Study of Lanthanum Manganate and Yttrium‐Stabilized Zirconia‐Supported Palladium Dual‐Bed Catalyst System for the Total Oxidation of Methane: A Study by  18 O 2 / 16 O 2  Isotopic Exchange | Zendy

Richard Mélissandre | Zendy; Can Fabien | Zendy; Gil Sonia | Zendy; GiroirFendler Anne | Zendy; Duprez Daniel | Zendy; Bion Nicolas | Zendy

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Study of Lanthanum Manganate and Yttrium‐Stabilized Zirconia‐Supported Palladium Dual‐Bed Catalyst System for the Total Oxidation of Methane: A Study by 18 O 2 / 16 O 2 Isotopic Exchange

Author(s) -

Richard Mélissandre,

Can Fabien,

Gil Sonia,

GiroirFendler Anne,

Duprez Daniel,

Bion Nicolas

Publication year - 2016

Publication title -

chemcatchem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.497

H-Index - 106

eISSN - 1867-3899

pISSN - 1867-3880

DOI - 10.1002/cctc.201501398

Subject(s) - manganate , lanthanum , yttrium , palladium , methane , catalysis , anaerobic oxidation of methane , cubic zirconia , inorganic chemistry , chemistry , nuclear chemistry , materials science , organic chemistry , oxide , ceramic , power (physics) , physics , battery (electricity) , quantum mechanics

A significant enhancement of the yttrium‐stabilized zirconia‐supported palladium (0.2 wt % Pd/YSZ) catalytic activity for the total oxidation of methane was achieved in a dual‐bed system by the association of LaMnO 3 +Pd/YSZ materials. The combination with the best performance was 40 wt % LaMnO 3 +60 wt % Pd/YSZ. Pd/YSZ and LaMnO 3 perovskite were characterized by using the 18 O 2 exchange technique. A Mars–van Krevelen mechanism was demonstrated over Pd/YSZ at 425 °C. Additionally, it was evidenced that LaMnO 3 activated the O 2 molecule on the YSZ oxygen vacancy sites to result in a significant increase of the oxidation rate characterized by a correlating decrease of the light‐off temperature of 65 °C.

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