RSC Advances p. 113796 - 113802 (2016)
Update date:2022-08-11
Topics:
Ye, Chenliang
Guo, Cuili
Sun, Chengwei
Zhang, Yu
A series of xMn-Cu-SiO2 catalysts with different manganese contents were prepared by an ammonia-evaporation method for methyl acetate hydrogenation. The activity and stability of the catalysts were greatly improved when manganese content was 3%. Besides, physicochemical properties of these catalysts were investigated by N2 physisorption, X-ray diffraction, H2-temperature programmed reduction and X-ray photoelectron spectroscopy. The results illustrated that doping a suitable amount of manganese onto silica-supported copper catalysts produced a strong interaction between cupreous species and Mn, diminished the copper crystalline size, enlarged the copper surface area and enriched the surface Cu+ species, so as to improve the catalytic activity and stability of the 3Mn-Cu-SiO2 catalyst.
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