than rhodium, palladium or ruthenium and a Group IB metal on a support.

Processes for converting chlorinated alkenes to useful, less chlorinated

A process for the catalytic conversion of various chlorinated hydrocarbon byproducts and waste products especially to less chlorinated, useful or salable products, in which a chlorinated hydrocarbon feedstock containing two or more chlorines is reacted with hydrogen in the presence of a catalyst consisting essentially of an active hydrogenating metal component such as platinum in elemental or compound form, and a surface segregating metal component such as copper in elemental or compound form on a support.

Processes for converting chlorinated byproducts and waste products to

A process for the production of a diaryl carbonate comprising:

Captive carbonyl halide process for production of diaryl carbonates

A process for the production of olefins and diolefins, such as 1,3-butadiene, comprising contacting an aliphatic hydrocarbon, such as butane, with a heterogeneous catalyst composition containing reactive oxygen under reaction conditions such that a more highly unsaturated aliphatic hydrocarbon is selectively formed in a high productivity. The catalyst is a composition comprising (a) a support component of magnesia and alumina and/or magnesium aluminate spinel, and (b) a catalyst component of magnesia, an oxide of molybdenum, a Group IA metal oxide promoter, and optionally vanadium oxide. Catalysts of high surface area and high attrition resistance are claimed.

Process of oxidizing aliphatic hydrocarbons employing a molybdate

A process for the production of unsaturated aliphatic hydrocarbons, such as diolefins, comprising contacting an aliphatic hydrocarbon, such as an alkane or a monoolefin, with a solid heterogeneous catalyst containing labile oxygen under reaction conditions such that a more highly unsaturated aliphatic hydrocarbon is selectively formed in a high space-time yield. The catalyst comprises an oxide of magnesium, an oxide of molybdenum, an alkali metal promoter, and optionally an oxide of vanadium. For example, butane is oxidized in the presence of magnesium molybdate doped with alkali metal oxide to a mixture of products including predominantly butadiene and cis-2-butene and trans-2-butene.

Process of oxidizing aliphatic hydrocarbons employing an alkali-promoted

A process for forming an alcohol fraction boiling in the range of motor gasoline that is enriched in higher alcohols, comprises contacting a mixture of hydrogen, carbon monoxide and a lower alkanol with a catalyst comprising:

Preparation of ethanol and higher alcohols from lower carbon number

Fluoropyridine compounds, including 3- and 5-fluoropyridines, are prepared in an improved process by contacting chloropyridine compounds with hydrogen fluoride in the vapor phase in the presence of an activated carbon catalyst having large diameter pores. Thus, 2,3-difluoro-5-(trifluoromethyl)pyridine is prepared by contacting 3-chloro-2-fluoro-5-(trifluoro-methyl)pyridine with excess hydrogen fluoride at about 500.degree. C. in the presence of an activated carbon catalyst having an average pore diameter of about 100 Angstroms.

Preparation of fluoropyridines

A method for controlling the ratio of methanol to higher alcohols produced in a process for making mixed alcohols by contacting a hydrogen- and carbon monoxide-containing feed with a molybdenum- or tungsten-containing catalyst, said method comprising adjusting a concentration of a sulfur releasing substance in the feed.

Method for adjusting methanol to higher alcohol ratios

The invention is a process for preparing a 2-halo-1-alkene comprising contacting a hydrocarbon stream with a hydrogen halide, in the presence of water and an effective amount of a catalyst, at a temperature between about 100.degree. C. and about 400.degree. C., wherein; the hydrocarbon stream comprises a 1,2-diene, a terminal acetylene or mixtures thereof, represented by the formulas CH.sub.2 .dbd.C.dbd.CH--R or CH.tbd.C--CH.sub.2 --R wherein R is hydrogen, alkyl, cycloalkyl or aryl and may be substituted or unsubstituted; the water is present in an amount of between about 1,000 and 100,000 parts per million by weight; and the catalyst comprises carbon, silica alumina, aluminosilicates, silica gel, silica, silica magnesia, silicalite, group IIIA, IIIB, IVA, IVB or V metal oxides or rare earth oxides.

Preparation of 2-halo-1-alkenes from hydrocarbon streams

A Fischer-Tropsch process comprises contacting hydrogen and carbon monoxide in the presence of a conventional Fischer-Tropsch catalyst in combination with an amount of phosphorus effective to selectively poison the Fischer-Tropsch catalyst so as to improve the selectivity of said catalyst to C.sub.2 -C.sub.4 olefins.

Selective poisoning of Fischer-Tropsch catalysts

The invention is a process for preparing a 2-halo-1-alkene comprising contacting a hydrocarbon stream with a hydrogen halide, in the presence of water and an effective amount of a catalyst, at a temperature between about 20.degree. C. and about 400.degree. C., wherein; the hydrocarbon stream comprises a 1,2-diene, a terminal acetylene or mixtures thereof, represented by the formulas CH.sub.2 .dbd.C.dbd.CH--R or CH.tbd.C--CH.sub.2 --R wherein R is hydrogen, alkyl, cycloalkyl or aryl and may be substituted or unsubstituted; the water is present in an amount capable of maintaining the selectivity of the catalyst for the insertion of the halide on the 2 carbon of the 1,2-diene or terminal acetylene; and the catalyst comprises carbon, silica alumina, aluminosilicates, silica gel, silica, silica magnesia, silicalite, group IIIA, IIIB, IVA, IVB or V metal oxides or rare earth oxides. The invention further includes the additional step of preparing an acrylate ester by contacting the 2-halo-1-alkene, with carbon monoxide and an esterifying agent such as an alcohol, phenol, carbonate, or (poly)glycol monoether, in the presence of a group VIII metal catalyst and a halogen acceptor.

Preparation of 2-halo-1-alkenes and acrylate esters from hydrocarbon

The disclosure describes a process for alkylating aromatics comprising the steps of:

Integrated Fischer-Tropsch and aromatic alkylation process

In Fischer-Tropsch reaction to form hydrocarbons from hydrogen and carbon monoxide the use of a catalyst containing:

Growing community of inventors

Midland, MI, United States of America

Craig B Murchison