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    • 6. 发明申请
    • CATALYTIC CONVERSION OF HYDROFLUOROALKANOL TO HYDROFLUOROALKENE
    • 氢氟烷醇对氢氟酸的催化转化
    • WO2006063069A3
    • 2006-08-17
    • PCT/US2005044298
    • 2005-12-09
    • HONEYWELL INT INCMUKHOPADHYAY SUDIPNAIR HARIDASAN KTUNG HSUEHSUNG
    • MUKHOPADHYAY SUDIPNAIR HARIDASAN KTUNG HSUEHSUNG
    • C07C17/00C07C21/18
    • C07C17/00C07C17/25C07C21/18
    • Methane is used as the selective dehydrating agent for the production of 2,3,3,3-tetrafluoro-l-propene (R1234yf) from 2,2,3,3,3-pentafluoro-l-propanol. Supported transition metal catalysts are prepared and used for this reaction with high activity. Almost 58% selectivity to R1234yf is obtained at an alcohol conversion level of 60% using unsupported Ni-mesh as the catalyst. Pd and Pt show almost similar level of conversion; however, the selectivity to the desired product is low. The activity of the metal catalyst was found to be a function of the type of support material, activated carbon showing better activity than alumina. Different important process parameters such as temperature, pressure, and contact time are studied to optimize the process. High pressure and temperature are deleterious to the rate of 1234yf formation; yet, the highest yield to 1234yf is obtained while performing a reaction at 494°C with a contact time of 23 sec.
    • 甲烷被用作从2,2,3,3,3-五氟-1-丙醇制备2,3,3,3-四氟-1-丙烯(R1234yf)的选择性脱水剂。 制备负载型过渡金属催化剂,并以高活性用于该反应。 使用未负载的Ni-网作为催化剂,在60%的醇转化率下获得对R1234yf几乎58%的选择性。 Pd和Pt显示几乎相似的转化水平; 然而,对所需产物的选择性低。 发现金属催化剂的活性是支撑材料的类型的函数,活性炭表现出比氧化铝更好的活性。 研究了不同的重要工艺参数,如温度,压力和接触时间,以优化工艺。 高压和高温对于1234yf的形成是有害的; 而在494℃下以23秒的接触时间进行反应,得到最高的1234yf产率。
    • 8. 发明专利
    • AT556043T
    • 2012-05-15
    • AT05779894
    • 2005-03-31
    • HONEYWELL INT INC
    • MERKEL DANIELSHANKLAND IANTUNG HSUEHSUNG
    • C07C17/20B01J21/18B01J23/20B01J23/22B01J27/08B01J27/125B01J27/135B01J37/26C07C17/21C07C19/08
    • A process for the production of 1,1-difluoroethane (HFC-152a) comprises: (a) providing a reaction vessel, (b) providing in the reaction vessel activated carbon impregnated with a strong Lewis acid fluorination catalyst wherein the strong Lewis acid catalyst is selected from the group consisting of halides of As, Sb, Al, Tl, In, V, Nb, Ta, Ti, Zr and Hf, (c) activating the catalyst by passing through the activated carbon impregnated with a strong Lewis acid fluorination catalyst anhydrous hydrogen fluoride gas and chlorine gas, (d) contacting, in a vapor state in the reaction vessel containing the activated catalyst, hydrogen fluoride and one or more halogenated hydrocarbons selected from the group consisting of chlorofluoromethane, dichloromethane, 1,1,1-trichloroethane, vinyl chloride, 1,1-dichloroethylene, 1,2-dichloroethylene, 1,2-dichloroethane, and 1,1-dichloroethane for a time and at a temperature to produce a product stream comprising hydrofluorocarbon product(s) corresponding to the chlorinated hydrocarbon reactant(s), and one or more of hydrogen chloride, unreacted chlorinated hydrocarbon fluoride, and (e) separating the hydrofluorocarbon product(s) from the product stream.