Open AccessDXAFS study on the decarbonylation process of Mo(CO) 6 in NaY supercages
Author(s) -
Shido Takafumi,
Yamaguchi Aritomo,
Suzuki Akane,
Inada Yasuhiro,
Asakura Kiyotaka,
Nomura Masaharu,
Iwasawa Yasuhiro
Publication year - 2001
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049501000589
Subject(s) - decarbonylation , chemistry , molybdenum , dimer , x ray absorption fine structure , inorganic chemistry , organic chemistry , spectroscopy , catalysis , physics , quantum mechanics
The decarbonylation process of Mo(CO) 6 in the NaY supercages was studied by means of a time resolved dispersive XAFS method during temperature programmed decarbonylation. XANES analysis demonstrated that the decarbonylation proceeded through two steps and that a stable intermediate existed between 440‐490 K. The curve fitting analysis revealed that the intermediate was a molybdenum monomer subcarbonyl species coordinated by three CO ligands and three oxygen atoms of zeolite framework. Molybdenum dimer subcarbonyl species were not observed. This study demonstrated that DXAFS technique is a powerful method to study the dynamic behaviour of the Mo carbonyl species during decarbonylation process.