Line shape analysis of the Raman spectra from pure and mixed biofuels esters compounds

Miranda, Alisson Marques de; Castilho-Almeida, Eduardo W.; Ferreira, Erlon H. Martins; Moreira, Gabriela F.; Achete, Carlos A.; Armond, Raigna A. S. Z.; Santos, Hélio F. Dos; Jório, Ado

doi:10.1016/j.fuel.2013.06.038

Cited by 65 publications

(41 citation statements)

References 28 publications

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“…Por tanto el método SERS se convierta en una herramienta nanofotónica para el análisis de los biocombustibles. El tipo de sustratos empleados en este análisis dan espectros Raman claros, con una relación señal/ruido favorable para el análisis de Biodiésel en diésel, contrario a las mediciones Raman reportadas por otros autores [30,22,23,30,32].…”

Section: Resultados Señales De Fotoluminiscencia Fluorescencia Fosfunclassified

“…Entre las técnicas espectroscópicas ópticas empleadas comúnmente para analizar biocombustibles se encuentran la absorción UV-vis y de infrarrojo [24][25][26][27]. Particularmente, una técnica óptica no invasiva que ha venido ganando una posición importante en el análisis de sustancias líquidas o sólidas es la espectroscopia Raman [16][17][18][19][20][21][22][23][28][29][30]. La que puede suministrar información química detallada sobre muestras de biocombustibles, y con esto la cantidad porcentual de la mezcla con diésel.…”

Section: Introductionunclassified

“…Además, el espectro Raman revela una gran cantidad de características i.e. huella digital molecular, bandas espectrales más detalladas, mayor resolución energética e identidad química o alteración del biocombustible [7,[22][23]30]. En especial en este trabajo se reporta un procedimiento novedoso para obtener espectros Raman de señal magnificada (SERS: Surface Enhanced Raman Spectroscopy) de muestras de biodiésel en diésel.…”

Section: Introductionunclassified

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Nanofotónica en el análisis de biocombustibles

Paez-Sierra

Cardona

2018

Ingeniare. Rev. chil. ing.

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RESUMENActualmente uno de los retos energéticos es la búsqueda de alternativas para suplir anticipadamente el futuro agotamiento del petróleo a nivel mundial, y que además sean favorables con el medio ambiente. En especial los biocombustibles se han convertido en una de las propuestas más favorables para cubrir las actuales demandas del petróleo. Los biocombustibles son producidos de organismos vivos o de subproductos metabólicos (orgánicos o de desechos alimentarios). En este artículo se presenta una aplicación particular de la nanofotónica en el marco de la interacción de la luz con la materia denominada espectroscopia Raman de señal magnificada. Como muestra de control se considera el biodiésel y su mezcla con diésel, la razón se debe a la necesidad de establecer métodos de análisis durante el proceso de producción que podrían servir como cuantificador del grado de integridad al ser mezclado con diesel.Palabras clave: Biocombustibles, biodiésel, SERS, espectroscopia Raman, nanofotónica, sensórica. ABSTRACT Currently one of the energetic challenges is to look for environmentally friendly alternatives that would fulfill in advance the future shortage of oil in the world. Especially, biofuels have turned into one of the most favorable proposals to overcome current demands of the oil. Biofuels are produced from living organisms or from metabolic by-products (organic or food waste products). In this paper a particular application of nanophotonics in the frame of the interaction between light and matter through SurfaceEnhanced Raman spectroscopy (SERS) is addressed. As a test prove aBiodiésel sample is considered, the reason relies on the necessity to establish analysis procedures either to be performed during the production or as a quantifying tool to probe integrity during the blending process with diesel.

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Section: Resultados Señales De Fotoluminiscencia Fluorescencia Fosfunclassified

Section: Introductionunclassified

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Nanofotónica en el análisis de biocombustibles

Paez-Sierra

Cardona

2018

Ingeniare. Rev. chil. ing.

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“…We observed that, in all spectra, there is a prominent band at 2920 cm −1 assigned to the symmetric stretching of CH 3 ; 2850 and 2950 cm −1 are associated with the symmetric and asymmetric stretching of CH 2 , respectively; 28 1750−1730 cm −1 corresponds to the vibrations of CO; 11 1600 cm −1 is assigned to CC; and 1450 and 1380 cm −1 is associated with the asymmetric and symmetric deformation of CH 3 , respectively. 28 Finally, the vibration observed next of 1100−1350 cm −1 is probably the stretching of CO−(OR) and in the region of 700−900 cm −1 assigned to the stretching vibration of CH. 11 Therefore, the spectra MIR ( Figure 1) presents similarities and, consequently, not possible through simple visual inspection, differentiation of unadulterated and adulterated samples, making it necessary to utilize chemometric methods.…”

Section: Methodsmentioning

confidence: 95%

Fast Detection of Adulterants/Contaminants in Biodiesel/Diesel Blend (B5) Employing Mid-Infrared Spectroscopy and PLS-DA

et al. 2014

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This work presents the potentiality of partial least squares discriminant analysis (PLS-DA) associated with midinfrared spectroscopy to detect gasoline, residual automotive lubricant oil, soybean oil, and used frying oil, in biodiesel/diesel blend (B5). The samples of biodiesel/diesel blend unadulterated and adulterated were classified correctly in their respective groups; that is, the PLS-DA models showed 100% correct classification in samples of the test set with high levels of sensitivity and specificity to discriminate between adulterated and unadulterated samples. These results indicate that the methodology proposed is a viable alternative to detect these types of adulterants/contaminants in biodiesel/diesel blend (B5), commonly used in Brazil.

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“…A filtration process was made to crude glycerol for acquiring the Raman spectrum because a high fluorescence was observed. According to Miranda et al [36] the signals found from 2800 to 3000 cm À1 were characteristic of the typical spectrum of biodiesel. Moreover, the 1000-1500 cm À1 spectral region contains two broad envelopes that encompass modes due to (CCO), (CH 2 ), and (COH) vibrations of the primary AOH groups.…”

Section: Physicochemical Characterization Of Cu@pd/c and Cu@pt C Elecmentioning

confidence: 93%

Electrooxidation of crude glycerol as waste from biodiesel in a nanofluidic fuel cell using Cu@Pd/C and Cu@Pt/C

Maya-Cornejo

Guerra‒Balcázar

Arjona

et al. 2016

Fuel

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Line shape analysis of the Raman spectra from pure and mixed biofuels esters compounds

Cited by 65 publications

References 28 publications

Nanofotónica en el análisis de biocombustibles

Nanofotónica en el análisis de biocombustibles

Fast Detection of Adulterants/Contaminants in Biodiesel/Diesel Blend (B5) Employing Mid-Infrared Spectroscopy and PLS-DA

Electrooxidation of crude glycerol as waste from biodiesel in a nanofluidic fuel cell using Cu@Pd/C and Cu@Pt/C

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