The in-situ formation of supported hydrous ruthenium oxide in aqueous phase during HDO of lignin-derived fractions

Sustainable Production of Chemicals via Hydrotreating of CO2 and Biomass Derived Molecules Using Heterogeneous Noble Metal Oxide Catalysts

“…The DFT calculation allowed to determine the preferential adsorption of oxygen-containing substances over RuO 2 and RuOOH species. [93] As can be observed from the literature, one of the main reasons of higher activity of RuO x catalysts compared to Ru catalysts is preferential adsorption of oxygen-contained substrate or intermediates. In some cases, the oxidized species can prevent the excessive coke formation.…”

“…In our previous study we demonstrated that the adsorption of guaiacol and its hydrogenated products was preferable in the case of RuO 2 catalyst comparing to Ru catalyst. [93] In the in situ DRIFT experiments conducted during the hydrogenation of guaiacol, it was observed that the adsorption of the oxygencontaining substrate was consistently higher in the presence of the RuO 2 catalyst. Moreover, the catalytic activity of supported RuO 2 was notably more pronounced, leading to a more intensive formation of cyclohexanol and 2-methoxycyclohexanol throughout the experimental duration.…”

“…The selectivity towards desired products was higher in the case of ruthenium catalysts. [93,137,138] The exceptional hydrogenative activity of Ru-catalysts in aqueous phase has been known for a long time. [118,21] There are studies in the literature related to the solvent effect during the hydrogenation of carbonyl groups; it was demonstrated that the reaction rate of Ru catalysts in water solutions was higher than in organic phase.…”

CO2-Assisted Sugar Cane Gasification Using Transition Metal Catalysis: An Impact of Metal Loading on the Catalytic Behavior

“…C (s) + CO 2(g) = 2CO (g) (1) Since the demand on energy and therefore on the fuels has increased significantly in recent decades and further growth is predicted, the necessity of searching for effective and ecologically friendly ways to meet needs with non-fossil fuels is obvious [7,8]. There are different approaches to their utilisation, for example using them as a raw materials (but it takes using the noble metal catalysis) [9,10]. Despite a large amount of researches in this field, especially on biomass pyrolysis and on biomass conversion in supercritical water [11,12], the complex nature of a biomass of any kind [13] leads to difficulties in its conversion into valuable products (instead of burning it to produce heat) and the effective catalytic system should be found.…”