Catalysis Letters

, Volume 58, Issue 2, pp 163–165

Comments on “The effect of ZnO in methanol synthesis catalysts on Cu dispersion and the specific activity” [by T. Fujitani and J. Nakamura]


  • K.C. Waugh
    • Department of ChemistryUMIST

DOI: 10.1023/A:1019025816831

Cite this article as:
Waugh, K. Catalysis Letters (1999) 58: 163. doi:10.1023/A:1019025816831


Fujitani and Nakamura recently reported on the effect of ZnO on Cu/ZnO methanol synthesis catalysts (Catal. Lett. 56 (1998) 119). Having measured the methanol synthesis activity of a series of Cu/ZnO catalysts of different Cu/ZnO ratios, they reported a linear relationship between the copper metal area and the methanol yield (implying a fixed value of the copper specific activity) and paradoxically they also reported a volcano-type relationship between the copper specific activity in methanol synthesis and the ZnO content. This paradox is resolved by showing that their Cu/ZnO catalysts fall into two groups: (i) the low-surface-area copper catalysts which have a specific activity of 10 mg CH3OH/m2-Cu h and (ii) the high-surface-area copper catalysts which have specific activity of 14.8 mg CH3OH/m2-Cu h. These different specific activities derive from different surface morphologies of the copper in these catalysts.

methanol synthesiscopper metal areacopper morphologycopper specific activity
Download to read the full article text

Copyright information

© Kluwer Academic Publishers 1999