Oxygen storage capacity of La1−xA′xBO3 perovskites (with A′=Sr, Ce; B=Co, Mn)—relation with catalytic activity in the CH4 oxidation reaction

Highly dispersed Pd on macroporous SmMn2O5 mullite for low temperature oxidation of CO and C3H8

“…[17][18][19] Despite their sufficient catalytic efficiency, the weak hydrothermal resistance and small oxygen storage capacity (OSC) lead to depletion of catalytic activity directly aer rapid aging cycles. [20][21][22] In 2012, Wang et al proposed a new type of mixed-phase oxide catalyst for NO oxidation based on Mn mullite ((Sm, Gd)Mn 2 O 5 ), which has exhibited favorable thermal and structural stability. 23 Compared with the representative LaCoO 3 perovskite catalyst, the SmMn 2 O 5 mullite catalyst has higher TWC reactivity, anti-poisoning ability and OSC.…”

Total Oxidation of Toluene on Nano-Perovskites La1-xBxCoO3 (B: Ag, Sr)

“…Generally, La 0.9 Ag 0.1 CoO 3 showed slightly higher activity than La 0.8 Sr 0.2 CoO 3 and activities of substituted samples were clearly higher than pure LaCoO 3 . This properties of substituted perovskites were observed by the group of S.Kaliaguine in case of La 1−x A' x BO 3 (A'=Sr, Ce, B=Co, Mn) used for the CH 4 oxidation reaction [18]. In our case, basing on TPD-O 2 result (Table 1), it seems that the catalytic activity was proportional with the quantity of mobile oxygen in bass temperature range (100…”

Synthesis, Characterization, and Catalytic Activity of Mn‐doped Perovskite Oxides for Three‐Way Catalysis

“…For LSCM1, the first reduction peak shifted to lower temperature and became broader compared with that of the Mn-free [19,29,30]. Another reduction peak shifted to a higher temperature around 593°C, which indicated that Mn entered the lattice structure of perovskite and influenced the reduction of its neighboring Co ions.…”

“…Perovskite catalysts with La at the A-site and Co and/or Mn at the B-site were extensively applied in oxidation reactions [8][9][10][11][12] and reduction reactions such as NO reduction [13][14][15]. Much more efforts had been made to improve the activity by partial introduction of Sr in A-position [4,[16][17][18][19], which aimed to alter the vacancy concentrations and the valence state of the B-site metals.…”