Experimental Evidence of Selective Heating of Molecules Adsorbed in Nanopores under Microwave Radiation
| Autor: | G Wittaker, Julian E. Santander, W. C. Conner, A Harrison, J Ollivier, Scott M. Auerbach, Hervé Jobic, G. Giriat |
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| Přispěvatelé: | Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC) |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Materials science
Chemical substance General Physics and Astronomy Nanotechnology 02 engineering and technology [CHIM.CATA]Chemical Sciences/Catalysis 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences [SDE.ES]Environmental Sciences/Environmental and Society 0104 chemical sciences Nanopore chemistry.chemical_compound Adsorption chemistry Chemical physics Quasielastic neutron scattering Molecule 0210 nano-technology Science technology and society Benzene Microwave |
| Zdroj: | Physical Review Letters Physical Review Letters, American Physical Society, 2011, 106, pp.517. ⟨10.1103/PhysRevLett.106.157401⟩ |
| ISSN: | 0031-9007 1079-7114 |
| Popis: | 15 Jobic, H. Santander, J. E. Conner, W. C., Jr. Wittaker, G. Giriat, G. Harrison, A. Ollivier, J. Auerbach, Scott M.; We have performed in situ quasielastic neutron scattering (QENS) measurements on zeolite-guest systems under microwave irradiation, for comparison with corresponding simulations. Both experiment and simulation reveal selective heating of methanol in silicalite, but little to no heating of benzene in silicalite. Effective translational and rotational temperatures extracted from QENS data under microwave heating were found to depend on microwave power. In agreement with simulation, QENS rotational temperatures significantly exceed translational ones at high microwave power, thus providing the first microscopic proof for athermal effects in microwave-driven nanopores. |
| Databáze: | OpenAIRE |
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