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Basic mesoporous zeolite ETS-10 supported Ni catalyst with bi-functional properties for efficiently catalyzing arenes fluorination
Catalysis Communications ( IF 3.4 ) Pub Date : 2018-08-31 , DOI: 10.1016/j.catcom.2018.08.029
Chaojie Zhu , Runsheng Shen , Zhongxue Fang , Lei Zhang , Dongfang Wu , Mengyu Wu , Tiandi Tang , Wenqian Fu , Qun Chen

Basic mesoporous zeolite ETS-10 (ETS-10-M) with high surface area (366 m2·g−1) and large mesopores volume (0.21 cm3·g−1) is synthesized by templated with an organosilan surfactant. After loading of Ni species and calcination, the obtained Ni/ETS-10-M as a bi-functional catalyst shows high activity and good product selectivity in the fluorination of N-aryl amides with N-fluorobenzenesulfonimide (NFSI). The Ni2+ species in Ni/ETS-10-M facilitate the formation of fluorine radical from NFSI, and the basic sites in Ni/ETS-10-M favour N-aryl amide transformation into corresponding carbon-radical, and reacted with fluorine radical to form the desired product. Ni/ETS-10-M catalyst exhibits good catalytic activity even it reused seven times.



中文翻译:

具有中和功能的碱性介孔沸石ETS-10负载Ni催化剂具有双功能特性,可有效催化芳烃氟化反应

通过以有机硅表面活性剂为模板,合成具有高表面积(366 m 2 ·g -1)和大中孔体积(0.21 cm 3 ·g -1)的基本介孔沸石ETS-10(ETS-10-M)。负载镍物种并煅烧后,作为双功能催化剂的所得Ni / ETS-10-M在用N-氟代苯磺酰亚胺(NFSI)氟化N-芳基酰胺时显示出高活性和良好的产品选择性。Ni / ETS-10-M中的Ni 2+物种促进了NFSI形成氟自由基,Ni / ETS-10-M中的碱性位点有利于N-芳基酰胺转化为相应的碳自由基,并与氟自由基反应形成所需的产物。Ni / ETS-10-M催化剂即使重复使用7次也显示出良好的催化活性。

更新日期:2018-08-31
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