| 麦秸秆液化生物油的分离与分析 |
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| 引用本文： | 杨华美,堵锡华,李成义,陈艳,李靖.麦秸秆液化生物油的分离与分析[J].信阳师范学院学报(自然科学版),2019(2):287-292. |
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| 作者姓名： | 杨华美 堵锡华 李成义 陈艳 李靖 |
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| 作者单位： | 徐州工程学院化学化工学院;中国天辰工程有限公司 |
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| 摘 要： | 为提高麦秆资源化利用的经济价值,以麦秆在280℃超临界乙醇解液化产物(生物油)为原料,首先利用苯萃取,所得苯可溶物依次进行乙醚萃取、酸碱中和-乙醚萃取将生物油进行分离,萃余物利用硅胶柱层析进行富集分离,以获取高附加值化学品.结果表明,利用乙醚萃取、酸碱中和-乙醚萃取能够有效地分离提取生物油中的羟基酮和酚;而萃余物的成分较为复杂,经进一步的柱层析分离,能够有效富集分离C_8～C_(30)的饱和脂肪烃、萘及烃基萘、烷基环戊烯酮等族组分,此外,经柱层析富集,检测到多种含氮化合物,为进一步明确生物油组成及其提质应用提供参考信息.
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| 关 键 词： | 麦秆 液化 生物油 萃取 柱层析 富集 |
Separation and Composition Analysis of Bio-oil from Liquefaction of Wheat Stalk |
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| Institution: | ,School of Chemistry and Chemical Engineering,Xuzhou University of Technology,China Tianchen Engineering Co.Ltd. |
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| Abstract: | Aimed to improve the economic efficiency of wheat stalk and get high value-added chemicals,bio-oil,prepared from the liquefaction of wheat stalk in supercritical ethanol at 280℃,was first extracted by benzene.The benzene-soluble fraction was extracted by ether before and after acid-base neutralization.The residues were future separated by column chromatography.All the separated fractions were analyzed by GC/MS.Results showed that hydroxy-ketones and phenolic compounds were effectively separated by the extraction of ether,and the residues composition was much more complex.Through the separation of column chromatography,components such as C_8～C_(30)alkanes,naphthalene and its derivatives,and alkyl cyclopentenones were enriched and separated.What’s more,nitrogen compounds were also enriched and detected by GC/MS,which was helpful to full the composition information of bio-oil. |
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| Keywords: | wheat stalk liquefaction bio-oil extraction column chromatography enrichment |
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