A Hypothesis Regarding the Origin of Additional Surface Acidity in Solid Complexes with Same Metal Cations  

关于具有相同金属阳离子的固体复合物中额外表面酸性来源的假设

作　　者：SHAO Bo TONG Chaoli WANG Jiaqian HAN Zhongkang ZHANG Yan GE Wenfeng WANG Yong YANG Hangsheng 邵博;童超丽;王佳倩;韩仲康;张彦;葛文峰;王勇;杨杭生(硅材料与先进半导体材料国家重点实验室,材料科学与工程学院,浙江大学,浙江杭州310058;浙江衢化氟化工有限公司,浙江衢州324004;电子显微镜中心,硅材料与先进半导体材料国家重点实验室,材料科学与工程学院,浙江大学,浙江杭州310058)

机构地区：[1]State Key Laboratory of Silicon Materials and Advanced Semiconductor Materials,School of Materials Science and Engineering,Zhejiang University,Hangzhou 310058,China [2]Zhejiang Quhua Fluor-Chemistry Co.,Ltd.,Quzhou 324004,China [3]Center of Electron Microscopy,State Key Laboratory of Silicon Materials and Advanced Semiconductor Materials,School of Materials Science and Engineering,Zhejiang University,Hangzhou 310058,China

出　　处：《材料科学与工程学报》2024年第5期718-722,共5页Journal of Materials Science and Engineering

基　　金：The Key Research and Development Program of Zhejiang Province(2021C01003);National Natural Science Foundation of China(52025011,51971202,51872260 and 52171019);The Zhejiang Provincial Natural Science Foundation of China(LD19B030001,Z4080070 and LR23B030004)。

摘　　要：Based on the criteria for additional surface acidity generation in composite oxides and composite fluorides proposed by Tanabe and Kemnitz et al.A hypothesis for the origin of additional surface acidity in solid composites with the same metal cations is proposed.The surface acidsites of We analyze three types of solid composite systems,that is,CrF_(3)/Cr_(2)O_(3),MgF_(2)/MgO,and ZnF_(2)/ZnO,is systematically analyzed,which agrees with experimental results.Accordingly,the origin of additional surface acidity in these solid composites is reasonably explained,and the types of acidic sites are also predicted.根据Tanabe和Kemnitz等提出的关于复合氧化物和复合氟化物中额外表面酸性产生的判据,本研究提出了一个关于具有相同金属阳离子的固体复合物中额外表面酸性来源的假设。分析并预测了CrF_(3)/Cr_(2)O_(3)、MgF_(2)/MgO和ZnF_(2)/ZnO三类固体复合体系的酸性起源,预测结果与实验结果一致。因此,合理解释了这些固体复合物中额外表面酸性的来源,并预测了酸性位点的类型。

关 键 词：Surface acidity Solid composite Local charge imbalance 

分 类 号：TB333[一般工业技术—材料科学与工程]