2019
DOI: 10.5658/wood.2019.47.4.486
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Pyrolysis Properties of Lignins Extracted from Different Biorefinery Processes

Abstract: The non-isothermal and isothermal pyrolysis properties of H lignin and P lignin extracted from different biorefinery processes (such as supercritical water hydrolysis and fast pyrolysis) were studied using thermogravimetry analysis (TGA) and pyrolyzer-gas chromatography/mass spectrometry (Py-GC/MS). The lignins were characterized by ultimate/proximate analysis, FT-IR and GPC. Based on the thermogravimetry (TG) and derivative thermogravimetry (DTG) curves, the thermal decomposition stages were obtained and the … Show more

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Cited by 9 publications
(2 citation statements)
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“…The peak at 1507 cm −1 is associated with aromatic skeletal vibration (C=C) [ 36 ], which proves the presence of a guaiacyl unit of lignin that has been stable against heat treatment up to 160 °C. The peak at 1728 cm −1 indicates the existence of C=O valence vibration from xylan in the hemicellulose [ 37 , 38 , 39 ], which is decreased by heat treatment at 160 °C for 3 h. The peak at 1155 cm −1 represents the C–O–C asymmetric valence vibration of cellulose and hemicellulose, which diminished owing to heat treatment at 160 °C for 3 h. The phenomenon of decreased polysaccharides, notably hemicellulose, is corroborated by a peak at 1030 cm −1 , which shows the presence of C–O stretching of primary alcohol [ 36 ], which has diminished owing to heat treatment. Based on the results obtained, a temperature of 160 °C for 3 h more effectively reduced functional groups that can interfere with the BOSB manufacturing process.…”
Section: Resultsmentioning
confidence: 99%
“…The peak at 1507 cm −1 is associated with aromatic skeletal vibration (C=C) [ 36 ], which proves the presence of a guaiacyl unit of lignin that has been stable against heat treatment up to 160 °C. The peak at 1728 cm −1 indicates the existence of C=O valence vibration from xylan in the hemicellulose [ 37 , 38 , 39 ], which is decreased by heat treatment at 160 °C for 3 h. The peak at 1155 cm −1 represents the C–O–C asymmetric valence vibration of cellulose and hemicellulose, which diminished owing to heat treatment at 160 °C for 3 h. The phenomenon of decreased polysaccharides, notably hemicellulose, is corroborated by a peak at 1030 cm −1 , which shows the presence of C–O stretching of primary alcohol [ 36 ], which has diminished owing to heat treatment. Based on the results obtained, a temperature of 160 °C for 3 h more effectively reduced functional groups that can interfere with the BOSB manufacturing process.…”
Section: Resultsmentioning
confidence: 99%
“…Lignin is the most abundant aromatic biomass comprising 15%-30% of the total aromatic biomass, whereas cellulose is the primary material in woody biomass, accounting for 30%-50% of the total (Kim et al, 2019;Upton and Kasko, 2015;Yang et al, 2017). As the most abundant aromatic compound in the world, lignin has excellent potential as a raw material in various industrial applications such as the manufacture of engineering plastics, foam materials, membranes, nanofibers, hydrogels, adhesives, and other new materials (Bang et al, 2022;Fatriasari et al, 2020;Hwang and Choi, 2018;Hwang et al, 2021;Lee et al, 2019Lee et al, , 2021 Effects of Precipitation pH of Black Liquor on Characteristics of Precipitated and Acetone-Fractionated Kraft Lignin Min and Um, 2017;Yang et al, 2019). Among various technical lignins, kraft lignin (KL) extracted from black liquor in the kraft pulping process is the most abundant industrial lignin (Gadhave et al, 2019;Li et al, 2016;Tejado et al, 2007).…”
Section: Introductionmentioning
confidence: 99%