In Situ X-ray Absorption Spectroscopy Cells for High Pressure Homogeneous Catalysis

• Published in: Catalysts Vol. 12; no. 10; p. 1264
• Main Authors: Shvets, Petr V., Prokopovich, Pavel A., Dolgoborodov, Artur I., Usoltsev, Oleg A., Skorynina, Alina A., Kozyr, Elizaveta G., Shapovalov, Viktor V., Guda, Alexander A., Bugaev, Aram L., Naranov, Evgeny R., Gorbunov, Dmitry N., Janssens, Kwinten, De Vos, Dirk E., Trigub, Alexander L., Fonda, Emiliano, Leshchinsky, Mark B., Zagackij, Vladimir R., Soldatov, Alexander V., Goikhman, Alexander Yu
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.10.2022
• Subjects: Absorption spectroscopy; Aluminum; Carbon; Catalysis; Catalysts; Chemical elements; Chemical reactions; Data collection; Design; Evolutionary biology; Experiments; Fluorescence; heterogeneous catalysis; High pressure; High temperature; homogeneous catalysis; in situ measurements; operando cell; Radiation; Reagents; Spectrum analysis; Synchrotrons; Tensile strength; X ray absorption; X-ray absorption spectroscopy; X-ray spectroscopy; X-rays; XANES; Russia
• ISSN: 2073-4344; 2073-4344
• DOI: 10.3390/catal12101264

We have designed, built, and tested two cells for in situ and, potentially, operando X-ray absorption spectroscopy experiments in transmission and fluorescence modes. The cells were developed for high-pressure and high-temperature conditions to study the catalytic processes under relevant industrial conditions. Operation of the cells was tested for Ru and Rh-based homogeneous and heterogeneous catalytic systems. Using synchrotron-based in situ X-ray absorption spectroscopy we tracked the evolution of active metal species during catalytic reactions. Our setup proved that it was capable to investigate liquid-state homogeneous and heterogenous systems under elevated temperatures, high pressures of reactive gasses, and in the presence of corrosive reagents.