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首页> 外文期刊>RSC Advances >Influence of a Lewis acid and a Bronsted acid on the conversion of microcrystalline cellulose into 5-hydroxymethylfurfural in a single-phase reaction system of water and 1,2-dimethoxyethane
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Influence of a Lewis acid and a Bronsted acid on the conversion of microcrystalline cellulose into 5-hydroxymethylfurfural in a single-phase reaction system of water and 1,2-dimethoxyethane

机译：路易斯酸和桥面酸对单相反应体系中微晶纤维素转化为5-羟甲基糠醛的影响，1,2-二甲氧基乙烷

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摘要

5-Hydroxymethylfurfural (HMF) is a typical dehydration product of C6 carbohydrates, and it can be converted into a series of chemicals and liquid fuels. In this study, an advanced low-boiling single-phase reaction system consisting of water and 1,2-dimethoxyethane (DMOE) was proposed for the production of HMF from microcrystalline cellulose (MCC). AlCl3 and H3PO4 were selected as the Lewis acidic catalyst and Bronsted acidic catalyst, respectively, and the influence of these two catalysts on the conversion behavior of MCC was studied. The results showed that MCC could be selectively converted into HMF or levulinic acid (LA) by altering the solvent composition. As for the composition of the catalyst, high AlCl3 content favored the generation of HMF, whereas high H3PO4 content could decrease the HMF yield and promote the formation of glucose and fructose. The highest HMF yield of 49.42% was obtained at an AlCl3-H3PO4 ratio of 1 : 0.8. GC-MS analysis suggested that much MCC was transformed into furans and cyclopentenones in the presence of AlCl3, while anhydrosugars tended to be generated with a high H3PO4 proportion in the catalyst. Besides, FTIR analysis of the insoluble humin formed during MCC conversion indicated that AlCl3 could also facilitate the depolymerization of MCC.
机译：5-羟甲基糠（HMF）是C6碳水化合物的典型脱水产物，可转化为一系列化学品和液体燃料。在该研究中，提出了由水和1,2-二甲氧基乙烷（DMOE）组成的先进的低沸点单相反应系统，用于从微晶纤维素（MCC）中产生HMF。选择AlCl3和H3PO4作为Lewis酸性催化剂和刚性酸性催化剂，并研究了这两种催化剂对MCC转化行为的影响。结果表明，通过改变溶剂组合物可以选择性地将MCC选择性地转化为HMF或乙酰丙酸（LA）。至于催化剂的组成，高ALCL3含量赞成HMF的产生，而高H3PO4含量可降低HMF产量并促进葡萄糖和果糖的形成。在AlCl3-H3PO4的比例为1：0.8，获得最高HMF产率49.42％。 GC-MS分析表明，在ALCL3的存在下，将大量的MCC转化为呋喃和环戊烯酮，而Anhydroozars倾向于在催化剂中以高H3PO4比例产生。此外，在MCC转化过程中形成的不溶性湿湿的FTIR分析表明ALCL3还可以促进MCC的解聚。

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  • 来源
    《RSC Advances》 |2018年第13期|共8页
  • 作者

    Zhao Yuan; Wang Shurong; Lin Haizhou; Chen Jingping; Xu Hao;

  • 作者单位

    Zhejiang Univ State Key Lab Clean Energy Utilizat Zheda Rd 38 Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ State Key Lab Clean Energy Utilizat Zheda Rd 38 Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ State Key Lab Clean Energy Utilizat Zheda Rd 38 Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ State Key Lab Clean Energy Utilizat Zheda Rd 38 Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ State Key Lab Clean Energy Utilizat Zheda Rd 38 Hangzhou 310027 Zhejiang Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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