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Microreactor Coated with Mesoporous Organosilica Thin Film as a Support for Metal Complex Catalysts
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2020-10-19 , DOI: 10.1002/ejic.202000766 Sho Kataoka 1 , Shinji Inagaki 1
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2020-10-19 , DOI: 10.1002/ejic.202000766 Sho Kataoka 1 , Shinji Inagaki 1
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In this study, periodic mesoporous organosilica (PMO) thin films containing 2,2'‐bipyridine ligands (BPy‐PMO) were formed on the inner wall of a microreactor by evaporation‐induced self‐assembly approach. The obtained BPy‐PMO thin films had open mesopores ranging from 8 to 12 nm on the outermost surfaces with the thickness of approximately 50 nm. Since BPy‐PMO has a strong chelating ability to metals, the microreactor coated with BPy‐PMO film can be used as a unique support for continuous flow reactions using various metal complex catalysts. Dichlorodioxomolybdenum(VI) (MoO2Cl2) complex was immobilized in the BPy‐PMO layer; the epoxidation of cis‐cyclooctene with tert‐butyl hydroperoxide (TBHP) was evaluated in a continuous flow manner. The immobilized catalysts showed the turnover frequency higher than 3000 h–1 and the turnover number higher than 66000 at 80 °C with maintaining their catalytic activity over 26‐h experiments. These numbers are considerably high compared to Mo catalysts immobilized via conventional methods.
中文翻译：
介孔有机硅薄膜包覆的微反应器作为金属络合物催化剂的载体
在这项研究中，通过蒸发诱导的自组装方法在微反应器的内壁上形成了包含2,2'-联吡啶配体（BPy-PMO）的周期性中孔有机硅（PMO）薄膜。所获得的BPy-PMO薄膜在最外表面具有8至12 nm的开放中孔，厚度约为50 nm。由于BPy-PMO对金属具有很强的螯合能力，因此涂有BPy-PMO膜的微反应器可用作使用各种金属络合物催化剂进行连续流动反应的独特载体。将二氯二氧钼（VI）（MoO 2 Cl 2）络合物固定在BPy-PMO层中；的环氧化顺-cyclooctene与叔以连续流方式评估过氧化氢丁基酯（TBHP）。固定化的催化剂在80°C的条件下显示的周转频率高于3000 h – 1，周转数高于66000，并在26 h的实验中保持了催化活性。与通过常规方法固定化的Mo催化剂相比，这些数目相当高。
更新日期：2020-11-16
中文翻译：
介孔有机硅薄膜包覆的微反应器作为金属络合物催化剂的载体
在这项研究中，通过蒸发诱导的自组装方法在微反应器的内壁上形成了包含2,2'-联吡啶配体（BPy-PMO）的周期性中孔有机硅（PMO）薄膜。所获得的BPy-PMO薄膜在最外表面具有8至12 nm的开放中孔，厚度约为50 nm。由于BPy-PMO对金属具有很强的螯合能力，因此涂有BPy-PMO膜的微反应器可用作使用各种金属络合物催化剂进行连续流动反应的独特载体。将二氯二氧钼（VI）（MoO 2 Cl 2）络合物固定在BPy-PMO层中；的环氧化顺-cyclooctene与叔以连续流方式评估过氧化氢丁基酯（TBHP）。固定化的催化剂在80°C的条件下显示的周转频率高于3000 h – 1，周转数高于66000，并在26 h的实验中保持了催化活性。与通过常规方法固定化的Mo催化剂相比，这些数目相当高。
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