首页> 外文期刊>Korean Journal of Chemical Engineering >Inulin conversion to hydroxymethylfurfural by Brønsted acid in ionic liquid and its physicochemical characterization
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Inulin conversion to hydroxymethylfurfural by Brønsted acid in ionic liquid and its physicochemical characterization

机译:布朗斯台德酸在离子液体中将菊粉转化为羟甲基糠醛及其理化特性

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摘要

A simple conversion process of inulin polymer into hydroxymethylfurfural (HMF) was developed using Brønsted acid catalyst (HCl) in the presence of an ionic liquid, 1-octyl-3-methylimidazolium chloride ([OMIM]Cl). In addition, the physicochemical properties of inulin particle and its depolymerixation products were scrutinized. FESEM and XRD diffraction frequency showed that inulin particles are clustered in a granulated formation and their molecular structure is highly amorphous. FT-IR analysis identified five characteristic frequency regions: Region 1; 700–900, Region 2; 900–1,200, Region 3; 1,200–1,350; Region 4; 1,350–1,500, and Region 5; 1,530–1,800 cm−1. HPLC analysis confirmed that the major composition of inulin consists of fructose and glucose. The synthesis of HMF was significantly affected by the Brønsted catalyst and its concentration. Its highest yield (63.1±5.1 dwt%) was achieved at 0.3M HCl in the presence of [OMIM]Cl. No presence of the Brønsted catalyst exhibited negligible HMF yield (2.3±1.1 dwt%). Our results demonstrate that the Brønsted catalyst plays a pivotal role in the catalytic process of HMF synthesis from inulin polymer.
机译:在离子液体1-辛基-3-甲基咪唑鎓氯化物([OMIM] Cl)存在下,使用布朗斯台德酸催化剂(HCl)开发了菊粉聚合物向羟甲基糠醛(HMF)的简单转化方法。另外,仔细研究了菊粉颗粒及其解聚产物的理化性质。 FESEM和XRD衍射频率表明,菊粉颗粒聚集成颗粒状,其分子结构高度无定形。 FT-IR分析确定了五个特征频率区域:区域1;区域1;区域1。 700-900,区域2; 900-1,200,第3区; 1,200–1,350;区域4; 1,350–1,500和第5区; 1,530–1,800 cm-1。 HPLC分析证实菊粉的主要成分由果糖和葡萄糖组成。 HMF的合成受到布朗斯台德催化剂及其浓度的显着影响。在[OMIM] Cl的存在下,在0.3M HCl下达到最高收率(63.1±5.1 dwt%)。不存在布朗斯台德催化剂的HMF产率可忽略不计(2.3±1.1dwt%)。我们的结果表明,布朗斯台德催化剂在菊粉聚合物合成HMF的催化过程中起着关键作用。

著录项

  • 来源
    《Korean Journal of Chemical Engineering》 |2013年第7期|1429-1435|共7页
  • 作者单位

    Department of Biotechnology Dong-A University">(178);

    High-Technology Components Materials Research Center Korea Basic Science Institute">(278);

    Department of Biotechnology Dong-A University">(178);

    Department of Biotechnology Dong-A University">(178);

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-18 00:01:26

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