FTIR spectroscopy of carbon dioxide adsorbed on sodium- and magnesium-exchanged ETS-10 molecular sieves
Literature Information
F. X. Llabrés i Xamena, A. Zecchina
The adsorption of carbon dioxide on sodium- and magnesium-exchanged ETS-10 molecular sieves was investigated by FTIR spectroscopy. CO2 was found to adsorb reversibly onto the charge-balancing cations with formation of linear end-on adducts of the type M⋯OCO (with M = Na+ or Mg2+). Such adducts are characterised by intense ν3 bands at 2353 and 2365 cm−1, for CO2 interacting with Na+ and Mg2+, respectively. More interestingly, carbon dioxide was also found to form different carbonate-like species upon adsorption on the Na-ETS-10 (and, to a minor extent, also on Mg-ETS-10), which are the origin of the activity of ETS-10 in heterogeneous base-catalysed processes.
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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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