Superatoms and Metal-Semiconductor Motifs for Cluster Materials

Castleman, A. W.

关键词: Clusters;    catalysis;    transition metal oxides;    high-charge states;    mass spectrometry;    coulomb explosion;    ultrafast ionization;   

DOI  :  10.2172/1097117
RP-ID  :  DOE-PSU-14258-F
PID  :  OSTI ID: 1097117

学科分类：化学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

A molecular understanding of catalysis and catalytically active materials is of fundamental importance in designing new substances for applications in energy and fuels. We have performed reactivity studies and ultrafast ionization and coulomb explosion studies on a variety of catalytically-relevant materials, including transition metal oxides of Fe, Co, Ni, Cu, Ti, V, Nb, and Ta. We demonstrate that differences in charge state, geometry, and elemental composition of clusters of such materials determine chemical reactivity and ionization behavior, crucial steps in improving performance of catalysts.