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用浸渍-原位还原法制备了Ru-Sn/H-CMK-3催化剂.以肉桂醛选择性加氢制备肉桂醇为探针反应.详细研究了催化剂的制备及反应条件对肉桂醛选择性加氢性能的影响.采用X射线粉末衍射(XRD)、比表面积(BET)、X光电子能谱(XPS)、透射电镜(TEM)等手段对催化剂结构和性质进行了表征.结果表明,介孔CMK-3碳材料能够更好地分散活性物种.添加适量的Sn(IV)有利于Ru处于电子富集状态.催化剂的主要活性物种是纳米Ru粒子,Ru和Sn之间的相互作用更加有利于C=O的活化.同时,反应温度和反应压力等条件的变化对肉桂醛选择性加氢制备肉桂醇反应也具有较大的影响.
Ru-Sn / H-CMK-3 catalyst was prepared by impregnation-in-situ reduction method and cinnamyl alcohol was selectively hydrogenated by cinnamaldehyde as the probe reaction. The preparation of catalyst and the reaction conditions were studied. Hydrogen performance.The structure and properties of the catalysts were characterized by X-ray powder diffraction (XRD), BET, X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) -3 carbon material can better disperse the active species.Adding an appropriate amount of Sn (IV) is conducive to Ru in the electron-rich state.The main active species of the catalyst is nano-Ru particles, the interaction between Ru and Sn is more conducive to C = O. At the same time, the reaction conditions such as reaction temperature and reaction pressure have great influence on the reaction of cinnamyl aldehyde with selective hydrogenation of cinnamaldehyde.