Investigation of the role of stabilizingagentmolecules in the heterogeneousnucleation of rhodium(0) nanoparticles onto Al-SBA-15 supports
Résumé
Interactions of stabilizingagentmolecules (HEA16Cl) with Rh(0) particles and mesoporous aluminosilic supports were studied in rhodium(0) catalysts obtained by heterogeneousnucleation. HEA16Cl/Rh(0) proximity was indirectly demonstrated by monitoring the CO coverage of metal surface using FTIR spectroscopy as well as by the examination of the thermal decomposition profiles of HEA16Cl (TGA). Complementary work performed in the absence of Rh led us to identify electrostatic interactions between HEA+ ions and the support for surfactant concentrations in the range used for catalyst preparation.