Effect of Chemical Structure on Pyrolysis Behavior of Alcell Mild Acidolysis Lignin
In this study, two purified mild acidolysis lignins (MAL) extracted from triploid poplar, i.e., Alcell MAL and Alkali MAL, were compared. Some properties, including elemental contents, higher heating value (HHV), functional hydroxyl group compositions, and molecular weights, were tested to character...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
North Carolina State University
2014-12-01
|
| Series: | BioResources |
| Subjects: | |
| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_1_1073_Liu_Pyrolysis_Behavior_Alcell_Lignin |
| _version_ | 1811314993875910656 |
|---|---|
| author | Chao Liu Jia-Jin Liang Shu-Bin Wu Yu-Bin Deng |
| author_facet | Chao Liu Jia-Jin Liang Shu-Bin Wu Yu-Bin Deng |
| author_sort | Chao Liu |
| collection | DOAJ |
| description | In this study, two purified mild acidolysis lignins (MAL) extracted from triploid poplar, i.e., Alcell MAL and Alkali MAL, were compared. Some properties, including elemental contents, higher heating value (HHV), functional hydroxyl group compositions, and molecular weights, were tested to characterize the structure of these two MALs. The releasing laws of gases and the distribution of products were also investigated through the use of thermogravimetric Fourier transform infrared (TG-FTIR) and pyrolysis-gas chromatography combined with mass spectrometry (Py-GC/MS). The results showed that both MALs had pyrolytic advantages, largely because of their unique chemical structures. However, although the species of volatiles from Alkali MAL were similar to those from Alcell MAL, the releasing temperature range for Alcell MAL was relatively narrow and the volatiles from it were concentrated. Among the fast pyrolytic products, phenols were the most abundant. The yield of 2,6-dimethoxy-4-(2-propenyl)phenol, which was the dominant product, was 25.66% for Alcell MAL and 20.77% for Alkali MAL, respectively. Overall, pyrolytic products from Alcell MAL were more enriched. |
| first_indexed | 2024-04-13T11:22:26Z |
| format | Article |
| id | doaj.art-956bf7ee538448a78b3cfb39640af093 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 1930-2126 |
| language | English |
| last_indexed | 2024-04-13T11:22:26Z |
| publishDate | 2014-12-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-956bf7ee538448a78b3cfb39640af0932022-12-22T02:48:47ZengNorth Carolina State UniversityBioResources1930-21261930-21262014-12-011011073108410.15376/biores.10.1.1073-1084Effect of Chemical Structure on Pyrolysis Behavior of Alcell Mild Acidolysis LigninChao Liu0Jia-Jin Liang1Shu-Bin Wu2Yu-Bin Deng3State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, PR China; ChinaState Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, PR China; ChinaState Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, PR China; ChinaState Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, PR China; ChinaIn this study, two purified mild acidolysis lignins (MAL) extracted from triploid poplar, i.e., Alcell MAL and Alkali MAL, were compared. Some properties, including elemental contents, higher heating value (HHV), functional hydroxyl group compositions, and molecular weights, were tested to characterize the structure of these two MALs. The releasing laws of gases and the distribution of products were also investigated through the use of thermogravimetric Fourier transform infrared (TG-FTIR) and pyrolysis-gas chromatography combined with mass spectrometry (Py-GC/MS). The results showed that both MALs had pyrolytic advantages, largely because of their unique chemical structures. However, although the species of volatiles from Alkali MAL were similar to those from Alcell MAL, the releasing temperature range for Alcell MAL was relatively narrow and the volatiles from it were concentrated. Among the fast pyrolytic products, phenols were the most abundant. The yield of 2,6-dimethoxy-4-(2-propenyl)phenol, which was the dominant product, was 25.66% for Alcell MAL and 20.77% for Alkali MAL, respectively. Overall, pyrolytic products from Alcell MAL were more enriched.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_1_1073_Liu_Pyrolysis_Behavior_Alcell_LigninAlcell MALQuantitative 31P-NMRTG-FTIRPy-GC/MS |
| spellingShingle | Chao Liu Jia-Jin Liang Shu-Bin Wu Yu-Bin Deng Effect of Chemical Structure on Pyrolysis Behavior of Alcell Mild Acidolysis Lignin BioResources Alcell MAL Quantitative 31P-NMR TG-FTIR Py-GC/MS |
| title | Effect of Chemical Structure on Pyrolysis Behavior of Alcell Mild Acidolysis Lignin |
| title_full | Effect of Chemical Structure on Pyrolysis Behavior of Alcell Mild Acidolysis Lignin |
| title_fullStr | Effect of Chemical Structure on Pyrolysis Behavior of Alcell Mild Acidolysis Lignin |
| title_full_unstemmed | Effect of Chemical Structure on Pyrolysis Behavior of Alcell Mild Acidolysis Lignin |
| title_short | Effect of Chemical Structure on Pyrolysis Behavior of Alcell Mild Acidolysis Lignin |
| title_sort | effect of chemical structure on pyrolysis behavior of alcell mild acidolysis lignin |
| topic | Alcell MAL Quantitative 31P-NMR TG-FTIR Py-GC/MS |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_1_1073_Liu_Pyrolysis_Behavior_Alcell_Lignin |
| work_keys_str_mv | AT chaoliu effectofchemicalstructureonpyrolysisbehaviorofalcellmildacidolysislignin AT jiajinliang effectofchemicalstructureonpyrolysisbehaviorofalcellmildacidolysislignin AT shubinwu effectofchemicalstructureonpyrolysisbehaviorofalcellmildacidolysislignin AT yubindeng effectofchemicalstructureonpyrolysisbehaviorofalcellmildacidolysislignin |