摘要:
A Fischer-Tropsch process for producing hydrocarbons, comprising contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons, wherein the catalyst comprises at least one catalytically active metal selected from the group consisting of cobalt, iron, nickel and ruthenium and combinations thereof, a catalyst support, and silver. The catalyst may include a promoter. A preferred catalyst comprises cobalt, platinum and/or ruthenium and/or rhenium, and silver supported on a support selected from the group consisting of Al2O3, ZrO2, sulfated ZrO2, WO3—ZrO2, MCM-41, H-Beta, Sylopol SiO2, AlF3, fluorided Al2O3, bentonite, zeolite, TiO2, and SiO2—Al2O3, molecular sieves, and combinations thereof.
摘要:
A process for the production of a halogenated 2,2-bis(trihaloalkyl)-1, 3-dioxolane of the formula ##STR1## wherein R.sub.f is perhaloalkyl comprising a 2,2-bis(trihaloalkyl)-1,3-dioxolane in the presence of at least one of La, Ni, Sn, Zn Fe, Co or Cu is disclosed.A process for the production of a halogenated 2,2-bis(trihaloalkyl)-1,3-dioxolane of the formula ##STR2## wherein X is Cl and each Y is independently Cl or F and wherein at least one Y is F, comprising fluorinating a halogenated 2,2-bis(trifluoromethyl)-4,4,5,5-tetrachloro-1,3-dioxolane in the presence of a catalyst which is preferably Cr.sub.2 O.sub.3 is disclosed.A process for the production of a 2,2-bis(trihaloalkyl)-1,3-dioxole of the formula ##STR3## comprising dehalogenating substantially only a corresponding trans-2,2-bis(perhaloalkyl)-4,5-difluoro-4, 5-dichloro-1,3-dioxolane is disclosed.
摘要翻译:制备下式的卤化2,2-二(三卤代烷基)-1,3-二氧戊环的方法,其中Rf是包含2,2-二(三卤代烷基)-1,3-二氧戊环的全卤代烷基,其中 公开了La,Ni,Sn,ZnFe,Co或Cu中的至少一种的存在。 一种制备式IMA的卤代2,2-双(三卤代烷基)-1,3-二氧戊环的方法,其中X是Cl并且每个Y独立地是Cl或F,并且其中至少一个Y是F,包括 公开了在优选为Cr 2 O 3的催化剂存在下氟化卤代2,2-双(三氟甲基)-4,4,5,5-四氯-1,3-二氧戊环。 一种制备式“IMAGE”的2,2-双(三卤代烷基)-1,3-二氧杂环戊烯的方法,包括基本上仅脱除相应的反式2,2-双(全卤代烷基)-4,5-二氟 - 公开了4,5-二氯-1,3-二氧戊环。
摘要:
A process is disclosed for transforming a saturated reactant (e.g. 1,1,2-trichloro-1,2,2-trifluoroethane) into a saturated product (e.g. 1,1-dichloro-1,2,2,2-tetrafluoroethane) by contacting a gaseous mixture comprising said reactant with an aluminum fluoride catalyst at an elevated temperature, which is characterized using a catalyst composition consisting essentially of an aluminum fluoride prepared by the reaction of aluminum hydroxide and HF. Also disclosed is a process for producing 2-chloro-1,1,1,2-tetrafluoroethane and/or 1,1,1,2-tetrafluoroethane by hydrodechlorinating 1,1-dichloro-1,2,2,2-tetrafluoroethane produced by said transformation.
摘要:
An improved process is disclosed for the manufacture of 1,1,1,2-tetrafluoroethane, more particularly, a gas-phase reaction of 1,1,1-trifluorochloroethane with hydrogen fluoride in the presence of a catalyst, a selected metal on aluminum fluoride, and molecular oxygen which process minimizes the oxidation of liberated hydrogen chloride to chlorine and water, extends catalyst life and improves yield.
摘要:
An improved gas-phase process for the manufacture of 1,1,1-trifluorodichloroethane and/or 1,1,1,2-tetrafluorochloroethane by contacting a suitable tetrahaloethylene with hydrogen fluoride in the presence of a selected metal in combination with a high fluorine content aluminum-containing compound, the reaction being conducted under controlled conditions whereby the production of pentafluoroethane is minimized.
摘要:
An improved gas-phase process for the manufacture of 1,1,1-trifluorodichloroethane and/or 1,1,1,2-tetrafluorochloroethane by contacting a suitable tetrahaloethylene and/or pentahaloethane with hydrogen fluoride in the presence of Cr.sub.2 O.sub.3, prepared by pyrolysis of (NH.sub.4).sub.2 Cr.sub.2 O.sub.7, the reaction being conducted under controlled conditions whereby the production of pentafluoroethane is minimized.
摘要:
An improved gas-phase process for the manufacture of 1,1-difluoro-1,2-dichloroethane and 1-fluoro-1,1,2-trichloroethane by contacting a suitable trihaloethylene and/or a tetrahaloethane with hydrogen fluoride in the presence of a metal in combination with a high fluorine content alumina, the reaction being preferably conducted under controlled conditions whereby the production of 1,1,1-trifluorochloroethane is minimized.