Dow Global Technolgoies LLC

Thomas Davidian

Matthijs Ruitenbeek

Garmt R Meima

Adam Chojecki

Peter E Groenendijk

Adrianus Koeken

Andrzej Malek

Max Markus Tirtowidjojo

Sean W Ewart

Barry B Fish

Vera P Santos Castro

Daniela Ferrari

Cornelis Biesheuvel

Gerolamo Budroni

Rony S Vanspeybroeck

Steven L F Corthals

Evelyn Auyeung

Davy Nieskens

Michiel Makkee

Marco F Wielemaker

Marjolein Vos

Tim A Wezendonk

Freek Kapteijn

Steven Corthals

Gascon Jorge

Andrzej M Malek

Rony Vanspeybroeck

Steven LF Corthals

A solution polymerization process for producing ethylene-based polymer includes introducing ethylene monomer, hydrocarbon solvent, and Ziegler-Natta catalyst into an entrance of a solution polymerization reactor. An ethylene-based polymer is produced by solution polymerizing the ethylene monomer in hydrocarbon solvent. Subsequently, a catalyst deactivator is introduced into x the exit of the solution polymerization reactor, thereby producing hydrochloric acid byproduct. The catalyst deactivator includes long chain carboxylate and at least one cation selected from Groups 1, 2, and 12 of the IUPAC periodic table, with the exception of calcium. The catalyst deactivator reduces the effectiveness of the Ziegler-Natta catalyst and neutralizes the hydrochloric acid by forming a chloride salt other than calcium chloride.

Ziegler-Natta catalyst deactivation and neutralization

A method and an integrated system for reducing COemissions in industrial processes. The method and integrated system () capture carbon dioxide (CO) gas from a first gas stream () with a chemical absorbent to produce a second gas stream () having a higher concentration of carbon monoxide (CO) gas and a lower concentration of COgas as compared to first gas stream. The CO gas in the second gas stream is used to produce Cto Chydrocarbons in an exothermic reaction () with hydrogen (H) gas (). At least a portion of the heat generated in the exothermic reaction is used to regenerate the chemical absorbent with the liberation of the COgas () captured from the first gas stream. Heat captured during the exothermic reaction can, optionally, first be used to generate electricity, wherein the heat remaining after generating electricity is used to thermally regenerate the chemical absorbent.

Method and system for reducing CO2 emissions from industrial processes

The present invention provides methods for making propanal in a reaction comprising the oxidative coupling of methane (OCM) and oxygen as a reactant stream in a gas phase reaction, preferably in the presence of water or steam, to form ethylene, ethane, carbon dioxide (CO), water and syngas (CO and H) in a first reactor as an ethylene stream, and then forming propanal in a second reactor by feeding to the second reactor the ethylene stream with the syngas from the first reactor in the gas phase and hydroformylating in the presence of a catalyst for a water shift reaction. In the method, the ratio of Hto CO in the syngas is maintained by either co-feeding steam into the first reactor or the second reactor to generate additional Hin the syngas, or by forming CO in the second reactor from the water shift reaction by feeding the COfrom the ethylene stream into the second reactor.

Process for the conversion of methane into propanal

A feedstream comprising hydrogen and a gas selected from carbon monoxide, carbon dioxide, or a combination thereof is converted to a product mixture containing a combination of saturated and unsaturated two carbon atom and three carbon atom hydrocarbons via contact with a mixed catalyst comprising a mixed metal oxide catalyst selected from a copper oxide, copper oxide/zinc oxide, copper oxide/alumina, copper oxide/zinc oxide/alumina catalyst, a zinc oxide/chromium oxide catalyst, or a combination thereof, in admixture with a molecular sieve catalyst having a CHA, AEI, AEL, AFI, BEA, or DDR framework type, or a combination of such molecular sieves. Exemplary molecular sieve catalysts include SAPO-34, SAPO-18, SAPO-5, and Beta. Advantages include reduced production of C1 hydrocarbons, C4 and higher hydrocarbons, or both; long catalyst lifetimes; desirable conversions; and desirable proportions of C2 and C3 paraffins.

Conversion of carbon monoxide, carbon dioxide, or a combination thereof over hybrid catalyst

Preparation of a catalyst suitable for use in Fischer-Tropsch Synthesis reactions using a two step process in which the steps may be performed in either order. In step a), impregnate an iron carboxylate metal organic framework selected from a group consisting of iron-1,3,5-benzenetricarboxylate (Fe-(BTC), Basolite&#x2122; F-300 and/or MIL-100 (Fe)), iron-1,4 benzenedicarboxylate (MIL-101(Fe)), iron fumarate (MIL-88 A (Fe)), iron-1,4 benzenedicarboxylate (MIL-53 (Fe)), iron-1,4 benzenedicarboxylate (MIL-68 (Fe)) or iron azobenzenetetracarboxylate (MIL-127 (Fe)) with a solution of a promoter element selected from alkali metals and alkaline earth metals. In step b) thermally decompose the iron carboxylate metal organic framework under an inert gaseous atmosphere to yield a catalyst that is a porous carbon matrix having embedded therein a plurality of discrete aliquots of iron carbide. If desired, add a step intermediate between steps a) and b) or preceding step b) wherein the metal organic framework is impregnated with an oxygenated solvent solution of a polymerizable additional carbon source and the polymerizable additional carbon source is thereafter polymerized.

Process for synthesizing iron carbide Fischer-Tropsch catalysts

Form liquid product stream that has a Cto Chydrocarbon content of less than 5.0 wt % based upon a total weight of the liquid product stream via a process that includes contacting synthesis gas with a sulfurized Zeolite Socony Mobil-5 catalyst. The sulfurized Zeolite Socony Mobil-5 catalyst can include ZSM-5, cobalt, an alkali metal, sulfur, and a reduction promoter.

Forming light hydrocarbons

A catalyst composition and process for preparing it and for using it to enhance the selectivity to light (C2 to C3) olefins in a Fischer-Tropsch conversion of synthesis gas is disclosed. The catalyst composition is an iron-based catalyst on an yttria/zirconia support. In a Fischer-Tropsch reaction the selectivity to ethylene may be enhanced by at least 20 mole percent and to propylene by at least 4 mole percent, in comparison with use of an otherwise identical catalyst that is free of yttria, in an otherwise identical Fischer-Tropsch reaction.

Catalyst composition for the selective conversion of synthesis gas to light olefins

A Fischer-Tropsch catalyst, useful for conversion of synthesis gas to olefins, is prepared from a catalyst precursor composition including iron oxide and an alkali metal on a substantially inert support, and then treated by a process including as ordered steps (1) reduction in a hydrogen-containing atmosphere at a pressure of 0.1 to 1 M Pa and a temperature from 280&#xb0; C. to 450&#xb0; C.; (2) carburization in a carbon monoxide-containing atmosphere at a pressure from 0.1 to 1 M Pa and a temperature from 200&#xb0; C. to less than 340&#xb0; C.; and (3) conditioning in a hydrogen- and carbon monoxide-containing atmosphere at a pressure from 0.1 to 2 MPa and a temperature from 280&#xb0; C. to 340&#xb0; C. The resulting catalyst exhibits at least one improvement selected from (1) increased overall activity; (2) reduced break-in time; (3) slowed rate of deactivation; and (4) increased time to onset of deactivation; when compared to an otherwise identical catalyst precursor composition treated by one or some, but not all, of the given steps and/or under different conditions.

Iron-based catalysts and treatment process therefor for use in Fischer-Tropsch reactions

Growing community of inventors

Terneuzen, Netherlands

Thomas Davidian