caa a22 4500 463227247 CHVBK 20180405153230.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10853-006-0751-y doi (NATIONALLICENCE)springer-10.1007/s10853-006-0751-y Particle size effects in Rh/Al2O3 catalysts as viewed from a structural, functional, and reactive perspective: the case of the reactive adsorption of NO [Elektronische Daten] [Mark Newton, Andrew Dent, Steven Fiddy, Bhrat Jyoti, John Evans] The structural-dynamic behaviour of γ-Al2O3 supported Rh nanoparticles under He, H2/He, and NO/He has been investigated using a newly developed methodology that permits dispersive EXAFS (EDE), diffuse reflectance infra red spectroscopy (DRIFTS), and mass spectrometry (MS) to be applied simultaneously to the study of gas-solid interactions. This reveals a considerably variability in nanoparticle habit (for 11Å diameter nanoparticles as a function of temperature), and between 8Å and 11Å particles in their response to NO. The selectivity (N2/(N2+N2O)) of the reactive interaction between NO and the supported Rh shows essentially no particle size dependence above 473K: it is apparent, however, that considerable differences in some aspects of the structural behaviour of the 8Å and 11Å Rh particles do nonetheless, exist. At 373<T<473K a clear divergence in structural, functional, and reactive response of the different sized supported Rh nanoparticles toward NO is observed. These observations are discussed in terms of the ability of different sized Rh particles to change structure in response to the reactive environment, the subsequent effect this has on the nitrosyl functionality that different phases may support, and the reactive pathways for NO conversion that may therefore arise. Springer Science+Business Media, LLC, 2007 Newton Mark The European Synchrotron Radiation Facility, 38043, Grenoble, France aut Dent Andrew Diamond Light Source, Chilton, Oxford, UK aut Fiddy Steven Synchrotron Radiation Source, Daresbury, Warrington, UK aut Jyoti Bhrat School of Chemistry, University of Southampton, Highfield, SO17 1BJ, Southampton, UK aut Evans John Diamond Light Source, Chilton, Oxford, UK aut Journal of Materials Science Springer US; http://www.springer-ny.com 42/10(2007-05-01), 3288-3298 0022-2461 42:10<3288 2007 42 10853 https://doi.org/10.1007/s10853-006-0751-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0751-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Newton Mark The European Synchrotron Radiation Facility, 38043, Grenoble, France aut NATIONALLICENCE 700 1- Dent Andrew Diamond Light Source, Chilton, Oxford, UK aut NATIONALLICENCE 700 1- Fiddy Steven Synchrotron Radiation Source, Daresbury, Warrington, UK aut NATIONALLICENCE 700 1- Jyoti Bhrat School of Chemistry, University of Southampton, Highfield, SO17 1BJ, Southampton, UK aut NATIONALLICENCE 700 1- Evans John Diamond Light Source, Chilton, Oxford, UK aut NATIONALLICENCE 773 0- Journal of Materials Science Springer US; http://www.springer-ny.com 42/10(2007-05-01), 3288-3298 0022-2461 42:10<3288 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer