XAFS characterization of industrial catalysts: in situ study of phase transformation of nickel sulfide

16th International Conference on X-ray Absorption Fine Structure

Wang, J.^1 ; Jia, Z.^1 ; Wang, Q.^2 ; Zhao, S.^1 ; Xu, Z.^1 ; Yang, W.^1 ; Frenkel, A.I.^1

Sinopec Shanghai Research Institute of Petrochemical Technology, Shanghai

201208, China^1

Physics Department, Yeshiva University, New York

NY

10016, United States^2

关键词: In-Situ Study;    Industrial catalyst;    Industrial conditions;    Industrial reactions;    Local environments;    Model catalysts;    Nickel sulfide;    Thermal process;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/712/1/012145/pdf
DOI  :  10.1088/1742-6596/712/1/012145

来源: IOP

【 摘 要 】

The online sulfiding process for nickel-contained catalyst often ends up with a nickel sulfide mixture in refinery plant. To elucidate the local environment of nickel and its corresponding sulfur species, a model catalyst (nickel sulfide) and model thermal process were employed to explore the possibilities for characterization of real catalysts in industrial conditions. The present investigation shows effectiveness of in situ XANES and EXAFS measurements for studying the phase stability and phase composition in these systems, which could be used to simulate real sulfiding process in industrial reactions, such as hydrodesulfurizations of oil.