Advances in New and Renewable Energy >
Thermal Degradation of Bamboo Lignin in Alkaline Ethanol Solvent and Product Analysis
Received date: 2014-04-21
Revised date: 2014-05-26
Online published: 2014-08-30
The thermal degradation of bamboo lignin in NaOH-ethanol solvent system was studied in this work. The effects of NaOH concentration, reaction temperature, reaction time, and dosage of ethanol on the phenolic products were investigated, respectively. The degradation products were analyzed by GC-MS and FT-IR. The optimum conditions were achieved as follows: mbamoo lignin = 5 g, CNaOH (in alcohol aqueous systems) = 20 g/L, Vethanol = 10 mL, reaction temperature is 240oC and reaction time is 2 h. The total relative peak area of phenolic products in the degradation products was 73.88%, and the yield of residue was 30.67%. The main products of bamboo lignin degradation were phenols, such as phenol (17.98%), 2-methoxyphenol (16.49%) and 1,2-benzenediol (10.03%). The results indicated that higher yield of phenolic products was obtained under the optimized conditions compared with the reports. This work showed the potential to degrade bamboo lignin into high value products in NaOH-ethanol solvent system.
WEI Jin-jin , LIU Jian , GAN Li-hui , LONG Min-nan . Thermal Degradation of Bamboo Lignin in Alkaline Ethanol Solvent and Product Analysis[J]. Advances in New and Renewable Energy, 2014 , 2(4) : 254 -259 . DOI: 10.3969/j.issn.2095-560X.2014.04.002
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