| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 49982 | Catalysis Communications | 2012 | 5 Pages |
HZSM-5 (Si/Al ratio = 40) zeolite is an efficient catalyst for ethanol transformation due to its capacity to maintain a high activity in C3 + hydrocarbons formation with time-on-stream (TOS) and this in spite of a great loss of acidity and microporosity and a high coke content deposited inside the pores of the zeolite. A study by in situ Electron Paramagnetic Resonance (EPR) spectroscopy in ethylene conversion to hydrocarbons showed that a fraction of radicals was active.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► HZSM-5(Si/Al = 40) is found to be a stably and selective catalyst. ► Ethanol transformation is accompanied by a great loss of acidity and microporosity. ► 25% of radicals formed are consumed during the ethylene oligomerization. ► The Brønsted acid sites and radicals are active sites for ethylene oligomerization. ► This study highlights the reactivity of radicals in ethylene oligomerization.
