Quantitative analysis of active oxygen for soot oxidation over Ag/ZrO2: Characterization with temperature-programmed reduction by NH3

Enhancing Hybrid Direct Carbon Fuel Cell anode performance using Ag2O

“…The performance of catalyzed (Ag and Ag 2 O) and un-catalyzed carbon black was determined at 800ºC with pure N 2 at the anode (Figure 16 Ag-ZrO suggested there exist two oxygen surface species on silver, a strong oxidative capacity species which cleaved C-C bonds directly, and a lower oxidative capacity species which reacted with intermediate species on the soot surface following their formation. These species could not be positively identified but were suggested to be peroxide and/or superoxide species [30,35].…”

Silver nanoparticles supported on zirconia–ceria for the catalytic wet air oxidation of methyl tert-butyl ether

“…23 Similar behavior was reported by Zhenping et al 24 Oxygen chemisorption on silver surface as a pretreatment generates various oxygen species such as bulk-oxygen (O b ) and subsurface oxygen (O g ), which are responsible of the higher catalytic activity in hydrocarbon, formaldehyde (methanal) and soot oxidation. [24][25][26] On the other hand, ceria with its ability to store and release oxygen, plays an important role in catalysis, participating directly in the conversion of environmentally sensitive molecules such as phenol and acetic acid into carbon dioxide, water and/or intermediate products. Ceria as a support has oxygen storage capacity (OSR) and redox properties.…”

“…It was also found that the tetragonal phase of zirconia oxide that is thermally stable at high temperatures plays an important role on oxidation reactions due to its high oxygen ion conductivity properties. 26,32 The critical step in the effective development of CWAO is the preparation of an efficient and durable catalyst. Therefore, this paper deals with the study of the catalytic properties of Ag supported on ZrO 2 -CeO 2 for the catalytic wet oxidation degradation of MTBE using a batch reactor unit.…”

Methanol oxidative decomposition over zirconia supported silver catalyst and its reaction mechanism

“…Regarding the effect of Ag on the catalytic oxidation reaction, several studies were reported, especially for the soot oxidation [45][46][47]. Aneggi et al reported the high catalytic activity of Ag/ZrO 2 comparable to Ag/CeO 2 for soot oxidation, and also Nanba et al revealed the presence of active oxygen species on Ag species for soot oxidation over Ag/ZrO 2 by analysis of temperatureprogrammed reduction by NH 3 (NH 3 -TPR).…”