Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Association of chemical structure and thermal degradation of lignins from crop straw and softwood | |
Huang, Yanqin1,2 ; Liu, Huacai1,2; Yuan, Hongyou1,2; Zhuang, Xiuzheng1,2,3; Yuan, Song1,2,3; Yin, Xiuli1,2; Wu, Chuangzhi1,2
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| 2018-09-01 | |
| Source Publication | JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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| ISSN | 0165-2370 |
| Volume | 134Pages:25-34 |
| Corresponding Author | Yin, Xiuli(xlyin@ms.giec.ac.cn) |
| Abstract | The structural characteristics of crop straw (wheat straw, WS) lignin and softwood (pine wood, PW) lignin prepared using the enzymatic/mild acid hydrolysis method (EMAL) were deeply elucidated by FTIR (Fourier transform infrared), C-13-H-1 2D-NMR (nuclear magnetic resonance), and quantitative P-31-NMR combined with DFRC (derivatization followed by reductive cleavage). Then, the association of chemical structure and thermal degradation was evaluated by means of TG-FTIR-MS (thermo-gravimetric-FTIR-mass spectrometry) and Py-GC/MS (pyrolysis-gas chromatography/mass spectrometry). The results showed that the functional groups and aromatic unit compositions of WS-EMAL were distinct from those of PW-EMAL, identifying the former as a HGSlignin and the latter as a typical G-lignin. Both WS EMAL and PW-EMAL were mainly cross-linked by beta-O-4 linkages but had different contents. The amount of uncondensed beta-O-4 linkages in WS-EMAL was 1168 mu mol/g, which was lower than that in PW-EMAL (1297 mu mol/g). These distinctions in structure caused a large difference in thermal stability, evolution behavior of typical volatiles and selectivities of G-, S-, H-, C-phenols between the two lignins. The mechanistic influence of structural features on pyrolysis behavior was intensively discussed, and a correlation between the two lignins was obtained. |
| Keyword | Crop straw and softwood lignins Structure elucidation Thermal degradation |
| DOI | 10.1016/j.jaap.2018.04.008 |
| WOS Keyword | P-31 NMR ANALYSIS ; RICH BIO-OIL ; PYROLYSIS BEHAVIORS ; PY-GC/MS ; LIGNOCELLULOSIC BIOMASS ; TG-FTIR ; MODEL ; WOOD ; CONVERSION ; MECHANISM |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51661145022] ; National Natural Science Foundation of China[51776207] ; Natural Science Foundation of Guangdong Province[2017B030308002] |
| WOS Research Area | Chemistry ; Spectroscopy |
| Funding Organization | National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province |
| WOS Subject | Chemistry, Analytical ; Spectroscopy |
| WOS ID | WOS:000445306600003 |
| Publisher | ELSEVIER SCIENCE BV |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/23998 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Yin, Xiuli |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 3.Univ Chinas Acad Sci, Beijing 10049, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Huang, Yanqin,Liu, Huacai,Yuan, Hongyou,et al. Association of chemical structure and thermal degradation of lignins from crop straw and softwood[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2018,134:25-34. |
| APA | Huang, Yanqin.,Liu, Huacai.,Yuan, Hongyou.,Zhuang, Xiuzheng.,Yuan, Song.,...&Wu, Chuangzhi.(2018).Association of chemical structure and thermal degradation of lignins from crop straw and softwood.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,134,25-34. |
| MLA | Huang, Yanqin,et al."Association of chemical structure and thermal degradation of lignins from crop straw and softwood".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 134(2018):25-34. |
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