作者:Yanwei Cao、Huan Zheng、Gangli Zhu、Haihong Wu、Lin He
DOI:10.1016/j.cclet.2020.05.045
日期:2021.2
was developed for aromatic amines hydrogenation with excellent activity and selectivity under relative milder conditions. The morphology, electronic and chemical properties, especially the Ru0-Ruδ+ clusters and reducible ceria were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electronic microscopy (SEM), X-ray photoelectron spectroscopy (XPS), CO2 temperature
由于广泛的应用,芳香胺的选择性加氢特别是非黄变聚氨酯的化学加成尤其受到关注,例如苯胺和双(4-氨基环己基)甲烷等化学物质。征服在选择性氢化存在的困难,在Ru 0 -Ru δ + /的CeO 2催化剂用固体沮丧路易斯对是为芳香胺氢化相对较温和的条件下具有优异的活性和选择性显影。形态,电子和化学性能,尤其是在Ru 0 -Ru δ +通过X射线衍射(XRD),透射电子显微镜(TEM),扫描电子显微镜(SEM),X射线光电子能谱(XPS),CO 2程序升温脱附(CO 2 -TPD)对簇和可还原二氧化铈进行了表征H 2程序升温还原(H 2 -TPR),H 2漫反射傅里叶变换红外光谱(H 2 -DRIFT),拉曼等。2%Ru / CeO 2催化剂显示出对环己胺的95%的良好转化率和大于99%的选择性。发现描述活动和Ru状态的火山曲线。由于周围碱性位点的“酸性位点隔离”,可以有效地抑制相邻胺分子之间的缩