Email this article Effect of Ionic Liquid 1-Butyl-3-Methyl-Imidazolium Dihydrogen Phosphate Pretreatment on Pyrolysis of Lignin
- Authors: Yu W.1, Lei Z.1,2, Shui H.1, Ren S.1, Wang Z.1, Kang S.1, Pan C.1
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Affiliations:
- School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization
- Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology
- Issue: Vol 60, No 11 (2017)
- Pages: 439-444
- Section: Chemistry
- URL: https://ogarev-online.ru/1068-364X/article/view/226391
- DOI: https://doi.org/10.3103/S1068364X17110072
- ID: 226391
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Abstract
In order to improve the yield of liquid fraction and phenolics content during lignin pyrolysis, an effective method of lignin pyrolysis through the pretreatment of lignin by an acidic ionic liquid 1-butyl-3- methyl-imidazolium dihydrogen phosphate ([Bmim]H2PO4) at low temperature is investigated in this study. It is found that [Bmim]H2PO4 pretreatment increases the total yield of liquid products of lignin pyrolysis compared to that of original lignin. The [Bmim]H2PO4 pretreatment temperature significantly impacts the behaviors of the lignin pyrolysis. In the temperature range of 50 to 150°C, the yield of the overall liquid product obtained by pyrolysis of the sample pretreated at 50°C is the highest. After pretreatment, the [Bmim]H2PO4 can be efficiently recovered, but the structure and stability of the [Bmim]H2PO4 have been changed. The FTIR analysis shows that the ionic liquid [Bmim]H2PO4 pretreatment can break hydrogen bonds, ether linkages and ester bonds in lignin.
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About the authors
Wenhao Yu
School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization
Email: zplei@ahut.edu.cn
China, Ma’anshan, Anhui Province, 243002
Zhiping Lei
School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization; Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology
Author for correspondence.
Email: zplei@ahut.edu.cn
China, Ma’anshan, Anhui Province, 243002; Taiyuan
Hengfu Shui
School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization
Email: zplei@ahut.edu.cn
China, Ma’anshan, Anhui Province, 243002
Shibiao Ren
School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization
Email: zplei@ahut.edu.cn
China, Ma’anshan, Anhui Province, 243002
Zhicai Wang
School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization
Email: zplei@ahut.edu.cn
China, Ma’anshan, Anhui Province, 243002
Shigang Kang
School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization
Email: zplei@ahut.edu.cn
China, Ma’anshan, Anhui Province, 243002
Chunxiu Pan
School of Chemistry and Chemical Engineering, Anhui Key Laboratory of Coal Clean Conversion and Utilization
Email: zplei@ahut.edu.cn
China, Ma’anshan, Anhui Province, 243002
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