[EN] PROCESS FOR DEHYDROCHLORINATION OF HYDROCHLOROFLUOROALKANES<br/>[FR] PROCÉDÉ DE DÉSHYDROCHLORATION D'HYDROCHLOROFLUOROALCANES
申请人:SOLVAY
公开号:WO2011121058A1
公开(公告)日:2011-10-06
A process for the selective dehydrochlorination of hydrochlorofluoroalkanes by using chloride fluorides of Ba, Ca or Sr as catalysts.
使用钡、钙或锶的氟化物作为催化剂的选择性脱氢氯氟烷的过程。
[EN] PREPARATION OF HALOGEN AND HYDROGEN CONTAINING ALKENES OVER METAL FLUORIDE CATALYSTS<br/>[FR] PRÉPARATION D'ALCÈNES CONTENANT DE L'HYDROGÈNE ET UN HALOGÈNE SUR DES CATALYSEURS DE FLUORURE MÉTALLIQUE
申请人:SOLVAY FLUOR GMBH
公开号:WO2009010472A1
公开(公告)日:2009-01-22
Halogenated alkenes, especially fluorinated alkenes can be prepared from halogenated and fluorinated alkanes, respectively, by dehydrohalogenation or dehydrofluorination in the presence of a high-surface metal fluoride or oxifluoride. Preferably, trifluoroethylene, pentafluoropropene, tetrafluorobutenes or trifluorobutadiene are prepared. Aluminium fluoride is highly suitable. The metal fluoride or oxifluoride can be applied supported on a carrier.
Dehydrofluorination reactions at Lewis acidic ACF in the presence of HSnBu3
作者:Xinzi Pan、Maria Talavera、Thomas Braun
DOI:10.1016/j.jfluchem.2022.110046
日期:2022.11
Dehydrofluorination reactions of fluoroalkanes were catalyzed by the highly Lewis acidic nanoscopic aluminum chlorofluoride (ACF, AlClxF3-x, x ≈ 0.05–0.3) in the presence of HSnBu3 as hydrogen source. Mechanistic studies suggest an initial interaction of ACF with the tin hydride instead of the fluoroalkane. MAS NMR studies provided information on the interaction of HSnBu3 with the ACF surface as well
在 HSnBu 3作为氢源的情况下,氟代烷烃的脱氟化氢反应由高路易斯酸性纳米级氯氟化铝 (ACF, AlCl x F 3- x , x ≈ 0.05–0.3) 催化。机理研究表明 ACF 与氢化锡而不是氟烷的初始相互作用。MAS NMR 研究提供了有关 HSnBu 3与 ACF 表面的相互作用以及 ACF 在没有添加剂的情况下对氟代烷烃进行 C-F 键活化的能力的信息。