Modulating and controlling active species dispersion over Ni-Co bimetallic catalysts for enhancement of hydrogen production of ethanol steam reforming | |
Department | OSSO国家重点实验室 |
Zhao XX(赵夏夏)1,2; Lu GX(吕功煊)1; Lv GX(吕功煊) | |
The second department | erc国家工程研究中心 |
2016 | |
Source Publication | International Journal of Hydrogen Energy |
ISSN | 0360-3199 |
Volume | 41Issue:5Pages:3349-3362 |
Abstract | In this study, an active Ni–Co/Al2O3 catalyst for steam reforming of ethanol (SRE) was reported. Results indicated that the dispersion of active species can be tuned by preparation methods, i.e., by step—step impregnation method and co-impregnation method separately. By comparing the activities and stabilities in the temperature range of 250–650 °C under atmospheric pressure, and correlating the characterization results of H2 chemisorption, XRD, HRTEM and TGA, we found the catalytic performance were dependent on the surface species dispersion over support which could be modulated by preparation process. The ethanol conversion on Ni–Co/Al2O3, Co/Ni/Al2O3 and Ni/Co/Al2O3 catalysts were 68.7%, 50.9%, 36.6% at 350 °C, corresponding to the metal species dispersion data 31.5%, 29.1% and 28.0%, respectively. TEM results confirmed these differences corresponded to the metal particles size of the bimetallic catalysts distribution. Higher dispersed catalyst exhibited higher anti-coking properties and stabilities. Under the optimized conditions, the ethanol conversion, H2 and CO2 selectivities were 97.2%, 88.9% and 87.4%, respectively during a 100 h reaction over Ni–Co/Al2O3 catalyst at 550 °C, LHSV of 7.5 h−1 and a C2H5OH/H2O molar ratio of 13. |
Keyword | Steam Reforming Of Ethanol Hydrogen Production Nickel Cobalt High Dispersion Anti-coking |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1016/j.ijhydene.2015.09.063 |
Funding Organization | the 973 Program and 863 Program of Department of Sciences and Technology China (Grant Nos. 2013CB632404;2012AA051501);the National Natural Science Foundation of China (Grant Nos. 21373245;21433007) |
Indexed By | SCI |
If | 3.582 |
Language | 英语 |
Funding Project | 环境催化与清洁能源研究组;环境催化与氢能源研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/19490 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) 精细石油化工中间体国家工程研究中心(ERC) |
Corresponding Author | Lv GX(吕功煊) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Zhao XX,Lu GX,Lv GX. Modulating and controlling active species dispersion over Ni-Co bimetallic catalysts for enhancement of hydrogen production of ethanol steam reforming[J]. International Journal of Hydrogen Energy,2016,41(5):3349-3362. |
APA | Zhao XX,Lu GX,&吕功煊.(2016).Modulating and controlling active species dispersion over Ni-Co bimetallic catalysts for enhancement of hydrogen production of ethanol steam reforming.International Journal of Hydrogen Energy,41(5),3349-3362. |
MLA | Zhao XX,et al."Modulating and controlling active species dispersion over Ni-Co bimetallic catalysts for enhancement of hydrogen production of ethanol steam reforming".International Journal of Hydrogen Energy 41.5(2016):3349-3362. |
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