کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5203850 | 1381942 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of process severity on the chemical structure of Miscanthus ethanol organosolv lignin
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
Ethanol organosolv lignin extracted from Miscanthus à giganteus with differing levels of severity (1.75 < CS<2.8) were subjected to comprehensive structural characterization by 13C, 31P NMR, FTIR spectroscopy and gel permeation chromatography. The results were compared to those from milled wood lignin from the same feedstock. The results showed that an increase in the severity of the treatment enhanced the dehydration reactions on the side chain and the condensation of lignin, increased the concentration of phenol groups and decreased the molecular mass of lignin fragments. It appeared that for the experimental conditions generally employed the cleavage of α-aryl ether bonds is primarily reaction responsible for lignin depolymerization under the organosolv conditions examined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer Degradation and Stability - Volume 95, Issue 6, June 2010, Pages 997-1003
Journal: Polymer Degradation and Stability - Volume 95, Issue 6, June 2010, Pages 997-1003
نویسندگان
Roland El Hage, Nicolas Brosse, Poulomi Sannigrahi, Arthur Ragauskas,