OXIDATIVE HALOGENATION OF C1 HYDROCARBONS TO HALOGENATED C1 HYDROCARBONS

An oxidative halogenation process involving contacting methane, a C1 halogenated hydrocarbon, or a mixture thereof with a source of halogen and a source of oxygen, at a molar ratio of reactant hydrocarbon to source of halogen in a feed to the reactor greater than 23/1 , and/or at a molar ratio of re...

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Hauptverfasser: ALBERT E. SCHWEIZER, JR, SIMON G. PODKOLZIN, ERIC E. STANGLAND, MARK E. JONES
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SIMON G. PODKOLZIN
ERIC E. STANGLAND
MARK E. JONES
description An oxidative halogenation process involving contacting methane, a C1 halogenated hydrocarbon, or a mixture thereof with a source of halogen and a source of oxygen, at a molar ratio of reactant hydrocarbon to source of halogen in a feed to the reactor greater than 23/1 , and/or at a molar ratio of reactant hydrocarbon to source of oxygen in a feed to the reactor greater than about 46/1; in the presence of a rare earth halide or rare earth oxyhalide catalyst, to produce a halogenated C1 product having at least one more halogen as compared with the C1 reactant hydrocarbon, preferably, methyl chloride. The process can be advantageously conducted to total conversion of source of halogen and source of oxygen. The process can be advantageously conducted with essentially no halogen in the feed to the reactor, by employing a separate catalyst halogenation step in a pulse, swing or circulating bed mode. The production of methyl halide can be integrated into downstream processes for manufacture of valuable commodity chemicals. Un proceso de halogenacion oxidante que involucrar contactar metano, un hidrocarburo halogenado de C1 o una mezcla de los mismos, con una fuente de halogeno y una fuente de oxigeno, a una proporcion molar de hidrocarburo reactivo a fuente de halogeno en una alimentacion al reactor mayor que 23/1, y/o a una proporcion molar de hidrocarburo reactivo a fuente de oxigeno en una alimentacion al reactor mayor que aproximadamente 46/1; en la presencia de un catalizador de haluro de tierra rara u oxihaluro de tierra rara, para producir un producto de C1 halogenado teniendo al menos otros halogeno segun se compara con el hidrocarburo reactivo de C1, de preferencia, cloruro de metilo. El proceso puede ser conducido ventajosamente a conversion total de fuente de halogeno y fuente de oxigeno. El proceso puede ser conducido ventajosamente esencialmente sin halogeno en la alimentacion al reactor, al emplear un paso de halogenacion de catalizador separado en un modo de pulso, columpio o lecho circulante. La produccion de haluro de metilo puede integrarse en procesos corriente abajo para fabricacion de quimicos genericos valiosos.
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The production of methyl halide can be integrated into downstream processes for manufacture of valuable commodity chemicals. Un proceso de halogenacion oxidante que involucrar contactar metano, un hidrocarburo halogenado de C1 o una mezcla de los mismos, con una fuente de halogeno y una fuente de oxigeno, a una proporcion molar de hidrocarburo reactivo a fuente de halogeno en una alimentacion al reactor mayor que 23/1, y/o a una proporcion molar de hidrocarburo reactivo a fuente de oxigeno en una alimentacion al reactor mayor que aproximadamente 46/1; en la presencia de un catalizador de haluro de tierra rara u oxihaluro de tierra rara, para producir un producto de C1 halogenado teniendo al menos otros halogeno segun se compara con el hidrocarburo reactivo de C1, de preferencia, cloruro de metilo. El proceso puede ser conducido ventajosamente a conversion total de fuente de halogeno y fuente de oxigeno. El proceso puede ser conducido ventajosamente esencialmente sin halogeno en la alimentacion al reactor, al emplear un paso de halogenacion de catalizador separado en un modo de pulso, columpio o lecho circulante. 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The process can be advantageously conducted with essentially no halogen in the feed to the reactor, by employing a separate catalyst halogenation step in a pulse, swing or circulating bed mode. The production of methyl halide can be integrated into downstream processes for manufacture of valuable commodity chemicals. 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JONES</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>OXIDATIVE HALOGENATION OF C1 HYDROCARBONS TO HALOGENATED C1 HYDROCARBONS</title><date>2008-01-28</date><risdate>2008</risdate><abstract>An oxidative halogenation process involving contacting methane, a C1 halogenated hydrocarbon, or a mixture thereof with a source of halogen and a source of oxygen, at a molar ratio of reactant hydrocarbon to source of halogen in a feed to the reactor greater than 23/1 , and/or at a molar ratio of reactant hydrocarbon to source of oxygen in a feed to the reactor greater than about 46/1; in the presence of a rare earth halide or rare earth oxyhalide catalyst, to produce a halogenated C1 product having at least one more halogen as compared with the C1 reactant hydrocarbon, preferably, methyl chloride. The process can be advantageously conducted to total conversion of source of halogen and source of oxygen. The process can be advantageously conducted with essentially no halogen in the feed to the reactor, by employing a separate catalyst halogenation step in a pulse, swing or circulating bed mode. The production of methyl halide can be integrated into downstream processes for manufacture of valuable commodity chemicals. Un proceso de halogenacion oxidante que involucrar contactar metano, un hidrocarburo halogenado de C1 o una mezcla de los mismos, con una fuente de halogeno y una fuente de oxigeno, a una proporcion molar de hidrocarburo reactivo a fuente de halogeno en una alimentacion al reactor mayor que 23/1, y/o a una proporcion molar de hidrocarburo reactivo a fuente de oxigeno en una alimentacion al reactor mayor que aproximadamente 46/1; en la presencia de un catalizador de haluro de tierra rara u oxihaluro de tierra rara, para producir un producto de C1 halogenado teniendo al menos otros halogeno segun se compara con el hidrocarburo reactivo de C1, de preferencia, cloruro de metilo. El proceso puede ser conducido ventajosamente a conversion total de fuente de halogeno y fuente de oxigeno. El proceso puede ser conducido ventajosamente esencialmente sin halogeno en la alimentacion al reactor, al emplear un paso de halogenacion de catalizador separado en un modo de pulso, columpio o lecho circulante. La produccion de haluro de metilo puede integrarse en procesos corriente abajo para fabricacion de quimicos genericos valiosos.</abstract><oa>free_for_read</oa></addata></record>
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CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title OXIDATIVE HALOGENATION OF C1 HYDROCARBONS TO HALOGENATED C1 HYDROCARBONS
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