Step response and transient isotopic labelling studies into the mechanism of CO oxidation over La0.8Ce0.2MnO3 perovskite

Abstract

Step response and transient isotopic labeling studies into the mechanism of CO oxidation over La0.8Ce0.2MnO3 perovskite Zhang, Y.; van der Zande, L.M.; Castricum, H.L.; Bliek, A. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible.

Clean Diesel Power via Microwave Susceptible Oxidation Catalysts

“…[10,29,30] The CO oxidation activity depends mainly on the B-type atom, [31] and increases for LaBO 3 type perovskites in the series of B = Cr, Fe, Mn, Co. [10] Since in our reactions the partial oxygen pressure, P O 2 = 150-250 mbar, the oxygen vacancies will be quickly neutralized. Lattice oxygen and/or surface-bound oxygen species are more likely to be incorporated in the active site.…”

Investigation of the selective catalytic reduction of nitric oxide with ammonia over Mn/TiO2 catalysts through transient isotopic labeling and in situ FT-IR studies

“…In this way, information is obtained on the elementary steps of a reaction, since the time-resolved observations allow quantitative assessment of the accumulation of species on the surface [10,11]. A few isotopic labeling studies over the Fe-zeolites (NH 3 -SCR) [12], V 2 O 5 (NH 3 -SCR) [13,14], Ag/Al 2 O 3 (HC-SCR) [15], Cr 2 O 3 (NH 3 -SCR) [16], La 0.8 Ce 0.2 MnO 3 (CO oxidation) [17], MoO 3 (CH 4 oxidation) [18] have recently been reported, but to date no transient isotopic labeling studies with in situ FT-IR have been reported to investigate the reaction mechanism over Mn/TiO 2 catalysts.…”

Application of a sensitive catalytic reactor to the study of CO oxidation over SrTiO3(100) and BaTiO3/SrTiO3(100) ferroelectric surfaces

“…The minimal elementary reaction steps needed to explain our results are reported in the proposed mechanistic scheme of Fig. (obviously, many additional or alternative steps may occur, such as those involving carbonate intermediates or product readsorption followed by isotopic exchange). Both CO and 18 O 2 dissociative adsorptions at the reduced surfaces are involved (step iii).…”