Thermal Properties of the Blends of Methyl and Ethyl Esters Prepared from Babassu and Soybean Oils

Abstract

The ester content of all the blends was higher than 96.5%, which is the minimum value required by the Brazilian National Agency of Petroleum, Natural Gas and Biofuels (Agência Nacional do Petróleo, Gás Natural e Biocombustíveis, ANP). The thermal properties of the babassu, soybean and binary mixtures of esters were investigated by thermogravimetry-differential thermogravimetry (TG/DTG) and differential scanning calorimetry (DSC). The thermal stability of the blended biodiesels decreased as the total contents of the babassu esters increased. From the experiments it was found that babassu methanol biodiesel is stable up to 49.6 °C and the ethanol biodiesel is stable up to 53.7 °C in air. The methyl esters blends were thermally stable up to 83.2 and 56.8 °C, for 90:10 and 50:50 blends (soybean:babassu), respectively. The ethyl ester blends presented values of temperature ranges somewhat higher than the methyl esters, such as 85.2 and 64.5 °C for 90:10 and 50:50 blends, respectively. The esters from babassu oil have satisfactory performance at low temperatures with respect to the point of crystallization, which were below-9.8 °C for ethylic esters and-8.5 °C for methylic esters. A good correlation between the crystallization onset temperature and the increase in the concentration of the babassu oil esters was obtained in the mixtures analyses. In the 50:50 combination (babassu:soybean), the crystallization onset temperature were-6.73 and-9.12 °C for methyl and ethyl esters, respectively.

Thermal and combustion characteristics of honge, jatropha, and honge‐jatropha mixed biodiesels

“…The absence of arachidic and behenic acids in mixed biodiesel reduced combustion duration and interval compared to pure biodiesel. These obtained results are in line with those of Chabane et al 48 and Nicolas et al 49 Figure 7 shows a comparison of DSC combustion curves. Table 2 gives the reaction region temperature, peak combustion temperature, heat flow, and enthalpy.…”

Photocatalyzed hydrodecarboxylation of fatty acids: a prospective method to produce drop-in biofuels

“…Lauric acid (1a) was chosen as a model substrate because it is the major component in some vegetable oils, such as licuri, babassu, and coconut, which are promising feedstocks to produce biofuels. [36][37][38][39] Under these initial conditions, only a trace of n-undecane (2a) was assessed (Table 1, entry 1).…”

Biodiesel Production from Macroalgae Oil from Fucus vesiculosus Using Magnetic Catalyst in Unconventional Reactor Assisted by Magnetic Field

“…Alternatives, such as the use of additives and preparation of blends with oils that have good thermal and oxidative stability, can contribute to the use of this oil [67][68][69]. Recent research shows that optimizing fatty acid profiles by blending biodiesel from different sources and compositions can result in high quality fuels [70,71].…”