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    • 9. 发明申请
    • CATALYTIC GAS PHASE FLUORINATION OF 243DB TO 1234YF
    • 243DB到1234YF的催化气相氟化
    • WO2011077193A1
    • 2011-06-30
    • PCT/IB2009/056056
    • 2009-12-23
    • ARKEMA FRANCEWENDLINGER, LaurentPIGAMO, AnneDEUR-BERT, Dominique
    • WENDLINGER, LaurentPIGAMO, AnneDEUR-BERT, Dominique
    • C07C17/20C07C21/18
    • C07C17/206B01J23/866B01J37/26C07C17/25C07C17/42C07C21/08Y02P20/582C07C19/10C07C21/18
    • The invention provides a process for preparing 1234yf, comprising: (i) contacting 243db with hydrogen fluoride HF in gas phase in the presence of a fluorination catalyst under conditions sufficient to produce a reaction mixture; (ii) separating the reaction mixture into a first stream comprising HCl, 1234yf and a second stream comprising HF, 1233xf and 245cb; (iii) recycling at least a part of the second stream at least in part back to step (i). The invention also provides a process for preparing 1234yf, comprising: (i) contacting 243db with hydrogen fluoride HF in gas phase in the presence of a fluorination catalyst under conditions sufficient to produce a reaction mixture; (ii) separating the reaction mixture into HCl and a stream containing the fluorinated products; (iii) separating said stream containing the fluorinated products into a first stream comprising 1234yf and a second stream comprising HF, 1233xf and 245cb; (iv) recycling at least a part of the second stream at least in part back to step (i).
    • 本发明提供一种制备1234yf的方法,其包括:(i)在足以产生反应混合物的条件下,在氟化催化剂存在下,使气体中的243db与氟化氢HF接触; (ii)将反应混合物分离成包含HCl,1234yf和包含HF,1233xf和245cb的第二料流的第一料流; (iii)至少部分地将第二流的至少一部分再循环回到步骤(i)。 本发明还提供了一种制备1234yf的方法,其包括:(i)在足以产生反应混合物的条件下,在氟化催化剂存在下,将气体中的243db与氟化氢HF气相接触; (ii)将反应混合物分离成HCl和含有氟化产物的料流; (iii)将含有氟化产物的物流分离成包含1234yf的第一物流和包含HF,1233xf和245cb的第二物流; (iv)至少部分地将至少一部分第二流再循环到步骤(i)。