The Active State of Supported Ruthenium Oxide Nanoparticles during Carbon Dioxide Methanation

Carbon Dioxide Methanation for [4] Intensified Reactors

Surface Science Letters Measurement of Active Carbon on Ruthenium (110): Relevance to Catalytic Methanation

The detection, by Auger electron spectroscopy (AES), of fractional monolayers of carbon on Ru is difficult because of the interference between the Ru (273 eV) and C (272 eV) transitions [I ,2]. In attempting to deal with this problem, two methods of analysis have been used. In the first, the ratio of the 273 eV signal (p-p height) to the 231 eV Ru signal is monitored [3,4]. Because the 231 eV s...

A comparative study on the kinetics of carbon dioxide methanation over bimetallic and monometallic catalysts

In this paper, Ni/Al and La-Ni/Al catalysts were prepared with a co-impregnation method and employed in carbon dioxide methanation reaction. The catalytic results showed that the catalyst with (10wt.%) of lanthanum and (20wt.%) nickel had the highest activity at low temperatures in CO2 methanation and the La-Ni/Al catalysts changed the reaction path by lowering its activation energy and consequ...

Operando atomic structure and active sites of TiO2(110)-supported gold nanoparticles during carbon monoxide oxidation.

It is well known that gold nanoparticles supported on TiO2 act as a catalyst for CO oxidation, even below room temperature. Despite extensive studies, the origin of this catalytic activity remains under debate. Indeed, when the particle size decreases, many changes may occur; thus modifying the nanoparticles' electronic properties and consequently their catalytic performances. Thanks to a state...

Selective catalytic reduction of sulfur dioxide by carbon monoxide over iron oxide supported on activated carbon

The selective reduction of sulfur dioxide with carbon monoxide to elemental sulfur was studied over ACsupported transition-metal oxide catalysts. According to the study, Fe2O3 /AC was the most active catalyst among the 4 AC-supported catalysts tested. By using Fe2O3 /AC, the best catalyst, when the feed conditions were properly optimized (CO/SO2 molar ratio = 2:1; sulfidation temperature, 400 ◦...