کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7088648 | 1460051 | 2018 | 27 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparative study on various alcohols solvolysis of organosolv lignin using microwave energy: Physicochemical and morphological properties
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
Solvolysis approach is an efficient pathway to covert solid biomass into different end products since it can provide a mild environment and a single-phase condition. A comparative study on various alcohols-assisted liquefaction of lignin has been carried out using sulfuric acid as catalyst under microwave condition. Methanol and ethanol showed a higher conversion rate compared to other alcohols. Both liquefied products and residues have been investigated using gel permeation chromatography-high-performance liquid chromatography (GPC-HPLC), Fourier transform infrared (FT-IR), Scanning electron microscopy (SEM) and Thermogravimetric (TG) analysis. The results showed that methanol and ethanol as solvents achieved a higher conversion rate, meantime, the molecular weight of liquefied products was dramatically lower than those of other alcohols. The FT-IR indicated that there were obvious differences in the contents of carbonyl, methyl and hydroxyl group in the liquefied products with various alcohols as solvents. The solid residue exhibited a big difference in microstructure morphology after depolymerization, in addition, the resulted solid residue from methanol solvents showed a higher thermal stability and char yield, which can be used as a fire retardant in composite materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering and Processing - Process Intensification - Volume 126, April 2018, Pages 38-44
Journal: Chemical Engineering and Processing - Process Intensification - Volume 126, April 2018, Pages 38-44
نویسندگان
Dengle Duan, Yunpu Wang, Roger Ruan, Maimaitiaili Tayier, Leilei Dai, Yunfeng Zhao, Yue Zhou, Yuhuan Liu,