Influence of Additives (Isoamyl Laurate or Isoamyl Nonanoate) in the Solid-Liquid Equilibrium of Fatty Acid Ethyl Esters

被引：4
|
作者：
Branco Almeida Bessa, Larissa Castello [1 ]
Robustillo, Maria Dolores [1 ]
da Silva, Erica Gonna [1 ,2 ]
Tadini, Carmen Cecilia [1 ,2 ]
de Almeida Meirelles, Antonio Jose [3 ]
Pessoa Filho, Pedro de Alcantara [1 ,2 ]
机构：
[1] Univ Sao Paulo, Engn Sch, Dept Chem Engn, BR-05424970 Sao Paulo, SP, Brazil
[2] Univ Sao Paulo, NAPAN Food Res Ctr, FoRC, BR-05508080 Sao Paulo, SP, Brazil
[3] Univ Campinas UNICAMP, Sch Food Engn FEA, Dept Food Engn DEA, BR-13083862 Campinas, SP, Brazil
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2019年 / 64卷 / 05期
基金：
巴西圣保罗研究基金会;
关键词：
TERNARY MIXTURES; BINARY-MIXTURES; LOW-TEMPERATURE; PHASE-DIAGRAMS; CLOUD POINT; REPRESENTATIVE COMPOUNDS; METHYL-ESTERS; BIODIESEL; PALMITATE; SYSTEMS;
D O I：
10.1021/acs.jced.8b01019
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Solid liquid equilibrium data of binary mixtures of fatty acid ethyl esters present in biodiesel, namely, ethyl laurate, ethyl palmitate, ethyl myristate, ethyl stearate, and ethyl oleate, and fatty esters of branched-chain alcohols used as additives (isoamyl laurate and isoamyl nonanoate) were obtained through differential scanning calorimetry. Most of these systems presented eutectic behavior, except for the system system ethyl laurate + isoamyl laurate, which presented peritectic transition. Equilibrium data were thermodynamically modeled either using two different liquid-phase activity coefficient models or considering that the liquid phase is an ideal mixture. Best correlations were observed for the Flory-Huggins equation, but good agreement between calculated and experimental data was also obtained when using both the ideal and UNIFAC-Dortmund models.
引用
收藏
页码：2062 / 2074
页数：13
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