Characterization of Structural Changes of Lignin in the Process of Cooking of Bagasse with Solid Alkali and Active Oxygen as a Pretreatment for Lignin Conversion

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	Characterization of Structural Changes of Lignin in the Process of Cooking of Bagasse with Solid Alkali and Active Oxygen as a Pretreatment for Lignin Conversion
	Yang, Qiulin ; Shi, Jianbin ; Lin, Lu ; Lin L(林鹿)
刊名	http://dx.doi.org/10.1021/ef300983h
	2012-11
关键词	HYDROXYL RADICALS HYDROGEN-PEROXIDE MECHANICAL PULPS DELIGNIFICATION SPECTROSCOPY DEGRADATION CHEMISTRY WOOD
英文摘要	Ministry of Science and Technology of China [2010CB732201]; Natural Science Foundation of China [U0733001, 21106121]; Basic Research Foundation for Central Universities from the Ministry of Education [2010121077]; Foundation of Scientific Research Universities from the Department of Economy and Commerical of Fujian Province of China [1270-K42004]; A high yield of lignin was generated when solid alkali (MgO) and active oxygen (O-2 and H2O2) were used in bagasse Cooking as a:pretreatment for lignin conversion. In the present work, the lignin present in raw material, pulp, and yellow liquor was characterized by Fourier transform infrared spectroscopy (FTIR) and heteronuclear single-quantum coherence (HSQC) NMR. The results showed that 95.4% of the lignin was obtained from the raw material and present in the yellow liquor. The syringyl (S/S'/S '') units could be changed completely and removed from the raw material, and a novel G' unit with a carbonyl group was generated through an oxidizing reaction. The phenolic structures had a high reactivity during the cooking process, and the beta-O-4' (A/A'/A '') structures had different levels of reactivity. Moreover, the H unit, P structure, and nonphenolic beta-5' and beta-beta' structures were stable throughout the cooking process.
语种	英语
出版者	ENERG FUEL
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/90245]
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. Characterization of Structural Changes of Lignin in the Process of Cooking of Bagasse with Solid Alkali and Active Oxygen as a Pretreatment for Lignin Conversion[J]. http://dx.doi.org/10.1021/ef300983h,2012.
APA	Yang, Qiulin,Shi, Jianbin,Lin, Lu,&林鹿.(2012).Characterization of Structural Changes of Lignin in the Process of Cooking of Bagasse with Solid Alkali and Active Oxygen as a Pretreatment for Lignin Conversion.http://dx.doi.org/10.1021/ef300983h.
MLA	Yang, Qiulin,et al."Characterization of Structural Changes of Lignin in the Process of Cooking of Bagasse with Solid Alkali and Active Oxygen as a Pretreatment for Lignin Conversion".http://dx.doi.org/10.1021/ef300983h (2012).