Results 41 to 50 of about 167,718 (203)

Structural Studies of Aluminated form of Zeolites—EXAFS and XRD Experiment, STEM Micrography, and DFT Modelling

Molecules, 2021
In this article, the results of computational structural studies on Al-containing zeolites, via periodic DFT + D modelling and FDM (Finite Difference Method) to solve the Schrödinger equation (FDMNES) for XAS simulations, corroborated by EXAFS (Extended ...
Gabriela Jajko, Paweł Kozyra, Maciej Strzempek, Paulina Indyka, Marcin Zając, Stefan Witkowski, Witold Piskorz   +6 more
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Deciphering the Local Environment of Electrocatalytic Metal Sites with X‐ray Absorption Fine Structure

Small Structures
Electrocatalysis plays a pivotal role in energy conversion and holds significant promise for the development of new energy sources. Understanding the intricate atomic‐level interplay between active sites and electrocatalytic activity is essential for ...
Nan Zhang, Jianqiang Wang
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Investigation of the structure activity relationship of palladium-bismuth catalyst in acetylene hydrogenation

He jishu, 2023
BackgroundEthylene is an important raw material in petrochemical industry. Semi-hydrogenation of acetylene in an ethylene is an industrially important process.
TAO Xin, ZHAO Gui, LI Yunan, TIAN Chen, DU Meng, GUO Lingling, NAN Bing, HUANG Yuying, LI Lina   +8 more
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X-ray Absorption Spectroscopy Study of Iron Site Manganese Substituted Yttrium Orthoferrite

Molecules, 2022
In this work, manganese (Mn)-doped YFeO3, i.e., YFMxO powders with 0 ≤ x ≤ 0.1, was synthesized by a hydrothermal method to study the influences of doping on its structural, morphological, optical, magnetic, and local electrical properties.
Turghunjan Gholam, Hui-Qiong Wang
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Design and application of an electrochemical cell for operando X-ray diffraction and absorption studies for electrocatalysts

Journal of Synchrotron Radiation
The development of advanced catalysts for various electrochemical reactions necessitates precise characterization of their structure and dynamic evolution.
Jiajun Chen, Zhenzhong Li, Huiyan Zeng, Liting Deng, Long Gu, Chao Wang, Chunzhen Yang, Dongbai Sun   +7 more
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Isotopic Effect In Extended X-Ray-Absorption Fine Structure of Germanium

Physical Review Letters, 2008
Extended x-ray absorption fine structure has been measured on two powdered samples of (70)Ge and (76)Ge as a function of temperature from 20 to 300 K. The effect of isotopic mass difference on the amplitude of relative atomic vibrations is neatly evidenced by the temperature dependence of the difference of Debye-Waller factors.
Purans, Juris, Afify, Nasser, Dalba, Giuseppe, Grisenti, Rolly, S. de Panfilis, A. Kuzmin, V. I. Ozhogin, F. Rocca, Sanson, Andrea, S. I. Tiutiunnikov, Fornasini, Paolo   +10 more
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Near-Edge X-Ray Absorption Fine-Structure Investigation of Graphene [PDF]

Physical Review Letters, 2008
We report the near-edge x-ray absorption fine structure (NEXAFS) spectrum of a single layer of graphite (graphene) obtained by micromechanical cleavage of Highly Ordered Pyrolytic Graphite (HOPG) on a SiO2 substrate. We utilized a PhotoEmission Electron Microscope (PEEM) to separately study single- double- and few-layers graphene (FLG) samples.
Pacilé, D., Papagno, M., Rodríguez, A. Fraile, Grioni, M., Papagno, L., Girit, Ç. Ö., Meyer, J. C., Begtrup, G. E., Zettl, A.   +8 more
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Operando X-ray absorption spectra and mass spectrometry data during hydrogenation of ethylene over palladium nanoparticles

Data in Brief, 2019
We report the series of Pd K-edge X-ray absorption spectra collected during hydrogenation of ethylene with variable ethylene/hydrogen ratio over carbon supported palladium nanoparticles.
Aram L. Bugaev, Alexander A. Guda, Ilia A. Pankin, Elena Groppo, Riccardo Pellegrini, Alessandro Longo, Alexander V. Soldatov, Carlo Lamberti   +7 more
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The Crystallization Process of Vaterite Microdisc Mesocrystals via Proto-Vaterite Amorphous Calcium Carbonate Characterized by Cryo-X-ray Absorption Spectroscopy

Crystals, 2020
Investigation on the formation mechanism of crystals via amorphous precursors has attracted a lot of interests in the last years. The formation mechanism of thermodynamically meta-stable vaterite in pure alcohols in the absence of any additive is less ...
Li Qiao, Ivo Zizak, Paul Zaslansky, Yurong Ma   +3 more
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Arsenic mineral and compound data as analyzed by X-ray absorption spectroscopy and X-ray diffraction

Data in Brief
Here, we present As K-edge X-ray absorption spectroscopy (XAS) data for 28 arsenic minerals and compounds. These minerals and compounds were obtained from mineral dealers, museum collections, and chemical suppliers, and were positively identified by ...
Valerie A. Schoepfer, Heather E. Jamieson, Matthew B.J. Lindsay   +2 more
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