Catalytic Oxidation - Springer Nature

Catalytic Oxidation of Ethyl Lactate to Ethyl Pyruvate over Au-Based Catalyst Using Authentic Air as Oxidant

Highly dispersed Au nanoparticles based on Niu2013Al mixed metal oxides were produced by a simple method that is highly effective for oxidation of ethyl lactate and 88. 3% selectivity to ethyl pyruvate at 240 b0C in a continuous fixed-bed reactor, resulting in a 72. 6% conversion rate and 88. 3% selectivity to ethyl pyruvate at pyrit This work may lead to a novel approach for manufacturing more effective supported metal catalysts for the aerobic oxidation of ethyl lactate using authentic air as the oxidant. Graphical summary This dispersed Au nanoparticle catalyst was well prepared for the catalytic oxidation of ethyl lactate with authentic air.

Source link: https://doi.org/10.1007/s10563-022-09359-7

Study on SO_2 Poisoning Mechanism of CO Catalytic Oxidation Reaction on Copper–Cerium Catalyst

In the actual industrial sulfur-containing atmosphere, a CuO_2 catalyst with a CuO/CeO_2 mass ratio of 1 developed by a sol_u2013gel technique is used in the CuO_2 reaction. The Cu_u2013Ce catalyst had an initial CO conversion rate of 100%, slowly decreasing after 26 h, and this catalyst completely deactivated at about 99% within the measured time span, with the catalyst's reaction time range being almost constant at 100% within the measured time range.

Source link: https://doi.org/10.1007/s10562-021-03846-8

A DFT Study on the Mechanism of Catalytic Oxidation Desulfurization Over Ti-MWW Zeolite

The oxidation mechanism of thiophenic compounds over Ti-MWW zeolite was investigated by the DFT-D3 method in this study. According to a recent independent gradient model report, there is a strong relationship between O_u03b1 and S in transition states, with no explanation explaining why the oxidation products could be made quickly. The kinetics findings reveal that oxidation desulfurization on Ti-MWW could easily occur at room temperature.

Source link: https://doi.org/10.1007/s10876-021-02134-0

Catalytic oxidation of polystyrene to aromatic oxygenates over a graphitic carbon nitride catalyst

Plastics that have grown in production have a continuous rise in manufacturing and the difficulty of recycling plastic products have produced significant amounts of waste plastics. Here we present a photocatalytic method to oxidize polystyrene to aromatic oxygenates under visible light irradiation using heterogeneous graphitic carbon nitride catalysts. The reaction mechanism is also investigated by various analytical techniques and procedures, via polystyrene activation to produce hydroxyl and carbonyl groups across its backbone in the United Cu2013H bond oxidation process, which is followed by oxidative bond breakage via Cu2013C activation and further oxidation processes to aromatic oxygenates.

Source link: https://doi.org/10.1038/s41467-022-32510-x

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