Platinum catalysed aqueous methyl α-d-glucopyranoside oxidation in a multiphase redox-cycle reactor

Au/Pt/TiO2 catalysts prepared by redox method for the chemoselective 1,2-propanediol oxidation to lactic acid and an NMR spectroscopy approach for analyzing the product mixture

“…Hence, this should lead to strong Au-Pt interaction but without formation of big nanoparticles, and gold was highly dispersed on the surface of Pt NPs in contrast to the 1Au/1Pt sample. In should be also noticed that the peripheral interaction of small bimetallic Au/Pt NPs and TiO 2 proved by the DRIFTS-CO study can be the region of oxygen adsorption that is responsible for the 1,2-PD oxidation, as it was proposed in [75] for CO oxidation. The higher is the dispersion of Au/Pt NPs, the higher is the number of peripheral sites for oxygen adsorption.…”

Optimal Design of a Multifunctional Reactor for Catalytic Oxidation of Glucose with Fast Catalyst Deactivation

“…These are the crucial aspects for maximizing the technological output. For process similar to the model one, Markusse, et al (2001) found that the catalyst activity can be maintained steady by periodically switching between oxygen and nitrogen flow to a CSTR. In general, the term "periodic operation" refers to operation regimes in which one or more reactor parameters vary in time.…”

Catalyst performance for noble metal catalysed alcohol oxidation: reaction-engineering modelling and experiments

“…This work uses the electrochemical kinetic model developed by Markusse et al [8]. According to this model, with increase in oxygen concentration, the electrochemical potential of the catalyst increases, which leads to an increase in the oxidation rate as well as to catalyst deactivation due to over-oxidation.…”

“…The liquid reactant alcohol is in a batch mode and continuously converting to the product as reaction pro- Table 2 List of values of kinetic parameters Symbol Description Old parameters Pt/Gr [8,9] New parameters Pt/Gr [10] Adopted Pt/carbon k 1 (m 3 mol À1 s À1 ) Oxygen adsorption rate constant 6.5 Â 10 3…”

“…For example, alcohol oxidation takes place in two half reactions: alcohol dehydrogenation (producing electrons and protons) and oxygen reduction (consuming electrons and protons). Based on this principle Markusse et al [8] have developed a kinetic model, which uses the electrochemical potential of the catalyst to describe the experimentally observed data in the heterogeneous catalytic system. However, this model was only based on intrinsic kinetic data.…”