AI Article Synopsis
- A mild difluorine treatment was applied to Cu/ZnO precatalysts, resulting in the incorporation of approximately 1.2-1.3% fluoride, which enhanced the catalyst characteristics.
- Fluorination increased the number of defect sites related to ZnO, improving the space-time yields for methanol synthesis, while the activation energy for methanol formation remained stable.
- The treatment led to a notable increase in methanol selectivity and productivity, indicating an elevation in the quantity of effective active sites on the catalysts.
Article Abstract
The influence of a mild difluorine treatment on Cu/ZnO precatalysts for methanol synthesis was investigated. It led to the incorporation of 1.2…1.3±0.1 wt % fluoride into the material. Fluorination considerably increased the amount of ZnO related defect sites on the catalysts and significantly increased the space-time yields. Although the apparent activation energy E for methanol formation from CO and H was almost unchanged, the E for the reverse water-gas shift (rWGS) reaction increased considerably. Overall, fluorination led to a significant gain in methanol selectivity and productivity. Apparently, also the quantity of active sites increased.
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| http://dx.doi.org/10.1002/anie.201811267 | DOI Listing |
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