DOI: 10.1016/j.fuproc.2019.106316
论文题名: Dual catalyst-sorbent role of dolomite in the steam reforming of raw bio-oil for producing H2-rich syngas
作者: Valle B. ; García-Gómez N. ; Remiro A. ; Bilbao J. ; Gayubo A.G.
刊名: Fuel Processing Technology
ISSN: 3783820
出版年: 2020
卷: 200 语种: 英语
英文关键词: Bio-oil
; CO2 capture
; Dolomite
; Hydrogen
; Steam reforming
Scopus关键词: Calcite
; Calcium carbonate
; Carbon dioxide
; Catalysts
; Chemical shift
; Gas fuel manufacture
; Hydrogen
; Magnesia
; Phenols
; Steam
; Synthesis gas
; Water gas shift
; Bio oil
; CO concentrations
; CO2 capture
; Composition changes
; Dolomite
; Hydrodeoxygenation
; Substituted phenol
; Water gas shift (WGS) reaction
; Steam reforming
英文摘要: The dual role that low-cost dolomite plays as a catalyst and CO2 sorbent in the steam reforming of raw bio-oil has been studied. The reactions were performed in a continuous regime at 700 °C and steam/carbon ratio of 3. The results show that calcined dolomite is a feasible catalyst for producing a H2-rich syngas from raw bio-oil, with efficient CO2 retention and positive impact on the CO2 global emissions balance. Reforming of oxygenates (mainly acids, alcohols and aldehydes) and cracking/hydrogenation of poly-substituted phenols are prevailing reactions during the effective CO2 capture, catalyzed by the CaO and MgO in the dolomite. Consequently, around 40% of bio-oil is converted into a CO2-free syngas with H2 and CO concentrations above 65 vol% and below 20 vol%, respectively, whereas the liquid product is primarily composed of phenol and alkyl-phenols. Products composition changes along reaction by two causes: i) saturation of dolomite by CaO carbonation, which drastically changes the liquid product composition leading to the formation of aromatics by alkyl-phenols hydrodeoxygenation (HDO), activated by the CaCO3 and Fe impurities; ii) coke deposition which involves a progressive decrease in H2/CO ratio (6–2.5 in 4 h) by deactivation of steam reforming and water-gas-shift reactions. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158536
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Department of Chemical Engineering, University of the Basque Country (UPV/EHU), P.O. Box 644, Bilbao, 48080, Spain
Recommended Citation:
Valle B.,García-Gómez N.,Remiro A.,et al. Dual catalyst-sorbent role of dolomite in the steam reforming of raw bio-oil for producing H2-rich syngas[J]. Fuel Processing Technology,2020-01-01,200