Highly selective metal fluoride catalysts for the dehydrohalogenation of 3-chloro-1,1,1,3-tetrafluorobutane
2011
Teinz, Katharina | Wuttke, Stefan | Börno, Fabian | Eicher, Johannes | Kemnitz, Erhard
For the first time, dehydrochlorination and dehydrofluorination reactions are studied on the same substrate, 3-chloro-1,1,1,3-tetrafluorobutane, employing nanoscopic metal fluorides AlF₃, MgF₂, CaF₂, SrF₂, and BaF₂ as catalysts that are prepared according the fluorolytic sol–gel synthesis. AlF₃ is exclusively selective toward dehydrofluorination, whereas BaF₂ is 100% selective toward dehydrochlorination. The acid–base character of the catalysts is investigated and, as a result, mechanistic proposals for the dehydrofluorination and the dehydrochlorination are given. Thus, at high conversion level, selective catalysts for both dehydrofluorination and dehydrochlorination on the same substrate have been developed.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
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