Magnetically Recyclable Cu-BTC@SiO2@Fe3O4 Catalysts and Their Catalytic Performance for the Pechmann Reaction
Magnetically Recyclable Cu-BTC@SiO2@Fe3O4 Catalysts and Their Catalytic Performance for the Pechmann Reaction
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DOI：
10.1021/ie502489q
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发表时间：
2014-09
影响因子：
4.2
通讯作者：
Qingyuan Li;Sai Jiang;Shengfu Ji;Da Shi;Junlei Yan;Yanxia Huo;Qingmin Zhang
中科院分区：
文献类型：
--
作者：
Qingyuan Li;Sai Jiang;Shengfu Ji;Da Shi;Junlei Yan;Yanxia Huo;Qingmin Zhang
采用原位法将磁性SiO2@Fe3O4纳米粒子包覆到Cu-BTC中，制备了新型磁性Cu-BTC@SiO2@ Fe 3 O 4催化剂。采用透射电子显微镜（TEM）、扫描电子显微镜（SEM）、X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）、振动样品磁强计（VSM）、N2吸附/脱附和NH3程序升温脱附（NH3-TPD）等手段对催化剂的结构进行了表征。以1-萘酚（NP）与乙酰乙酸乙酯（EAA）的Pechmann反应为例，考察了催化剂的催化活性和回收性能。结果表明，磁性Cu-BTC@SiO2@ Fe 3 O 4催化剂具有较大的比表面积和适宜的超顺磁性，对Pechmann反应具有良好的催化活性。在130 °C，24 h的反应条件下，50. 8% Cu-BTC@SiO2@ Fe 3 O 4（MCC-10）催化剂上，1-萘酚的转化率可达96%以上，产物的选择性可达98%以上。反应结束后，反应...
Novel magnetic Cu-BTC@SiO2@Fe3O4 catalysts were synthesized by encapsulating magnetic SiO2@Fe3O4 nanoparticles into Cu-BTC through an in situ method. The structure of the catalysts was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, a vibration sample magnetometer (VSM), N2 adsorption/desorption, and NH3-temperature programed desorption (NH3-TPD). The catalytic activity and recovery properties of the catalysts for the Pechmann reaction of 1-naphthol (NP) with ethyl acetoacetate (EAA) were evaluated. The results showed that the magnetic Cu-BTC@SiO2@Fe3O4 catalysts had the larger surface areas, suitable superparamagnetism, and good catalytic activity for Pechmann reaction. The conversion of 1-naphthol can reach ∼96%, and the selectivity of the production can reach ∼98% over 50.8% Cu-BTC@SiO2@Fe3O4 (MCC-10) catalyst under the reaction conditions of 130 °C and 24 h. After the reaction, the ca...