On the presence of Fe(IV) in Fe-ZSM-5 and FeSrO3-x --unequivocal detection of the 3d4 spin system by resonant inelastic X-ray scattering.
On the presence of Fe(IV) in Fe-ZSM-5 and FeSrO3-x --unequivocal detection of the 3d4 spin system by resonant inelastic X-ray scattering.
复制标题
关于 Fe-ZSM-5 和 FeSrO3-x 中 Fe(IV) 的存在——通过共振非弹性 X 射线散射明确检测 3d4 自旋系统。
DOI:
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发表时间:
2006
影响因子:
3.3
通讯作者:
P. Glatzel
中科院分区:
文献类型:
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作者:
G. Pirngruber;J. Grunwaldt;J. V. van Bokhoven;A. Kalytta;A. Reller;O. Safonova;P. Glatzel
The contribution of a 3d(4) spin configuration to the valence electronic structure of Fe compounds can be probed via spin-selective Fe K-pre-edge absorption spectra, using resonant inelastic X-ray scattering (RIXS). The 3d(4) configuration of Fe(IV) can be unequivocally detected even in a mixture with the high-spin 3d(5) configuration of Fe(III). This is demonstrated on the perovskite FeSrO(3-x) with formal oxidation state Fe(IV). When the technique was applied to an Fe-ZSM-5 catalyst during reaction with N(2)O, no 3d(4) configuration was detected. The formation of Fe(IV) upon reaction of Fe-ZSM-5 with N(2)O can, therefore, be ruled out.