研究了氢氟酸后处理对 silicalite-1 催化环己酮肟气相Beckmann重排反应性能的影响. 结果表明,经适当浓度的氢氟酸溶液处理后,催化剂的选择性和稳定性都明显改善. 其中, silicalite-1 原粉先经硝酸铵预处理后再进行氢氟酸后处理所得到的催化剂催化性能最好,反应53 h后环己酮肟的转化率仍保持在96%左右,己内酰胺的选择性高达96.1%. XRD, FT-IR和 29Si MAS NMR的结果表明,较高的具有氢键相互作用的硅羟基与孤立硅羟基的比例值对环己酮肟气相Beckmann重排反应有利,同时, silicalite-1 表面硅原子的排布方式对该反应也有重要影响.
参考文献
[1] | 毛东森,卢冠忠,陈庆龄,卢文奎,谢在库.固体酸催化环己酮肟Beckmann重排制己内酰胺研究进展[J].化工进展,2000(03):25-29. |
[2] | 陶伟川,毛东森,陈庆龄.分子筛催化环己酮肟气相Beckmann重排制己内酰胺研究新进展[J].石油化工,2004(05):475-480. |
[3] | 尹双凤,张法智,徐柏庆.钛硅分子筛催化气相环己酮肟贝克曼重排反应[J].催化学报,2002(04):321-324. |
[4] | Kitamura M;Ichihashi H;Tojima H .[P].US 5403801,1995. |
[5] | Kitamura M;Tojima H;Ichihashi H .[P].EP 494535,1992. |
[6] | 陶伟川,毛东森,陈庆龄,胡英.Silicalite-1的后处理对其催化环己酮肟气相Beckmann重排反应性能的影响[J].催化学报,2005(05):417-422. |
[7] | Heitmann G P;Dahlhoff G;Holderich W F .[J].Journal of Catalysis,1999,186(01):12. |
[8] | Tao W Ch;Mao D S;Xia J C;Chen Q L,Hu Y .[J].Chemistry Letters,2005,34(04):472. |
[9] | Bolis V;Bordiga S;Lamberti C;Zecchina A,Carati A,Rivetti F,Spanò G,Petrini G .[J].Microporous and Mesoporous Materials,1999,30(01):67. |
[10] | Forni L;Fornasari G;Giordano G;Lucarelli C,Katovic A,Trifirò E,Perri C,Nagy J B .[J].Chemical Physics and Physical Chemistry,2004,6(08):1842. |
[11] | Sato H;Ishii N;Hirose K;Nakamura S .[J].Studies in surface science and catalysis,1986,28:755. |
[12] | Sato H;Hirose K;Takatsuki T .[J].Chemistry Letters,1993,22(10):1765. |
[13] | Ichihashi H;Sugita K;Yako M .[P].US 6303099B1,2001. |
[14] | Heitmann G.P.;Dahlhoff G.;Niederer J.P.M.;Holderich W.F. .Active Sites of a [B]-ZSM-5 Zeolite Catalyst for the Beckmann Rearrangement of Cyclohexanone Oxime to Caprolactam[J].Journal of Catalysis,2000(1):122-129. |
[15] | Ko Y H;Kim M H;Kim S J;Uh Y S,Seo G,Kim M-Y.[J].Chemical Communications,2000(10):829. |
[16] | Sato H;Hirose K;Nakamura Y .[J].Chemistry Letters,1993,22(12):1987. |
[17] | Barrett D A;Brown V A;Watson R C;Davies M C,Shaw P N,Ritchie H J,Ross P .[J].Journal of Chromatography A,2001,905(1-2):69. |
[18] | Khler J;Kirkland J J .[J].Journal of Chromatography A,1987,385:125. |
[19] | Nawrocki J .THE SILANOL GROUP AND ITS ROLE IN LIQUID CHROMATOGRAPHY [Review][J].Journal of chromatography, A: Including electrophoresis and other separation methods,1997(1/2):29-71. |
[20] | Hay D G;Jaeger H;West G W .[J].Journal of Physical Chemistry,1985,89(07):1070. |
[21] | Ghosh A K;Kydd R A .[J].Journal of Catalysis,1987,103(02):399. |
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