Highly selective CO methanation catalysts for the purification of hydrogen-rich gas mixtures

Influence of the catalyst loading on the activity and the CO selectivity of supported Ru catalysts in the selective methanation of CO in CO2 containing feed gases

“…In that mechanism, CO 2 methanation will be inhibited as long as the CO partial pressure is sufficiently high to maintain the reaction inhibiting CO adlayer. Increasing the selectivity and activity of Ru supported catalysts has already been tried in many different ways, including the use of different support materials such as TiO 2 , Al 2 O 3 , SiO 2 [16,19], or of dopants [20,21], or by varying the Ru particle size [22]. In the latter study on Ru/Al 2 O 3 catalysts, the Ru particle sizes were varied between 7.5 and 34 nm, and a decrease in the temperature for maximum methane formation with decreasing particle size was reported.…”

Catalysts for Selective Hydrocarbon Combustion in the Presence of CO

“…High throughput technology leads to the rapid discovery and optimisation of solid state catalysts and led to promising results in the last few years [24][25][26][27][28]. Catalyst development strategy and the workflow used have been explained elsewhere [29]. The search for selective hydrocarbon combustion catalysts involves preparation of multi component mixed metal oxide libraries with the help of experimental design software Plattenbau [24] and of associated pipetting robots.…”

“…The sol-gel method allows the preparation of polynary mixed metal oxides under mild synthesis conditions with a homogeneous elemental distribution and a high surface area. Further the use of identical preparation conditions for a highly diverse set of catalysts guarantees good comparability of the obtained data [29][30][31]. Catalysts were synthesised in 2 mL GC-vials arrays, allowed to gel, dried, calcined and ground manually with a glass rod.…”

High-throughput technology for novel SO2oxidation catalysts

“…A simple strategy of the catalyst design is provided by the directed evolution concept, which was applied to the development of noble-metal-free catalysts for the selective oxidation of CO in the presence of hydrogen [39]. Other successful examples are the development of hydrocarbon-selective oxidation catalysts in the presence of CO [40] and of CO-selective methanation catalysts in the presence of CO 2 [41]. Over the last 15 years, numerous sol-gel based recipes for a broad variety of compositions have been formulated by our group and summarized in the review [42].…”