Citation: TANG Xiao-bo, NORITATSU Tsubaki, XIE Hong-juan, HAN Yi-zhuo, TAN Yi-sheng. Effect of modifiers on the performance of Cu-ZnO-based catalysts for low-temperature methanol synthesis[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(6): 704-709. shu

Effect of modifiers on the performance of Cu-ZnO-based catalysts for low-temperature methanol synthesis

1.
1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;

Corresponding author: TAN Yi-sheng,
Received Date: 27 February 2014
Available Online: 27 April 2014
Fund Project: 中国科学院山西煤炭化学研究所创新基金(2012SSTBZQT01)。 (2012SSTBZQT01)

A series of Cu-ZnO-based catalysts modified with Al, Zr, and Ce for the low-temperature methanol synthesis were prepared through co-precipitation and characterized by N₂ sorption, H₂-TPR, CO₂-TPD, N₂O titration, XRD, and high-resolution TEM; the effect of various modifiers and calcination temperature on their catalytic performance in methanol synthesis at 170 ℃ was investigated. The results showed that the Cu-ZnO-based catalyst modified with ZrO₂, among the various modifiers, exhibits the highest activity. Meanwhile, a lower calcination temperature is propitious to get a higher Cu dispersion, a smaller Cu crystal size, and a higher low temperature activity for methanol synthesis; as a result, the uncalcined catalyst exhibits excellent catalytic performance, with a productivity of 106.02 g/(kg·h) and a selectivity of 87.04% to methanol.
- modifiers,
- syngas,
- low-temperature methanol synthesis,
- calcination temperature,
- Cu-ZnO-based catalyst
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