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

被引：12
作者：
Ben Tayeb, Karima [1 ,2 ]
Pinard, Ludovic [2 ]
Touati, Nadia [1 ]
Vezin, Herve [1 ]
Maury, Sylvie [3 ]
Delpoux, Olivier [3 ]
机构：
[1] Univ Sci & Technol Lille, UMR 8516, LASIR, F-59655 Villeneuve Dascq, France
[2] Univ Poitiers, UMR 7285, IC2MP, F-86022 Poitiers, France
[3] IFP Energies Nouvelles, F-69390 Vernaison, France
来源：
CATALYSIS COMMUNICATIONS | 2012年 / 27卷
关键词：
Bronsted acidity; Coke composition; In situ EPR; Radicals; Zeolite; Ethylene oligomerization; CATALYTIC CONVERSION; FERMENTATION BROTHS; AQUEOUS-ETHANOL; ACID PROPERTIES; MTO REACTION; METHANOL; DEACTIVATION; MECHANISM; RECOVERY; GASOLINE;
D O I：
10.1016/j.catcom.2012.07.005
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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. (C) 2012 Elsevier B.V. All rights reserved.
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收藏
页码：119 / 123
页数：5
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