Melo, Josue Alves; Silva, Larissa Alves de Aquino; Santos, Jandyson Machado; Wisniewski, Alberto Jr published the artcile< Advanced characterization of oxidized derivatives in alternative fatty esters mixture for biodiesel purposes>, Formula: C19H34O2, the main research area is fatty ester mixture oxidized derivative biodiesel thermogravimetric analysis.
Biofuels from unconventional sources contribute to the reduction of environmental impacts without competing with the food market. Samples of fatty esters mixture (FEM) for biodiesel purposes were produced from conventional and alternatives feedstocks sources of triacylglycerols (TAG). In this work, we evaluated the oxidative stability through a complex and advanced characterization at the mol. level of the chem. changes that occurred in these samples for a storage period of 2.5 years. Esters contents were determined by both TG and GC-FID analyses, and values with relative errors from 0.36 to 23.28% were obtained. Low mol. mass compounds derived from the oxidative processes and free fatty acids (FFA) contribute to these differences. TG curves also showed the presence of contaminants with high thermal stability, which were characterized by EASI(+)-MS. TAG and diacylglycerol (DAG) were identified, however, dimers and theirs derived from hydroperoxide degradation were detected as major contaminants, confirmed by the presence of biomarkers ions characteristics of dimers. Our work mapping and presenting the chem. profile of oxidative products of FEM, and in addition, we propose the correlation of relative abundance of ion m/z 349 corresponding to the hydroperoxide [C18:2 + 2O + Na]+ with the peroxide index values.
Fuel published new progress about Acidity. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Formula: C19H34O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics