TY - JOUR
T1 - Methanol partial oxidation over palladium-, platinum-, and rhodium-integrated LaMnO3 perovskites
AU - Li, Chia Liang
AU - Lin, Yu Chuan
N1 - Funding Information:
Valuable suggestions of Prof. C.-T. Yeh (Yuan Ze University) and anonymous reviewers are gratefully appreciated. This work was sponsored by the National Science Council (Taiwan) under grant #NSC 98-2218-E-155-006 .
PY - 2011/9/21
Y1 - 2011/9/21
N2 - This study investigates methanol partial oxidation over LaMnO3 and LaMn0.95B0.05O3 (B=Pd, Pt, and Rh) perovskites. Their surface and bulk properties were characterized by appropriate physicochemical techniques including BET surface area measurement, XRD, EDS, XPS, H2-TPR, TPO, O2-TPD, and CH3OH-TPD. Results show significant differences in reducibility and oxygen activity between promoted and untainted LaMnO3. Promoted perovskites showed higher reactivity than pure LaMnO3. Results suggest that a redox pathway enhances partial oxidation to formaldehyde while oxygen activity, particularly surface chemisorbed oxygen, plays a central role in combustion. This study also reveals a plausible reaction mechanism of methanol partial oxidation over LaMnO3-based perovskites.
AB - This study investigates methanol partial oxidation over LaMnO3 and LaMn0.95B0.05O3 (B=Pd, Pt, and Rh) perovskites. Their surface and bulk properties were characterized by appropriate physicochemical techniques including BET surface area measurement, XRD, EDS, XPS, H2-TPR, TPO, O2-TPD, and CH3OH-TPD. Results show significant differences in reducibility and oxygen activity between promoted and untainted LaMnO3. Promoted perovskites showed higher reactivity than pure LaMnO3. Results suggest that a redox pathway enhances partial oxidation to formaldehyde while oxygen activity, particularly surface chemisorbed oxygen, plays a central role in combustion. This study also reveals a plausible reaction mechanism of methanol partial oxidation over LaMnO3-based perovskites.
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U2 - 10.1016/j.apcatb.2011.07.026
DO - 10.1016/j.apcatb.2011.07.026
M3 - Article
AN - SCOPUS:80052275823
SN - 0926-3373
VL - 107
SP - 284
EP - 293
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
IS - 3-4
ER -