Affiliation:
1. Laboratory for Industrial Chemistry and Reaction Engineering (TKR), Åbo Akademi, Henrikinkatu 2, 20500 Turku, Finland
Abstract
A combination of transient methods in a laboratory-scale trickle bed reactor and attenuated total reflection (ATR)-infrared spectroscopy was applied to gain insight into the reaction mechanism of the direct synthesis of hydrogen peroxide (DSHP) on a commercial 5 %Pd/C catalyst, with water and methanol used as solvents. During the transient studies, after the switch from water to methanol, an oscillatory pattern was observed in which methoxy and hydroxymethyl species were observed prior to the peroxide species. From the specific position and the maxima in the intensities of these species over time, an augmented reaction scheme for the DSHP in methanol was proposed, in which methanol can form hydroxymethyl species which act as co-catalysts to reduce absorbed oxygen species.
Subject
Physical and Theoretical Chemistry,Catalysis,General Environmental Science
Reference38 articles.
1. Goor, G., Glenneberg, J., Jacobi, S., and Dadabhoy, J. (2019). E Candido in Hydrogen Peroxide. Ullmann’s Encyclopedia of Industrial Chemistry Weihnheim, Wiley.
2. Direct oxidation of H2 to H2O2 over Pd/Ga2O3 catalyst under ambient conditions: Influence of halide ions added to the catalyst or reaction medium;Samanta;Appl. Catal. A Gen.,2007
3. Direct synthesis of H2O2 on PdZn nanoparticles: The impact of electronic modifications and heterogeneity of active sites;Wilson;J. Catal.,2018
4. Effect of halide and acid additives on the direct synthesis of hydrogen peroxide using supported gold-palladium catalysts;Ntainjua;ChemSusChem,2009
5. Mechanistic aspects in the direct synthesis of hydrogen peroxide on PdAu catalyst from first principles;Li;Catal. Today,2015
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