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- W4381488046 abstract "BACKGROUND Converting the syngas-derived dimethyl oxalate (DMO) intermediate to versatile simple diols (ethylene glycol, EG) has been deemed as a promising chemical synthesis technology, owing to the cheap, widely available raw materials. Nonetheless, finding the optimal catalyst for this route is still challenging. In this work, copper (Cu)-doped cobalt/zinc oxide (Co/ZnO)-based CoCu/ZnO catalysts for DMO selective hydrogenation to EG were successfully synthesized by the oxalic co-precipitation method. RESULTS The Cu content shows significant influence on Co dispersion and chemical features, further determining the resultant structural and morphology properties of the as-prepared samples. For DMO gas-phase hydrogenation, the CoCu20/ZnO catalyst prepared in presence of the 20.0 wt% Cu additive exhibited 100.0% DMO conversion and 93.0% EG yield, superior to that of the other catalysts due to adequate active Co0 sites released adjacent to the Cu species. Moreover, the CoCu/ZnO catalyst showed outstanding thermal stability in DMO-selective hydrogenation for >200 h. CONCLUSIONS The H2 activation ability and capability of the surface Co species depends critically on the Cu content, further regulating the reaction pathways of the DMO hydrogenation. © 2023 Society of Chemical Industry (SCI)." @default.
- W4381488046 created "2023-06-22" @default.
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- W4381488046 date "2023-07-05" @default.
- W4381488046 modified "2023-09-25" @default.
- W4381488046 title "Role of the Cu dopant in the textural and catalytic features of the <scp>Co/ZnO</scp> catalyst for dimethyl oxalate selective hydrogenation" @default.
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- W4381488046 doi "https://doi.org/10.1002/jctb.7468" @default.
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