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Mg and Fe Co-Doped Perovskites for the Electrochemical Oxidative Coupling of Methane in Solid Oxide Electrolyzers /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Mg and Fe Co-Doped Perovskites for the Electrochemical Oxidative Coupling of Methane in Solid Oxide Electrolyzers /Luke H Denoyer.
作者:	Denoyer, Luke H.,
面頁冊數:	1 electronic resource (255 pages)
附註:	Source: Dissertations Abstracts International, Volume: 86-12, Section: B.
附註:	Advisors: Garzon, Fernando Committee members: Ramaiyan, Kannan P.; Datye, Abhaya; Fonseca, Fabio C.; Cerrato, Jose; Jaegers, Nicholas.
Contained By:	Dissertations Abstracts International86-12B.
標題:	Chemical engineering.
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31843779
ISBN:	9798280779853

Mg and Fe Co-Doped Perovskites for the Electrochemical Oxidative Coupling of Methane in Solid Oxide Electrolyzers /
Denoyer, Luke H.,

Mg and Fe Co-Doped Perovskites for the Electrochemical Oxidative Coupling of Methane in Solid Oxide Electrolyzers /Luke H Denoyer. - 1 electronic resource (255 pages)

Source: Dissertations Abstracts International, Volume: 86-12, Section: B.

More efficient usage of shale gas reserves and natural gas resources will allow for higher olefin yields and lower greenhouse gas emissions. The oxidative coupling of methane (OCM) is a direct pathway for converting methane to ethylene at temperatures >700 °C. The OCM process is typically regulated via the choice of catalyst, reactor conditions, temperature range and gas mixing. The electrochemical oxidative coupling of methane (E-OCM) is a modification to the OCM reaction by controlling the oxygen content via externally applied potentials to an SOEC. Perovskite oxide catalysts are useful for E-OCM due to their flexible bond networks and desired properties (conductivity, selectivity, surface area) based on synthesis/doping. This work aims to illustrate the utility of the co-doped perovskite BaMg0.33Nb0.67-xFexO3-δ (BMNF, x=0.17,0.25,0.33) for E-OCM. Validation is completed by E-OCM/OCM reaction testing and a mechanism for the unique stability of these co-doped barium niobate perovskites is determined via XPS. There is a unique tendency in BMNF for lattice incorporated Fe to remain in 3+ oxidation state with resultant Nb oxidation state accommodations occurring. The crystal structure of the BMNF material as well as its chemical stability were further explored using a computational inexpensive methodology featuring the bond-valence bond-length method which can predict a variety of material properties.

English

ISBN: 9798280779853Subjects--Topical Terms:

206267
Chemical engineering.
Subjects--Index Terms:

Electrochemistry

Mg and Fe Co-Doped Perovskites for the Electrochemical Oxidative Coupling of Methane in Solid Oxide Electrolyzers /
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520 $a More efficient usage of shale gas reserves and natural gas resources will allow for higher olefin yields and lower greenhouse gas emissions. The oxidative coupling of methane (OCM) is a direct pathway for converting methane to ethylene at temperatures >700 °C. The OCM process is typically regulated via the choice of catalyst, reactor conditions, temperature range and gas mixing. The electrochemical oxidative coupling of methane (E-OCM) is a modification to the OCM reaction by controlling the oxygen content via externally applied potentials to an SOEC. Perovskite oxide catalysts are useful for E-OCM due to their flexible bond networks and desired properties (conductivity, selectivity, surface area) based on synthesis/doping. This work aims to illustrate the utility of the co-doped perovskite BaMg0.33Nb0.67-xFexO3-δ (BMNF, x=0.17,0.25,0.33) for E-OCM. Validation is completed by E-OCM/OCM reaction testing and a mechanism for the unique stability of these co-doped barium niobate perovskites is determined via XPS. There is a unique tendency in BMNF for lattice incorporated Fe to remain in 3+ oxidation state with resultant Nb oxidation state accommodations occurring. The crystal structure of the BMNF material as well as its chemical stability were further explored using a computational inexpensive methodology featuring the bond-valence bond-length method which can predict a variety of material properties.
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