CO2 hydrogenation on a metal hydride surface

Literature Information

Publication Date 2012-02-24
DOI 10.1039/C2CP23264B
Impact Factor 3.676
Authors

Shunsuke Kato, Andreas Borgschulte, Davide Ferri, Michael Bielmann, Jean-Claude Crivello, Daniel Wiedenmann, Magdalena Parlinska-Wojtan, Peggy Rossbach, Ye Lu, Arndt Remhof, Andreas Züttel


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Abstract

The catalytic hydrogenation of CO2 at the surface of a metal hydride and the corresponding surface segregation were investigated. The surface processes on Mg2NiH4 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). CO2 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 CO2 methanation reaction, the dissociation of H2 molecules at the surface is not the rate controlling step but the dissociative adsorption of CO2 molecules on the hydride surface.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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