caa a22 4500 445870451 CHVBK 20180317145510.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10563-011-9120-1 doi (NATIONALLICENCE)springer-10.1007/s10563-011-9120-1 NO Reduction Over Noble Metal Ionic Catalysts [Elektronische Daten] [Parthasarathi Bera, M. Hegde] In last 40 years, catalysis for NOx removal from exhaust gas has received much attention to achieve pollution free environment. CeO2 has been found to play a major role in the area of exhaust catalysis due to its unique redox properties. In last several years, we have been exploring an entirely new approach of dispersing noble metal ions in CeO2 and TiO2 for redox catalysis. We have extensively studied Ce1−x MxO2−δ (M=Pd, Pt, Rh), Ce1−x−y AxMyO2−δ (A=Ti, Zr, Sn, Fe; M=Pd, Pt) and Ti1−x MxO2−δ (M=Pd, Pt, Rh, Ru) catalysts for exhaust catalysis especially NO reduction and CO oxidation, structure-property relation and mechanism of catalytic reactions. In these catalysts, lower valent noble metal ion substitution in CeO2 and TiO2 creates noble metal ionic sites and oxide ion vacancy. NO gets molecularly adsorbed on noble metal ion site and dissociatively adsorbed on oxide ion vacancy site. Dissociative chemisorption of NO on oxide ion vacancy leads to preferential conversion of NO to N2 instead of N2O over these catalysts. It has been demonstrated that these new generation noble metal ionic catalysts (NMIC) are much more catalytically active than conventional nano crystalline noble metal catalysts especially for NO reduction. Springer Science+Business Media, LLC, 2011 Exhaust catalysis nationallicence NO reduction nationallicence Solution combustion synthesis nationallicence CeO2 nationallicence TiO2 nationallicence Noble metals nationallicence Bera Parthasarathi Surface Engineering Division, National Aerospace Laboratories, 560017, Bangalore, India aut Hegde M. Solid State and Structural Chemistry Unit, Indian Institute of Science, 560012, Bangalore, India aut Catalysis Surveys from Asia Springer US; http://www.springer-ny.com 15/3(2011-09-01), 181-199 1571-1013 15:3<181 2011 15 10563 https://doi.org/10.1007/s10563-011-9120-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10563-011-9120-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bera Parthasarathi Surface Engineering Division, National Aerospace Laboratories, 560017, Bangalore, India aut NATIONALLICENCE 700 1- Hegde M. Solid State and Structural Chemistry Unit, Indian Institute of Science, 560012, Bangalore, India aut NATIONALLICENCE 773 0- Catalysis Surveys from Asia Springer US; http://www.springer-ny.com 15/3(2011-09-01), 181-199 1571-1013 15:3<181 2011 15 10563 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer