LING Chen, JIANG Xin, WANG Zhiyong, et al. Influence of mixing inside microreactor on microstructural evolution of Cu-ZnO catalyst[J]. CIESC Journal, 2018, (2): 718-724.
LING Chen, JIANG Xin, WANG Zhiyong, et al. Influence of mixing inside microreactor on microstructural evolution of Cu-ZnO catalyst[J]. CIESC Journal, 2018, (2): 718-724.DOI: 10.11949/j.issn.0438-1157.20170976.
The influence of mixing inside the microreactor on the microstructural evolution of Cu-ZnO catalyst was investigated by regulating the flow rate. Mixing efficiency in the microreactor was measured by Villermaux-Dushman reaction system under different flow rates
and the structures of precursor and oxide were characterized by X-ray powder diffraction (XRD)
energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The results showed that with increase of the mixing intensity
the distribution of Cu2+ and Zn2+ in precursor becomes more uniform
the fraction of aurichalcite decreases and Zn content in zincian malachite rises. The difference in the precursors acts on the oxides
leading to a more uniform Cu-Zn distribution
a better dispersion between CuO and ZnO
and the decrease of CuO size. Above study reveals
it is by the Cu-Zn distribution that the changes of mixing during the precipitation affects the subsequent product and results in the difference in Cu-ZnO catalyst microstructure.