Optical properties of carbon materials formed by pyrolysis of novolac-resin/biomass composites

Theodoropoulou, S.; Papadimitriou, D.; Zoumpoulakis, L.; Simitzis, J.

doi:10.1016/j.diamond.2003.11.057

Cited by 13 publications

(8 citation statements)

References 13 publications

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“…Combustion All industries, residential and commercial [64,65] Activated carbon production Food, chemical, petroleum, nuclear, mining, and pharmacological industry [66][67][68][69] Bio-oil production Various industrial fields [70] Furfural production Used as a solvent or as a base for synthesizing its derived solvent [71,72] Used as plastic-filled Plastic and construction [73,74] Abrasive Various industrial fields like cleaning [75] Cosmetic Cosmetic sectors [76] Biosorbent Metallurgy and food [76] Resins electrochemical [77,78] Fractionation Food, cosmetic, pharmaceutical and alcohol [76] https://doi.org/10.1371/journal.pone.0232997.t004…”

Section: Application Sector Referencesmentioning

confidence: 99%

Multivariate analysis for FTIR in understanding treatment of used cooking oil using activated carbon prepared from olive stone

Alshuiael

Al-Ghouti

2020

PLoS ONE

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In this study, activated carbons prepared from the green and black olive stone (green OSAC and black OSAC) were used as adsorbents to investigate their removal efficiencies for oxidation products and polar compounds from used sunflower and corn cooking oils. The degree of oxidation level and polar compounds were evaluated using Fourier transform infrared (FTIR) with the principal component analysis and ultra-performance liquid chromatography. Two FTIR absorption peaks were used for the oil evaluation, namely 3007-3009 cm-1 , which is related to C-H symmetric stretching vibration of the cis double bonds, and 1743 cm-1 , which is related to = CH and ester carbonyl stretching vibration of the functional groups of the triglycerides, C = O. The principal component analysis results showed significant variations in the oxidation level of the sunflower and the corn oils occurred after consecutive heating and French fries frying for 10 days. The oxidation products that are adsorbed on the surface of the OSAC forms π-complexes with the C = C parts of the OSAC system. It can be concluded that the prepared adsorbents can be promising, efficient, economically effective, and environmentally friendly alternative adsorbents for oil treatment applications.

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Section: Application Sector Referencesmentioning

confidence: 99%

Multivariate analysis for FTIR in understanding treatment of used cooking oil using activated carbon prepared from olive stone

Alshuiael

Al-Ghouti

2020

PLoS ONE

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“…3 shows changes in the Raman spectra for the charcoals carbonized at 400°C, 600°C, 800°C and 1000°C. The band at about 1580 cm• 1 is assigned to graphite-band (G-band) originated in the crystalline carbon in the graphite, and the band at about 1350 cm' 1 is assigned to disorder-band (D-band) originated from the defects in the lattice and the carbon with dangling bonds [25,26]. It is found that the intensity ratio ofD-band to G-band (l(D)/l(G)) increases with increasing carbonization temperature.…”

Section: Raman Spectroscopymentioning

confidence: 99%

Effect of Carbonization Temperature on the Physicochemical Structure of Wood Charcoal

Manabe¹,

Ohata²,

Yoshizawa³

et al. 2007

Trans. Mat. Res. Soc. Japan

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Characteristics and microstructure of wood charcoal change dependently upon the carbonization conditions. Hinoki (Cypress, Chamaecy paris obtuse) was carbonized at 400°C, 600°C, 800°C and 1000°C for lh in nitrogen gas flow. Charcoals were analyzed with adsorption isotherms of nitrogen, Fourier-transform infrared (FT-IR) spectroscopy, elemental analysis, electrical resistivity and Raman spectroscopy in order to investigate about the effect of the carbonization temperature on the structure of the charcoal. Increase of the carbonization temperature developed formation of micropores of the charcoal. From result of Raman spectroscopy, it was found that the crystal structure of the charcoal remarkably changed in the temperature range between 600°C and 800°C.

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“…In these studies, the Raman spectral parameters derived from highly ordered carbon materials, mainly the widths, position, and intensities of the G (graphite) and D (defect) bands, 14 were used to investigate the biomass/char structure and its correlation to other characteristics, for example, graphene crystallite size, pore size, and surface area. However, unlike the spectra of highly ordered carbon materials such as graphite that show two clearly distinct and well-resolved peaks of D and G, 14,15 the spectra of biomass chars show much broader bands near G and D than the highly ordered carbon materials 8,[11][12][13] The overlaps between the D and G bands as well as the shoulders at the two sides of the G and D bands for the Raman spectra of biomass chars contain rich information about the structural features of biomass chars. In other words, the Raman spectra of highly disordered carbonaceous materials such as amorphous carbon or chars differ considerably from that of "ideal" polycrystalline graphite: 16,17 the presence of a wide variety of aliphatic structures and O-containing structures in biomass char means that the biomass char will be distinctly different from the well-structured carbon materials.…”

Section: Introductionmentioning

confidence: 99%

“…Raman spectroscopy has been used to study the structural features of chars from the pyrolysis and gasification of biomasses. 8,[11][12][13] . In these studies, the Raman spectral parameters derived from highly ordered carbon materials, mainly the widths, position, and intensities of the G (graphite) and D (defect) bands, 14 were used to investigate the biomass/char structure and its correlation to other characteristics, for example, graphene crystallite size, pore size, and surface area.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Structural Features of Char from the Pyrolysis of Cane Trash Using Fourier Transform−Raman Spectroscopy

et al. 2007

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Structural features of chars from the pyrolysis of cane trash in a fluidized-bed/fixed-bed reactor under both slow and fast heating rate conditions were investigated using Raman spectroscopy. Chars from the pyrolysis of coals were also investigated for comparison. Spectra were curve-fitted using 10 Gaussian bands representing different structural features of the chars. Differences in the total Raman intensity between cane trash chars and the chars of 3 coals of varying rank were great at low pyrolysis temperature (600°C) but decreased as the pyrolysis temperature was increased to 900°C. Both low (10 K min -1 ) and high (>10 3 -10 4 K s -1 ) particle heating rates resulted in increased aromatization and relative aromatic ring size with increasing pyrolysis temperature from 600 to 900°C. However, pyrolysis at slow and fast heating rates gave chars of very different structural features as revealed by Raman spectroscopy.

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Optical properties of carbon materials formed by pyrolysis of novolac-resin/biomass composites

Cited by 13 publications

References 13 publications

Multivariate analysis for FTIR in understanding treatment of used cooking oil using activated carbon prepared from olive stone

Multivariate analysis for FTIR in understanding treatment of used cooking oil using activated carbon prepared from olive stone

Effect of Carbonization Temperature on the Physicochemical Structure of Wood Charcoal

Characterization of the Structural Features of Char from the Pyrolysis of Cane Trash Using Fourier Transform−Raman Spectroscopy

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