共 3 条
Comparison of biodiesel production using a novel porous Zn/Al/Co complex oxide prepared from different methods: Physicochemical properties, reaction kinetic and thermodynamic studies
被引:44
|作者:
Sun, Chihe
[1
]
Hu, Yun
[1
]
Sun, Fubao
[1
]
Sun, Yahui
[2
]
Song, Guojie
[1
]
Chang, Haixing
[3
]
Lunprom, Siriporn
[4
,5
]
机构:
[1] Jiangnan Univ, Sch Biotechnol, Key Lab Ind Biotechnol MOE, Wuxi 214122, Jiangsu, Peoples R China
[2] Nanjing Normal Univ, Sch Energy & Mech Engn, Engn Lab Energy Syst Proc Convers & Emiss Control, Nanjing 210023, Peoples R China
[3] Chongqing Univ Technol, Sch Chem & Chem Engn, Chongqing 400054, Peoples R China
[4] Khon Kaen Univ, Fac Technol, Dept Biotechnol, Khon Kaen 40002, Thailand
[5] Khon Kaen Univ, Res Grp Dev Microbial Hydrogen Prod Proc Biomass, Khon Kaen 40002, Thailand
来源:
基金:
中国博士后科学基金;
中国国家自然科学基金;
关键词:
Biodiesel;
Transesterification;
Heterogeneous catalysis;
Zinc aluminate;
Template method;
WASTE COOKING OIL;
HETEROGENEOUS CATALYST;
PALM OIL;
TRANSESTERIFICATION PROCESS;
VEGETABLE-OIL;
OPTIMIZATION;
SPINEL;
SUNFLOWER;
TEMPERATURE;
REMOVAL;
D O I:
10.1016/j.renene.2021.09.122
中图分类号:
X [环境科学、安全科学];
学科分类号:
08 ;
0830 ;
摘要:
The use of heterogeneous catalysts in the transesterification reaction is an eco-friendly and cost-effective approach for biodiesel production as compared to the homogeneous catalyst-based processes. In this study, a heterogeneous cobalt doping Zn/Al complex oxide was prepared by a simple birch-templating method, and successfully applied to the transesterification of jatropha oil with methanol. The catalyst had strong diffraction peaks of ZnAl2O4 spinel crystal with substitutional doping of amorphous cobalt atom. It had a tendency to achieve a high base strength whilst increasing the specific surface area in the presence of cobalt. By contrast to the impregnation and coprecipitation methods, the crystalline particles from templating method were uniformly distributed on the catalyst surface, thus forming a well-defined tiled network with large amounts of grain-free pores. The exposure of available activity sites resulted in a biodiesel yield of 91.4%. After used several times and recycled, the regenerated catalyst also exhibited good catalytic potency without obvious deactivation. The transesterification kinetics satisfied the Pseudo first order model that controlled by the reaction temperature and catalyst dosage. The thermodynamic parameters of Delta H of 16.7 kJ/mol, Delta S of -284.6 J/mol/K, and Delta G of 140.0 kJ/mol suggested an endothermic, endergonic, and non-spontaneous nature of the reaction. (c) 2021 Elsevier Ltd. All rights reserved.
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页码:1419 / 1430
页数:12
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