Thermogravimetric analysis as a rapid and simple method to determine the degradation degree of soy biodiesel

Vega-Lizama, T.; Díaz‐Ballote, L.; Hernández-Mézquita, E.; May-Crespo, F.; Castro-Borges, P.; Castillo-Atoche, Andrea; González-García, G.; Maldonado, L.

doi:10.1016/j.fuel.2015.04.047

Cited by 44 publications

(23 citation statements)

References 22 publications

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“…Jain et al [28] conducted research to measure the thermal degradation of various antioxidant treated biodiesel blends to find the best blends that improved using higher alcohols. Vega-Lizama et al [29] measured the amount of thermal degradation of soy biodiesel using the residual mass obtained from the decomposition curve and reported that TGA is an optimistic way to measure the oxidation degree of biodiesel without knowing the biodiesel oxidation process. However, higher alcohol treated biodiesel-diesel blends are considered as good thermal and cold flow properties.…”

Section: Introductionmentioning

confidence: 99%

Influences of ignition improver additive on ternary (diesel-biodiesel-higher alcohol) blends thermal stability and diesel engine performance

Imdadul

Masjuki

Kalam

et al. 2016

Energy Conversion and Management

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Section: Introductionmentioning

confidence: 99%

Influences of ignition improver additive on ternary (diesel-biodiesel-higher alcohol) blends thermal stability and diesel engine performance

Imdadul

Masjuki

Kalam

et al. 2016

Energy Conversion and Management

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“…All samples have a thermal decomposition with formation of volatile reaction products; the step presented around 100°C is related with the desiccation (residual pore water), dehydration or other substances desiccation as solvent residues or monomers; and the transition before 300°C could be associated with oxidation products decomposition …”

Section: Resultsmentioning

confidence: 99%

Thermal Study of Gels Obtained From Resol Type Phenolic Resins Modified With Lignin

Úsuga

Gil

Castro

et al. 2016

Macromolecular Symposia

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Summary Gels were obtained from resol type phenolic resins, with resorcinol, formaldehyde and lignin as precursors. Thermal response was evaluated by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and curing kinetics were determined from the SDTA curves using Flynn–Wall–Ozawa and Friedman iso‐conversional models. Additionally, it was used Fourier transform infrared spectroscopy (FTIR) to evaluate the progress of the curing reaction. These analyzes were performed for two gels, one of them prepared with lignin (lignin resin), and a reference (resorcinol resin). Lignin resins tend to be more thermally stable than resorcinol resins. Average values found for activation energy of the curing processes are 55.07 kJ mol−1 and 60.60 kJ mol−1 for resorcinol resin and lignin resins respectively using Flynn–Wall–Ozawa method; values of 51.94 kJ mol−1 and 53.14 kJ mol−1 were obtained using Friedman method. It was possible to conclude that the lignin affects positively the thermal stability of the resin; the curing reaction takes place in the first six hours and the Flynn–Wall–Ozawa model fits better.

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“…The biodiesel was prepared in accordance with our procedure, as previously described. 11 In summary 100 g of soybean oil was mixed with 22 g of MeOH containing 1 g of KOH. The reaction mixture was kept at 600 rpm and room temperature (25 °C) for 60 min.…”

Section: Methodsmentioning

confidence: 99%

Measuring the Light Crude Oil (Lco) Content in Standard Biodiesel/Lco Blends by Thermal Analysis

et al. 2018

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The goal of the present study was to determine the potential use of thermal analysis for the measurement of the light crude oil (LCO) content of standard biodiesel mixtures. Standard samples of biodiesel/LCO blends were prepared with different ratios of biodiesel; LCO: 1:0 (biodiesel only), 1:3, 1:1, 3:1, 0:1 (LCO only). Thermogravimetry (TG) and differential scanning calorimetry were used to determine the usefulness of thermal analysis for quantification of the LCO in the mixtures. Proton nuclear magnetic resonance ( 1 H NMR) spectroscopy was also used to confirm the composition of the samples. It was found that thermogravimetric curves were not appropriate for the LCO measurements. However, the DSC signal of wax crystallization exhibited a good linear (R 2 = 0.99) correlation with the LCO content in the blend. Furthermore, it was shown that aliphatic protons (-CH 2 -) n in biodiesel and light crude oil can also be used to determine LCO in biodiesel/LCO blends.

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Thermogravimetric analysis as a rapid and simple method to determine the degradation degree of soy biodiesel

Cited by 44 publications

References 22 publications

Influences of ignition improver additive on ternary (diesel-biodiesel-higher alcohol) blends thermal stability and diesel engine performance

Influences of ignition improver additive on ternary (diesel-biodiesel-higher alcohol) blends thermal stability and diesel engine performance

Thermal Study of Gels Obtained From Resol Type Phenolic Resins Modified With Lignin

Measuring the Light Crude Oil (Lco) Content in Standard Biodiesel/Lco Blends by Thermal Analysis

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