| Title: | Lanthanum cobaltite perovskite supported onto mesoporous zirconium dioxide: nature of active sites of VOC oxidation |
| Author(s): | Kustov AL; Tkachenko OP; Kustov LM; Romanovsky BV; |
| Address: | "Chemistry Department of Moscow State University, Leninskie Gory 1/3, Moscow, Russia. lmk@ioc.ac.ru" |
| DOI: | 10.1016/j.envint.2011.05.002 |
| ISSN/ISBN: | 1873-6750 (Electronic) 0160-4120 (Linking) |
| Abstract: | "Novel catalytic nano-sized materials based on LaCoO(x) perovskite nanoparticles incapsulated in the mesoporous matrix of zirconia were prepared, characterized by physicochemical methods and tested in complete methanol oxidation. LaCoO(x) nanoparticles were prepared inside the mesopores of ZrO(2) by decomposition of bimetallic La-Co glycine precursor complexes. The catalysts have been studied by diffuse-reflectance FTIR-spectroscopy using such probe molecules as CO, CD(3)CN and CDCl(3) to test low-coordinated metal ions. At low temperatures of decomposition of complexes (up to 400 degrees C), low-coordinated Co(3+) ions predominate in the LaCoO(x) nanoparticles, whereas basically Co(2+) ions are found upon increasing the decomposition temperature to 600 degrees C. The novel nano-sized perovskite catalysts exhibit a very high catalytic activity in the abatement of volatile organic compounds present in air, like methanol and light hydrocarbons" |
| Keywords: | Air Pollutants/*chemistry Air Pollution/prevention & control Calcium Compounds/*chemistry Catalysis Lanthanum/*chemistry Methanol/chemistry Minerals/*chemistry Nanoparticles/chemistry Oxidation-Reduction Oxides/*chemistry Porosity Temperature Titanium/*ch; |
| Notes: | "MedlineKustov, Alexander L Tkachenko, Olga P Kustov, Leonid M Romanovsky, Boris V eng Netherlands 2011/06/15 Environ Int. 2011 Aug; 37(6):1053-6. doi: 10.1016/j.envint.2011.05.002" |
