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Ethanol transformation into higher hydrocarbons over HZSM-5 zeolite: Direct detection of radical species by in situ EPR spectroscopy

Authors
Journal
Catalysis Communications
1566-7367
Publisher
Elsevier
Publication Date
Volume
27
Identifiers
DOI: 10.1016/j.catcom.2012.07.005
Keywords
  • BrøNsted Acidity
  • Coke Composition
  • In Situ Epr
  • Radicals
  • Zeolite
  • Ethylene Oligomerization

Abstract

Abstract 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.

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