Effects of metal cation doping in CeO₂ support on catalytic methane steam reforming at low temperature in an electric field

Abstract

Temperature dependence of electron/ion conductivity of Pd/CeO2 and Pd/Al-CeO2 under wet conditions with application of an electric field.

Theoretical prediction by DFT and experimental observation of heterocation-doping effects on hydrogen adsorption and migration over the CeO2(111) surface

“…CeO 2 -based materials have been used for various catalytic reactions 24 including catalysis related to surface protonics in the electric field. 15,17,18 Its utilization is not limited to catalysis. Many researchers have anticipated the usefulness of CeO 2 -based materials as an electrolyte.…”

Enhanced activity of catalysts on substrates with surface protonic current in an electrical field – a review

“…9, the temperature dependence was different between the dry (Ar) and wet (Ar+H 2 O) conditions, and the conductivity enhancement in the low-temperature region was observed only in the wet condition. This phenomenon can be attributed to the increase of adsorbed water on the grain surface with decreasing temperature, which enhanced the surface proton conduction [79][80][81][82][83][84][85][86][87][88][89][90] . This result is in good agreement with the results of the operando-DRIFTS measurements.…”

Recent progress in use and observation of surface hydrogen migration over metal oxides

“…[39][40][41] This active migration is called surface protonics. It has been revealed that surface protonics plays a key role in activating the cleavage of strong bonds, as in the NRN bond in N 2 , [13][14][15][16][17]42,43 and the C-H bond in hydrocarbons, as in CH 4 [42][43][44][45][46] and methylcyclohexane (MCH). 4,5 Those activations make it possible to catalyze hydrogen production and formation of the hydrogen carrier, even at low temperatures (o500 K).…”