Electrical and catalytic properties of cerium–tin mixed oxides in CO depollution reaction

A study by electrical conductivity measurements of the semiconductive and redox properties of Nb-doped NiO catalysts in correlation with the oxidative dehydrogenation of ethane

“…11,12 A useful and highly sensitive technique to characterize the electronic and redox properties of oxidation catalysts is the electrical conductivity measurement, 13 a large number of papers having been dedicated to this subject in the last decade. [14][15][16][17][18][19][20][21][22][23][24][25][26] Numerous previous studies have correlated the electrical conductivity of the oxide materials with their catalytic performance in ODH reactions of ethane into ethylene, 19,[26][27][28] propane into propene, [29][30][31] n-butane into butenes and butadiene 32,33 and isobutane into isobutene. 17,20 NiO is a p-type semiconducting oxide containing an excess of lattice oxygen anions associated with the existence of positive holes as main charge carriers.…”

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

“…Ceria acts as an oxygen reservoir regulating the partial pressure of oxygen near the catalyst surface and accelerate oxygen transfers http://dx.doi.org/10.1016/j.apcatb.2014.07.007 0926-3373/© 2014 Elsevier B.V. All rights reserved. [11]. The object of this study is to explore catalytic mechanism of CO self-sustained combustion on basis of the Cu-Ce/ZSM-5 catalyst.…”

An algorithm for removing charging effects from X-ray photoelectron spectra of nanoscaled non-conductive materials

“…Among these materials are, for example, CeO 2-x and SnO 2 oxides, which are commonly used in heterogeneous catalysis as supports or promoters. It is known that conductivity of tin oxide (SnO 2 ) easily changes M a n u s c r i p t depending on the concentration of different gases over its surface [16][17][18][19]. The mechanism of such behaviouris based on the change in the charge carrier concentration in the band gap during the adsorption/desorption of donor or acceptor molecules from the gas phase [18,19].…”