Synthesis of Mg–K-biochar bimetallic catalyst and its evaluation of glucose isomerization
Abstract Highly efficient isomerization of glucose to fructose is essential for valorizing cellulose fraction of biomass to value-added chemicals. This work provided an innovative method for preparing Mg-biochar and Mg–K-biochar catalysts by impregnating either MgCl2 alone or in combination with di...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Springer
2023-09-01
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| Series: | Biochar |
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| Online Access: | https://doi.org/10.1007/s42773-023-00250-w |
| _version_ | 1827633570654453760 |
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| author | Xiheng Kang Zi You Jian Peng Arthur J. Ragauskas Jingdong Pang Peitao Zhao Yongjun Yin Xueping Song |
| author_facet | Xiheng Kang Zi You Jian Peng Arthur J. Ragauskas Jingdong Pang Peitao Zhao Yongjun Yin Xueping Song |
| author_sort | Xiheng Kang |
| collection | DOAJ |
| description | Abstract Highly efficient isomerization of glucose to fructose is essential for valorizing cellulose fraction of biomass to value-added chemicals. This work provided an innovative method for preparing Mg-biochar and Mg–K-biochar catalysts by impregnating either MgCl2 alone or in combination with different K compounds (Ding et al. in Bioresour Technol 341:125835, 2021, https://doi.org/10.1016/j.biortech.2021.125835 and KHCO3) on cellulose-derived biochar, followed by hydrothermal carbonization and pyrolysis. Single active substance MgO existing in the 10Mg–C could give better catalytic effect on glucose isomerization than the synergy of MgO and KCl crystalline material present in 10Mg–KCl–C. But the catalytic effect of 10Mg–C was decreased when the basic site of MgO was overloaded. Compared to other carbon-based metal catalysts, 10Mg–KHCO3–C with 10 wt% MgCl2 loading had excellent catalytic performance, which gave a higher fructose yield (36.7%) and selectivity (74.54%), and catalyzed excellent glucose conversion (53.99%) at 100 °C in 30 min. Scanning electron microscope–energy dispersive spectrometer and X-Ray diffraction revealed that the distribution of Mg2+ and K+ in 10Mg–KHCO3–C was uniform and the catalytic active substances (MgO, KCl and K2CO3) were more than 10Mg–C (only MgO). The synergy effects of MgO and K2CO3 active sites enhanced the pH of reaction system and induced H2O ionization to form considerable OH− ions, thus easily realizing a deprotonation of glucose and effectively catalyzing the isomerization of glucose. In this study, we developed a highly efficient Mg–K-biochar bimetallic catalyst for glucose isomerization and provided an efficient method for cellulose valorization. Graphical Abstract |
| first_indexed | 2024-03-09T15:01:24Z |
| format | Article |
| id | doaj.art-d16b160b66bd4cb69abb541a159b8cfb |
| institution | Directory Open Access Journal |
| issn | 2524-7867 |
| language | English |
| last_indexed | 2024-03-09T15:01:24Z |
| publishDate | 2023-09-01 |
| publisher | Springer |
| record_format | Article |
| series | Biochar |
| spelling | doaj.art-d16b160b66bd4cb69abb541a159b8cfb2023-11-26T13:55:01ZengSpringerBiochar2524-78672023-09-015111710.1007/s42773-023-00250-wSynthesis of Mg–K-biochar bimetallic catalyst and its evaluation of glucose isomerizationXiheng Kang0Zi You1Jian Peng2Arthur J. Ragauskas3Jingdong Pang4Peitao Zhao5Yongjun Yin6Xueping Song7Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi UniversityGuangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi UniversityGuangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi UniversityDepartment of Chemical and Biomolecular Engineering, University of TennesseeChina CAMC Engineering CO., LTD.School of Electrical and Power Engineering, China University of Mining and TechnologyGuangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi UniversityGuangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, College of Light Industry and Food Engineering, Guangxi UniversityAbstract Highly efficient isomerization of glucose to fructose is essential for valorizing cellulose fraction of biomass to value-added chemicals. This work provided an innovative method for preparing Mg-biochar and Mg–K-biochar catalysts by impregnating either MgCl2 alone or in combination with different K compounds (Ding et al. in Bioresour Technol 341:125835, 2021, https://doi.org/10.1016/j.biortech.2021.125835 and KHCO3) on cellulose-derived biochar, followed by hydrothermal carbonization and pyrolysis. Single active substance MgO existing in the 10Mg–C could give better catalytic effect on glucose isomerization than the synergy of MgO and KCl crystalline material present in 10Mg–KCl–C. But the catalytic effect of 10Mg–C was decreased when the basic site of MgO was overloaded. Compared to other carbon-based metal catalysts, 10Mg–KHCO3–C with 10 wt% MgCl2 loading had excellent catalytic performance, which gave a higher fructose yield (36.7%) and selectivity (74.54%), and catalyzed excellent glucose conversion (53.99%) at 100 °C in 30 min. Scanning electron microscope–energy dispersive spectrometer and X-Ray diffraction revealed that the distribution of Mg2+ and K+ in 10Mg–KHCO3–C was uniform and the catalytic active substances (MgO, KCl and K2CO3) were more than 10Mg–C (only MgO). The synergy effects of MgO and K2CO3 active sites enhanced the pH of reaction system and induced H2O ionization to form considerable OH− ions, thus easily realizing a deprotonation of glucose and effectively catalyzing the isomerization of glucose. In this study, we developed a highly efficient Mg–K-biochar bimetallic catalyst for glucose isomerization and provided an efficient method for cellulose valorization. Graphical Abstracthttps://doi.org/10.1007/s42773-023-00250-wIsomerizationCatalystFructoseBiocharMgO |
| spellingShingle | Xiheng Kang Zi You Jian Peng Arthur J. Ragauskas Jingdong Pang Peitao Zhao Yongjun Yin Xueping Song Synthesis of Mg–K-biochar bimetallic catalyst and its evaluation of glucose isomerization Biochar Isomerization Catalyst Fructose Biochar MgO |
| title | Synthesis of Mg–K-biochar bimetallic catalyst and its evaluation of glucose isomerization |
| title_full | Synthesis of Mg–K-biochar bimetallic catalyst and its evaluation of glucose isomerization |
| title_fullStr | Synthesis of Mg–K-biochar bimetallic catalyst and its evaluation of glucose isomerization |
| title_full_unstemmed | Synthesis of Mg–K-biochar bimetallic catalyst and its evaluation of glucose isomerization |
| title_short | Synthesis of Mg–K-biochar bimetallic catalyst and its evaluation of glucose isomerization |
| title_sort | synthesis of mg k biochar bimetallic catalyst and its evaluation of glucose isomerization |
| topic | Isomerization Catalyst Fructose Biochar MgO |
| url | https://doi.org/10.1007/s42773-023-00250-w |
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