In situ FT-IR and TPD-MS study of carbon monoxide oxidation over a CeO2/Co3O4 catalyst

Catalytic activities of CeO2(110)–2 × 1 reconstructed surface

“…6), which is~0.7 eV more stable than the bidentate state. This is consistent with the experimental result that bidentate carbonate can be converted into CO 2 at a lower temperature than the monodentate carbonate [59]. Interestingly, we further determined that the subsurface four-fold coordinated O D atom can readily diffuse upward to react with the bent CO 2 complex to form another type of monodentate carbonate species (see AD located at O A and O D sites along blue line in Fig.…”

“…CO oxidation at CeO 2 or complex oxides (e.g. CeO 2 -Co 3 O 4 ) supported metal nanoparticles such as Pt [58,59] was also determined to give rise to various carbonate species. Yu et al [60] reported that carbonate species can be identified in the presence of 0.5 Torr CO-CO 2 gas mixtures at~600°C in CO 2 electrolysis reactions in solid oxide electrochemical cells.…”

Self-sustained combustion of carbon monoxide promoted by the Cu-Ce/ZSM-5 catalyst in CO/O 2 /N 2 atmosphere

“…As shown in Fig. 6, the adsorption bands at 1036, 1597 and 1665 cm −1 are assigned to the bidentate carbonates, while the bands at 1084, 1319, 1482 and 1529 cm −1 correspond to monodentate carbonates, reflecting the intense C O stretching bands [26]. The formation of these carbonate species involves adsorption of CO molecules on the coordinative unsaturated Lewis acid-based pair sites [27].…”

Adsorption and Activation of CO on Co3O4(111) Thin Films

“…[9][10][11] Among the specific applications are, for example, the production of hydrogen by reforming of hydrocarbon oxygenates such as ethanol, 7-8, 12 the low temperature CO oxidation 1,3,[13][14][15][16][17][18][19][20] and the selective oxidation of CO (PROX, for removal of CO from the hydrogen feed of fuel cells), 6 the oxidation of methane and volatile organic compounds (VOC), 2, 21-27 and both the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) in electrocatalysis. [9][10]28 It is noteworthy that in these applications cobalt oxide often replaces noble metals such as platinum.…”