Xanes Study of Hydrothermal Mo-V-Based Mixed Oxide M1-Phase Catalysts for the (Amm)oxidation of propane
Xanes Study of Hydrothermal Mo-V-Based Mixed Oxide M1-Phase Catalysts for the (Amm)oxidation of propane
复制标题
丙烷（Amm）氧化水热Mo-V基混合氧化物M1相催化剂的Xanes研究
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
V. Guliants
中科院分区：
文献类型：
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作者：
N. R. Shiju;A. Rondinone;D. Mullins;V. Schwartz;S. Overbury;V. Guliants
The hydrothermal Mo−V-based mixed oxide catalysts possessing the M1-phase structure were investigated by XANES and in situ X-ray diffraction under ambient and dynamic redox conditions in the presence of O2 and H2 at 693 K. Under ambient conditions, XANES, with the use of model compounds, suggested oxidation states of Nb, Te, Mo, and V close to 5+, 4+, 6+, and 4+, respectively, in the bulk M1 phase. The oxidation state changes of Nb, Te, and Mo were not detected under the dynamic redox conditions employed, while the pre-edge peak of vanadium in the M1 phase exhibited small, reproducible shifts, suggesting that VOx is the active catalytic species in the bulk M1-phase catalysts for selective (amm)oxidation of propane.
