| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 50676 | Catalysis Communications | 2012 | 6 Pages |
Three ZSM-5 zeolites with different crystal sizes were prepared and characterized by SEM, XRD, adsorption/desorption of N2, NH3-TPD, Py-IR and TG-DTA techniques. The results show that the acidic properties of HZSM-5 catalysts are very similar, but their textual properties are strongly influenced by crystal size. Their catalytic performances for the ethanol conversion to propylene were investigated in a continuous flow fixed-bed micro-reactor. In comparison with the large-sized HZSM-5, the small-sized HZSM-5 shows higher propylene selectivity and better stability, which reveals that decreasing the crystal size of zeolite is of benefit to ethanol conversion to propylene.
Graphical abstractDifferent crystal size HZSM-5 catalysts for ethanol conversion to propylene were successfully prepared by different crystallization methods, and the catalyst stability and propylene selectivity are strongly influenced by the crystal size.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Different crystal size ZSM-5 zeolites were successfully synthesized. ► The prepared HZSM-5 catalysts have similar Si/Al2 ratio and acidity. ► The propylene selectivity is strongly influenced by the zeolite crystal size. ► The zeolite crystal size affects greatly the catalyst stability.
