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- W4289525589 abstract "The paper is devoted to the study of the highly exothermal methanol to formaldehyde oxidation process at elevated methanol load in a slit-channel microstructured reactor with porous nickel catalytic plates containing fine particles of iron-molybdenum catalyst. A 3D non-isothermal mathematical model describing the coupled processes of heat and mass transfer in the channels and plates of the reactor has been developed. The model allows for convective and diffusion heat and mass transfer in the channels; the catalytic reactions and heat transfer by thermal conductivity throughout the plates; interphase transfer. For the first time, the model takes into account the diffusion of reagents in the catalytic plates. It has been experimentally shown that methanol conversion increases with increasing temperature, decreasing linear velocity and decreasing methanol inlet concentration. The formaldehyde selectivity under test conditions is 99.9–100 %. The temperature at the outlet of channels is almost the same as the temperature of the side surface of the reactor. The developed model is adequate to the process in the whole range of conditions investigated. It is theoretically shown that channels of the maximum possible width and height 0.28–0.6 mm are the most efficient in terms of formaldehyde yield. Increasing the channel height to 0.6 mm makes it possible to reduce catalyst load in the reactor almost without loss in formaldehyde yield compared to the minimum possible channel height." @default.
- W4289525589 created "2022-08-03" @default.
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- W4289525589 date "2023-01-01" @default.
- W4289525589 modified "2023-09-27" @default.
- W4289525589 title "Experimental and theoretical investigation of the oxidation of methanol to formaldehyde in a microstructured slit-type catalytic reactor" @default.
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- W4289525589 doi "https://doi.org/10.1016/j.cej.2022.138368" @default.
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