公开(公告)号：US20050222472A1

公开(公告)日：2005-10-06

申请号：US10816447

申请日：2004-04-01

申请人： Daniel Merkel ,  Hsuehsung Tung ,  Ian Shankland

发明人： Daniel Merkel ,  Hsuehsung Tung ,  Ian Shankland

IPC分类号： B01J21/18 ,  B01J23/20 ,  B01J23/22 ,  B01J27/08 ,  B01J27/125 ,  B01J27/135 ,  B01J37/26 ,  C07C17/20 ,  C07C17/21 ,  C07C19/08 ,  C07C17/08

CPC分类号： B01J27/125 ,  B01J21/18 ,  B01J27/08 ,  B01J27/135 ,  B01J37/26 ,  C07C17/206 ,  C07C17/208 ,  C07C17/21 ,  C07C19/08 ,  Y02P20/582

摘要： A process for the production of difluoromethane (HFC-32), 1,1,1-trifluoroethane (HFC-143a) and 1,1-difluoroethane (HFC-152a). In the process the following steps are employed: (a) providing a reaction vessel, (b) providing in the reaction vessel activated carbon impregnated with a strong Lewis acid fluorination catalys selected from halides of As, Sb, Al, TI, 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 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, unreactacted chlorinated hydrocarbon reactant(s), under-fluorinated intermediates, and unreacted hydrogen fluoride, and (e) separating the hydrofluorocarbon product(s) from the product stream.

摘要翻译： 制备二氟甲烷（HFC-32），1,1,1-三氟乙烷（HFC-143a）和1,1-二氟乙烷（HFC-152a）的方法。 在该过程中，采用以下步骤：（a）提供反应容器，（b）在反应容器中提供浸渍有选自As，Sb，Al，TI，In，V ，Nb，Ta，Ti，Zr和Hf，（c）通过浸渍有强路易斯酸氟化催化剂的无水氟化氢气体和氯气的活性炭活化催化剂，（d）以蒸气状态在 含有活化催化剂的反应容器，氟化氢和一种或多种选自氯氟甲烷，二氯甲烷，1,1,1-三氯乙烷，氯乙烯，1,1-二氯乙烯，1,2-二氯乙烯，1,2-二氯乙烷和1 ，1-二氯乙烷，并在一定温度下产生包含对应于氯代烃反应物的氢氟烃产物的产物流，以及一种或多种氯化氢，未反应的氯化烃 反应物，非氟化中间体和未反应的氟化氢，和（e）从产物流中分离氢氟烃产物。