Structural characterization of lignin in the process of cooking of cornstalk with solid alkali and active oxygen

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	Structural characterization of lignin in the process of cooking of cornstalk with solid alkali and active oxygen
	Yang, Qiulin ; Shi, Jianbin ; Lin, Lu ; Zhuang, Junping ; Pang, Chunsheng ; Xie, Tujun ; Liu, Ying ; Lin L(林鹿)
刊名	http://dx.doi.org/10.1021/jf3008663
	2012-05-09
关键词	Delignification Fourier transform infrared spectroscopy Ionization of gases Lignin Quantum theory Wood
英文摘要	A novel, efficient, and environmentally friendly technology is used in cornstalk cooking, active oxygen (O2 and H2O2) cooking with solid alkali (MgO). After the cooking, the milled wood lignin in the raw material and pulp and the water-soluble and insoluble lignin in the yellow liquor were all characterized by attenuated total reflectance Fourier transform infrared spectroscopy and two-dimensional heteronuclear single-quantum coherence NMR. The results showed that the cooking procedure with solid alkali and active oxygen had a high selectivity for delignification, which could remove 85.5% of the lignin from the raw material. The syringyl (S/S鈥?S鈥? units could be dissolved preferentially because of their high reactivity, and a novel guaiacyl unit with a carbonyl group (G鈥? was generated in the cooking process. Moreover, during the cooking, the 尾-O-4鈥?(A/A鈥?A) structures as the main side-chain linkages in all the lignins could be partly broken and the 尾-O-4鈥?(A鈥? with a ring-conjugated structure was readily attacked by oxygen, whereas the H unit and 尾-5鈥?and 尾-尾鈥?structures were found to stay stable without characteristic reaction. 漏 2012 American Chemical Society.
语种	英语
出版者	American Chemical Society
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/90301]
专题	能源院－已发表论文
推荐引用方式 GB/T 7714	Yang, Qiulin,Shi, Jianbin,Lin, Lu,et al. Structural characterization of lignin in the process of cooking of cornstalk with solid alkali and active oxygen[J]. http://dx.doi.org/10.1021/jf3008663,2012.
APA	Yang, Qiulin.,Shi, Jianbin.,Lin, Lu.,Zhuang, Junping.,Pang, Chunsheng.,...&林鹿.(2012).Structural characterization of lignin in the process of cooking of cornstalk with solid alkali and active oxygen.http://dx.doi.org/10.1021/jf3008663.
MLA	Yang, Qiulin,et al."Structural characterization of lignin in the process of cooking of cornstalk with solid alkali and active oxygen".http://dx.doi.org/10.1021/jf3008663 (2012).