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Catalytic hydroprocessing of fatty acid methyl esters to renewable alkane fuels over Ni/HZSM-5 catalyst
Chen, Liangguang1,2; Li, Huiwen1; Fu, Junying1,2; Miao, Changlin1; Lv, Pengmei1; Yuan, Zhenhong1
2016
Source PublicationCATALYSIS TODAY
Volume259Pages:266-276
AbstractA series of Ni/HZSM-5 catalysts with different Ni loading and Si/Al ratios were prepared by incipient wetness impregnation. The physicochemical properties of the catalysts were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N-2-adsorption, temperature-programmed desorption of ammonia (NH3-TPD), and thermogravimetric (TG) analysis. Moreover, their catalytic performance was investigated for the hydroprocessing of long-chain unsaturated fatty acid methyl esters (FAMEs) to renewable alkane fuels using a high-pressure fixed bed reactor system with a facility for online analysis. The different Ni loading and Si/Al ratios of the catalysts, as well as the influence of reaction conditions such as temperature, pressure, H-2/oil molar ratio, and liquid hourly space velocity (LHSV), were studied in detail. The NiO aggregates dispersed on the surface of the support clearly increased the acidity after H-2 reduction, thus significantly affecting the catalytic performance. Temperature and pressure played crucial roles in the conversion of FAMEs and selectivity for gasoline or jet or diesel alkane. Hydroprocessing over 10 wt% Ni/HZSM-5 (Si/Al= 25) at 280 degrees C, a H-2 pressure of 0.8 MPa, an LHSV of 4 h(-1), and with a highly purified H2/oil molar ratio of 15 led to a high selectivity of 88.2% for C-5-C-18 liquid alkanes, which includes 8% of gasoline alkane, 32.5% of jet alkane and 47.7% of diesel alkane, along with appropriate isomerization selectivity of 27.0%, while the conversion of FAME reached 85.1%. To demonstrate the potential of this catalyst for practical applications, its stability in the hydroprocessing of FAMEs was also investigated. The conversion of FAMEs decreased to 30.1% over 10 wt% Ni/HZSM-5 (Si/Al= 25) after operation for 80 h. Catalyst deactivation was predominantly caused by the deposition of carbon which causes blockage of the pores for FAMEs as evidence from TG analysis. (C) 2015 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordHydroprocessing Fames Alkane Fuels Ni/hzsm-5
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.cattod.2015.08.023
WOS Subject ExtendedChemistry ; Engineering
WOS KeywordPALM OIL ; HYDROCARBON FUELS ; VEGETABLE-OILS ; STEARIC-ACID ; DEOXYGENATION ; DIESEL ; HYDRODEOXYGENATION ; NI ; HYDROTREATMENT ; BIODIESEL
Indexed BySCI
Language英语
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS IDWOS:000364863000004
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10910
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Chen, Liangguang,Li, Huiwen,Fu, Junying,et al. Catalytic hydroprocessing of fatty acid methyl esters to renewable alkane fuels over Ni/HZSM-5 catalyst[J]. CATALYSIS TODAY,2016,259:266-276.
APA Chen, Liangguang,Li, Huiwen,Fu, Junying,Miao, Changlin,Lv, Pengmei,&Yuan, Zhenhong.(2016).Catalytic hydroprocessing of fatty acid methyl esters to renewable alkane fuels over Ni/HZSM-5 catalyst.CATALYSIS TODAY,259,266-276.
MLA Chen, Liangguang,et al."Catalytic hydroprocessing of fatty acid methyl esters to renewable alkane fuels over Ni/HZSM-5 catalyst".CATALYSIS TODAY 259(2016):266-276.
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