1. Novel high-pressure/high-temperature reactor cell for in situ and operando x-ray absorption spectroscopy studies of heterogeneous catalysts at synchrotron facilities.
- Author
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Nassereddine, Abdallah, Prat, Alain, Ould-Chikh, Samy, Lahera, Eric, Proux, Olivier, Delnet, William, Costes, Anael, Maurin, Isabelle, Kieffer, Isabelle, Min, Sophie, Rovezzi, Mauro, Testemale, Denis, Cerrillo Olmo, Jose Luis, Gascon, Jorge, Hazemann, Jean-Louis, and Aguilar Tapia, Antonio
- Subjects
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X-ray absorption , *X-ray spectroscopy , *HETEROGENEOUS catalysts , *MATERIALS science , *BIMETALLIC catalysts , *SYNCHROTRONS , *GAS distribution - Abstract
This paper presents the development of a novel high-pressure/high-temperature reactor cell dedicated to the characterization of catalysts using synchrotron x-ray absorption spectroscopy under operando conditions. The design of the vitreous carbon reactor allows its use as a plug-flow reactor, monitoring catalyst samples in a powder form with a continuous gas flow at high-temperature (up to 1000 °C) and under high pressure (up to 1000 bar) conditions, depending on the gas environment. The high-pressure/high-temperature reactor cell incorporates an automated gas distribution system and offers the capability to operate in both transmission and fluorescence detection modes. The operando x-ray absorption spectroscopy results obtained on a bimetallic InCo catalyst during CO2 hydrogenation reaction at 300 °C and 50 bar are presented, replicating the conditions of a conventional microreactor. The complete setup is available for users and permanently installed on the Collaborating Research Groups French Absorption spectroscopy beamline in Material and Environmental (CRG-FAME) sciences and French Absorption spectroscopy beamline in Material and Environmental sciences at ultra-high dilution (FAME-UHD) beamlines (BM30 and BM16) at the European Synchrotron Radiation Facility in Grenoble, France. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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