期刊
CHEMCATCHEM
卷 10, 期 10, 页码 2311-2321出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201701942
关键词
carbon; catalyst deactivation; combustion; green chemistry; insitu characterization
资金
- Ministry of Economy and Competitiveness of the Spanish Government
- Basque Government [IT748-13]
- Department of Education, Language Policy and Culture of the Basque Goverment [PRE_2016_2_0129]
- ERDF funds [CTQ2013-46172-P, CTQ2015-68883-R, CTQ2016-79646-P]
The characterization of coke deposited on a Ni/La2O3-alpha-Al2O3 catalyst used in the steam reforming of bio-oil has been studied by temperature programmed oxidation (TPO) coupled with different insitu techniques: thermogravimetry (TG), modulated thermogravimetry (MTG), FTIR spectroscopy with mass spectrometry (MS), Raman spectroscopy, and differential scanning calorimetry (DSC). The steam reforming of bio-oil was carried out in a reactor equipment with two steps in series, comprising bio-oil thermal treatment (500 degrees C) and subsequent reforming in a fluidized bed reactor (550-700 degrees C; and steam-to-carbon ratio, 1.5-6). TG/MS-TPO experiments identify encapsulating and filamentous coke, and a more detailed analysis using other insitu techniques enable to characterize the nature and location of 4 types of coke: (i)an encapsulating coke with aliphatic nature placed in the most superficial layers; (ii)an encapsulating coke with higher aromatic nature in inner layers; (iii)the most superficial layers of a filamentous coke, further from active sites and with a more carbonized structure compared to encapsulating coke; and (iv)an innermost and mainly polyaromatic filamentous coke with a low oxygenates content.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据