Chemical Speciation by Quick-XAS and Raman Spectroscopy: Validation of Two Cells for in situ Time-Resolved Monitoring of the Impregnation and Drying of CoMoP/Al2O3 Catalysts,ChemCatChem

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Chemical Speciation by Quick-XAS and Raman Spectroscopy: Validation of Two Cells for in situ Time-Resolved Monitoring of the Impregnation and Drying of CoMoP/Al2O3 Catalysts
ChemCatChem ( IF 3.8 ) Pub Date : 2023-02-03 , DOI: 10.1002/cctc.202201440
Beatriz Barata ₁ , Christèle Legens ₂ , Elodie Devers ₃ , Olivier Delpoux ₃ , Laurent Barthe ₄ , Olga Roudenko ₅ , Valérie Briois ₄

Affiliation

Hydrodesulfurization catalysts: This work presents the in situ EXAFS and ex situ Raman monitoring of the impregnation and drying of CoMoP hydrodesulfurization catalysts. Two cells were developed, which allow for the reproduction of the laboratory preparation conditions. The EXAFS spectra revealed that the pristine Strandberg's HPA (H_xP₂Mo₅O₂₃^(6−x)−) partially decomposes upon maturation and then fully decomposes upon drying, a two-step drying mechanism being proposed.

中文翻译：

通过 Quick-XAS 和拉曼光谱进行化学形态分析：验证用于原位时间分辨监测 CoMoP/Al2O3 催化剂浸渍和干燥的两个电池

加氢脱硫催化剂：这项工作介绍了CoMoP 加氢脱硫催化剂的浸渍和干燥的原位EXAFS 和非原位拉曼监测。开发了两个细胞，允许复制实验室准备条件。EXAFS 光谱表明，原始 Strandberg 的 HPA (H _x P ₂ Mo ₅ O ₂₃^(6−x)− ) 在成熟时部分分解，然后在干燥时完全分解，提出了一种两步干燥机制。

更新日期：2023-02-03

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