CO2 hydrogenation on a metal hydride surface
The catalytic hydrogenation of CO 2 at the surface of a metal hydride and the corresponding surface segregation were investigated. The surface processes on Mg 2NiH 4 were analyzed by in situ X-ray photoelectron spectroscopy (XPS) combined with thermal desorption spectroscopy (TDS) and mass spectrometry (MS), and time-of-flight secondary ion mass spectrometry (ToF-SIMS). CO 2 hydrogenation on the hydride surface during hydrogen desorption was analyzed by catalytic activity measurement with a flow reactor, a gas chromatograph (GC) and MS. We conclude that for the CO 2 methanation reaction, the dissociation of H 2 molecules at the surface is not the rate controlling step but the dissociative adsorption of CO 2 molecules on the hydride surface. © the Owner Societies 2012.
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Kato, S., Borgschulte, A., Ferri, D., Bielmann, M., Crivello, J.-C., Wiedenmann, D., Parlinska-Wojtan, M., Rossbach, P., Lu, Y., Remhof, A., & Zuettel, A. (2012). CO2 hydrogenation on a metal hydride surface. Physical Chemistry Chemical Physics, 14(16), 5518–5526. https://doi.org/10.1039/c2cp23264b
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WOS:000302062200019
2012
14
16
5518
5526
REVIEWED
OTHER