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Title: Enhanced hydrogen production by sorption-enhanced steam reforming from glycerol with in-situ CO2 removal in a fixed-bed reactor
Author: Dou, Binlin1; Jiang, Bo1; Song, Yongchen1; Zhang, Chuan1; Wang, Chao1; Chen, Haisheng2; Du, Baoguo1; Xu, Yujie2
Source: FUEL
Issued Date: 2016-02-15
Volume: 166, Pages:340-346
Keyword: Glycerol ; Sorption-enhanced steam reforming process (SERP) ; Ni-based catalyst ; CaO based sorbent
DOI: 10.1016/j.fuel.2015.11.002
DOC Type: Article
English Abstract: For the fixed-bed reactor configuration in the sorption-enhanced steam reforming process (SERP), solid mixture of catalyst and sorbent is stationary and alternatively exposed to reaction and regeneration conditions for multi-cycles by periodically switching the feed gases for enhanced hydrogen production with in-situ CO2 removal. A NiO/NiAl2O4 catalyst was synthesized by the co-precipitation method with rising pH technique and the crystalline spinel phase of NiAl2O4 was formed under the calcination temperature of 900 degrees C. The catalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscope (SEM), thermo-gravimetric analysis (TGA), and N-2 adsorption-desorption. The non-stoichiometric thermodynamic calculation was carried out to determine the effects of temperature and in-situ CO2 removal on the enhancement of hydrogen production by SERP from glycerol at 425-700 degrees C. The multi-cycles on reaction and regeneration for hydrogen production by SERP from glycerol were performed by NiO/NiAl2O4 catalyst and CaO based sorbent in a fixed-bed reactor. The results showed that hydrogen production by SERP can be clearly divided into three periods, and the experimental gaseous products were compared with non-stoichiometric thermodynamic calculations. It is obvious that H-2 purity was greatly increased, and CO2, CO and CH4 concentrations were reduced by in-situ CO2 removal during the pre-breakthrough period. It is found that enhanced hydrogen production was mainly depended on in-situ CO2 removal. The operation durations for producing high-purity hydrogen of more than 90% were decreased with the increase of the cycles. It may due to the decrease in the reactivity of CaO based sorbent after multi-cycles reaction and regeneration. (C) 2015 Elsevier Ltd. All rights reserved.
WOS Headings: Science & Technology ; Technology
WOS Subject: Energy & Fuels ; Engineering, Chemical
WOS Subject Extended: Energy & Fuels ; Engineering
WOS Keyword Plus: H-2 PRODUCTION ; METHANE ; CATALYSTS ; SORBENT ; GASIFICATION ; CHALLENGES ; CAPTURE ; ETHANOL
Indexed Type: SCI
Funder: Natural Science Foundation of China(51476022 ; Fundamental Research Funds for the Central Universities(DUT15JJ(G)02) ; 91434129 ; 51276032)
Language: 英语
WOS ID: WOS:000365627700041
Citation statistics:
Content Type: 期刊论文
URI: http://ir.etp.ac.cn/handle/311046/112310
Appears in Collections:中国科学院工程热物理所(论文库)_期刊论文(SCI)

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description.institution: 1.Dalian Univ Technol, Sch Energy & Power Engn, Key Lab Ocean Energy Utilizat & Energy Conservat, Minist Educ, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
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