Facial synthesis of ferric molybdate (Fe2(MoO4)3) nanoparticle and its efficiency for biodiesel synthesis via oleic acid esterification

被引:24
作者
AlKahlaway, Amal A. [1 ]
Betiha, Mohamed A. [2 ]
Aman, Delvin [1 ]
Rabie, Abdelrahman M. [3 ]
机构
[1] Egyptian Petr Res Inst EPRI, Refinery Dept, Cairo 11727, Egypt
[2] Egyptian Petr Res Inst EPRI, Prod Dept, Cairo 11727, Egypt
[3] Egyptian Petr Res Inst EPRI, Petrochem Dept, Cairo 11727, Egypt
关键词
Biodiesel; Oleic acid; Transesterification; Ferric molybdate; Kinetics; CATALYTIC CRACKING PROCESS; HETEROGENEOUS CATALYST; PALMITIC ACID; METHANOL; TRANSESTERIFICATION; PERFORMANCE; OIL; OPTIMIZATION; OXIDATION; COMPOSITE;
D O I
10.1016/j.eti.2021.101386
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Catalytic esterification of fatty acids, such as oleic acid, is one of the most important chemical pathways for producing biofuels, and attention is now focused on looking for heterogeneous catalysts to avoid the defects of homogeneous catalysts. With this approach, an efficient Lewis acidic catalyst, Fe-2(MoO4)(3), was successfully prepared with definite crystalline morphology to catalyze the esterification reaction of oleic acid together with ethanol. Under optimum conditions (70 degrees C, 9 alcohol: 1 oleic molar ratio and 3% catalyst amount), the catalytic conversion of oleic acid to biodiesel was 90.5% and 92.5 in case of 5% catalyst, indicating that the combined catalyst has good catalytic activity. The kinetic study of ethanol-oleic acid esterification was conducted, as the kinetic study follows first-order kinetics with the calculated activation energy E-a = 25.21 kJ mol(-1) and pre-exponential factor A(0) = 2449.16 min(-1). Thermodynamic showed a positive value of Delta H, Delta S, and Delta G (endothermic reaction). (C) 2021 Elsevier B.V. All rights reserved.
引用
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页数:12
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