Methanol partial oxidation over palladium-, platinum-, and rhodium-integrated LaMnO 3 perovskites

Chia Liang Li; Yu Chuan Lin

Methanol partial oxidation over palladium-, platinum-, and rhodium-integrated LaMnO ₃ perovskites

化學工程學系

研究成果: Conference contribution

摘要

This study investigates methanol partial oxidation over LaMnO ₃ and LaMn _0.95B _0.05O ₃ (B=Pd, Pt, and Rh) perovskites. Their bulk and surface properties were characterized by appropriate physiochemical techniques including BET surface area measurement, XRD, EDS, XPS, H ₂-TPR, O ₂-TPD, and CH ₃OH-TPD. The characterizations showed significant differences of reducibility and oxygen activity between promoted and untainted LaMnO ₃. Such deviants resulted in diverse catalytic behaviors in methanol partial oxidation. Promoted perovskites showed higher reactivity than pure LaMnO ₃. Moreover, the redox chemistry was proposed to enhance partial oxidation route to formaldehyde while oxygen activity, particularly surface chemisorbed oxygen, played a central role in combustion. Accordingly, plausible reaction mechanism of methanol partial oxidation over LaMnO ₃ based perovskites was elucidated.

原文	English
主出版物標題	11AIChE - 2011 AIChE Annual Meeting, Conference Proceedings
出版狀態	Published - 2011 12月 1
事件	2011 AIChE Annual Meeting, 11AIChE - Minneapolis, MN, United States 持續時間: 2011 10月 16 → 2011 10月 21

出版系列

名字	AIChE Annual Meeting, Conference Proceedings

Other

Other	2011 AIChE Annual Meeting, 11AIChE
國家/地區	United States
城市	Minneapolis, MN
期間	11-10-16 → 11-10-21

All Science Journal Classification (ASJC) codes

化學工程 (全部)
化學 (全部)

其它文件與鏈接

引用此

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title = "Methanol partial oxidation over palladium-, platinum-, and rhodium-integrated LaMnO 3 perovskites",

abstract = "This study investigates methanol partial oxidation over LaMnO 3 and LaMn 0.95B 0.05O 3 (B=Pd, Pt, and Rh) perovskites. Their bulk and surface properties were characterized by appropriate physiochemical techniques including BET surface area measurement, XRD, EDS, XPS, H 2-TPR, O 2-TPD, and CH 3OH-TPD. The characterizations showed significant differences of reducibility and oxygen activity between promoted and untainted LaMnO 3. Such deviants resulted in diverse catalytic behaviors in methanol partial oxidation. Promoted perovskites showed higher reactivity than pure LaMnO 3. Moreover, the redox chemistry was proposed to enhance partial oxidation route to formaldehyde while oxygen activity, particularly surface chemisorbed oxygen, played a central role in combustion. Accordingly, plausible reaction mechanism of methanol partial oxidation over LaMnO 3 based perovskites was elucidated.",

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AU - Li, Chia Liang

AU - Lin, Yu Chuan

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N2 - This study investigates methanol partial oxidation over LaMnO 3 and LaMn 0.95B 0.05O 3 (B=Pd, Pt, and Rh) perovskites. Their bulk and surface properties were characterized by appropriate physiochemical techniques including BET surface area measurement, XRD, EDS, XPS, H 2-TPR, O 2-TPD, and CH 3OH-TPD. The characterizations showed significant differences of reducibility and oxygen activity between promoted and untainted LaMnO 3. Such deviants resulted in diverse catalytic behaviors in methanol partial oxidation. Promoted perovskites showed higher reactivity than pure LaMnO 3. Moreover, the redox chemistry was proposed to enhance partial oxidation route to formaldehyde while oxygen activity, particularly surface chemisorbed oxygen, played a central role in combustion. Accordingly, plausible reaction mechanism of methanol partial oxidation over LaMnO 3 based perovskites was elucidated.

AB - This study investigates methanol partial oxidation over LaMnO 3 and LaMn 0.95B 0.05O 3 (B=Pd, Pt, and Rh) perovskites. Their bulk and surface properties were characterized by appropriate physiochemical techniques including BET surface area measurement, XRD, EDS, XPS, H 2-TPR, O 2-TPD, and CH 3OH-TPD. The characterizations showed significant differences of reducibility and oxygen activity between promoted and untainted LaMnO 3. Such deviants resulted in diverse catalytic behaviors in methanol partial oxidation. Promoted perovskites showed higher reactivity than pure LaMnO 3. Moreover, the redox chemistry was proposed to enhance partial oxidation route to formaldehyde while oxygen activity, particularly surface chemisorbed oxygen, played a central role in combustion. Accordingly, plausible reaction mechanism of methanol partial oxidation over LaMnO 3 based perovskites was elucidated.

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