Song Lianghao, Xu Tiantian, Gao Daowei, Hu Xun, Li Cuncheng, Li Shun, Chen Guozhu
School of Chemistry and Chemical Engineering, University of Jinan, Jinan, Shandong Province, 250022, P.R. China.
School of Material Science and Engineering, University of Jinan, Jinan, Shandong Province, 250022, P.R. China.
Chemistry. 2019 May 7;25(26):6621-6627. doi: 10.1002/chem.201900700. Epub 2019 Apr 17.
CeO -based catalysts are widely studied in catalysis fields. Developing one novel synthetic approach to increase the intimate contact between CeO and secondary species is of particular importance for enhancing catalytic activities. Herein, an interfacial reaction between metal-organic framework (MOF)-derived carbon and KMnO to synthesize CeO -MnO , in which carbon is derived from the pyrolysis of Ce-MOFs under an inert atmosphere, is described. The MOF-derived carbon is found to restrain the growth of CeO crystallites under a high calcination temperature and, more importantly, intimate contact within CeO /C is conveyed to CeO /MnO after the interfacial reaction; this is responsible for the high catalytic activity of CeO -MnO towards CO oxidation.
基于CeO的催化剂在催化领域得到了广泛研究。开发一种新的合成方法以增加CeO与第二物种之间的紧密接触对于提高催化活性尤为重要。在此，描述了一种金属有机框架（MOF）衍生碳与KMnO之间的界面反应以合成CeO -MnO ，其中碳源自Ce-MOFs在惰性气氛下的热解。发现MOF衍生碳在高煅烧温度下抑制CeO微晶的生长，更重要的是，CeO /C内的紧密接触在界面反应后传递到CeO /MnO ；这是CeO -MnO对CO氧化具有高催化活性的原因。
