2021年8月6日 · x 射线吸收近边结构 (xanes) 是一种特别适用于同时研究两种元素的技术，因为 s 的 k 边 (2472 ev) 和mo的 l 2,3 -边(2520–2625 ev)具有相似的吸收能量。 它提供了关于含金属物种的电子和局部结构的信息，并允许绘制结构-活性关系。

2021年9月17日 · The Mo K-edge X-ray absorption near edge structure (XANES) spectrum of 2D-Mo 2 C is clearly different from that of Mo 2 CT x and similar to that of β-Mo 2 C (edge positions 20001.4,...

Molybdena-containing ultrastable (HY) zeolites, prepared using several Mo precursors and activation procedures, were characterized by X-ray absorption near-edge structure (XANES) and X-ray photoele...

2022年12月1日 · Molybdenum L III-edge spectra cover the X-ray absorption near edge structure (XANES) region and Mo K-edge spectra cover the extended X-ray absorption fine structure (EXAFS) region. Tabulated XAS data are provided to support analysis of XAS data obtained for geological or environmental research.

In this work, we provide a method for the interpretation of X-ray absorption near-edge structure (XANES) data at the Mo L 2,3-edges based on a library of spectra of simple Mo compounds. From our analysis, we suggest using the L 3-edge to determine the oxidation state (in selected cases) and the L 2-edge to gain insight on the geometry around Mo ...

High-resolution Mo K-edge XANES spectra for selected model compounds with Mo (VI) (left) and MoO, Mo (III), Mo (IV) and Mo (V) (right). Structural Environments Around Molybdenum in Silicate...

We have surveyed the chemical utility of the near-edge structure of molybdenum x-ray absorption edges from the hard x-ray K-edge at 20,000 eV down to the soft x-ray M 4,5 -edges at ~230 eV. We compared, for each edge, the spectra of two tetrahedral anions, MoO 4 and MoS 42-.

在x射线 吸收谱 中, 阈值 之上60ev以内的低能区的谱出现强的吸收特性,称之为近边吸收结构(xanes)。 它是由于激发 光电子 经受周围 原子 的 多重散射 造成的。

Mo L 3-edge XANES and diffuse reflectance UV−vis spectra have been recorded for structural studies of Mo−Mg binary oxides which catalyze metathesis reactions of olefins after pretreatment with H 2 at 773 K. The XANES of reference compounds revealed that the local symmetry around the Mo ion as well as the valence state affects the spectral ...

2016年10月1日 · The XANES spectrum of the Mo-comp.2 species is at the opposite characterised by a pre-edge feature shifted by ∼1.8 eV to lower energies compared to that of the first component Mo-comp.1 (as emphasized in supporting information, Fig. S4) suggesting the formation of oxysulphide molybdenum-based species [29].