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Aromatization of glycerol/alcohol mixtures over zeolite H-ZSM-5

机译：H-ZSM-5沸石上甘油/醇混合物的芳构化

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摘要

The aromatization of glycerol is conducted over zeolite H-ZSM-5 for glycerol valorization. Due to its high viscosity, glycerol is diluted with water, methanol, ethanol, isopropanol or isobutanol. With the aqueous glycerol feed, the total aromatics yield is low and catalyst deactivation is fast. The mixture of glycerol with each alcohol is thus used as a feed, resulting in higher aromatics yields. Furthermore, the carbon fraction of aromatic products depends upon the alcohol mixed with glycerol. In case of the glycerol/meth-anol feed, the formation of trimethylbenzenes along with xylenes is pronounced, since both reactant constituents can be transformed into heavy C_9 aromatics and then dealkylated to xylenes (major) and toluene (minor). In contrast, the use of higher alcohols for glycerol dilution leads to the preferential production of ethylbenzene and ethylmethylbenzenes, though xylenes and trimethylbenzenes are produced, due to alkylation of ethylene formed via dehydration (ethanol) or dehydration/cracking (isopropanol and isobutanol).
机译：在沸石H-ZSM-5上进行甘油的芳构化以进行甘油增价。由于甘油的高粘度，用水，甲醇，乙醇，异丙醇或异丁醇稀释甘油。使用含水甘油进料，芳烃的总产率低并且催化剂失活很快。甘油与每种醇的混合物因此被用作进料，从而导致更高的芳族化合物产率。此外，芳族产物的碳分数取决于与甘油混合的醇。在甘油/甲醇溶液进料的情况下，三甲苯与二甲苯一起形成是明显的，因为两种反应物成分都可以转化为重质C-9芳烃，然后脱烷基为二甲苯（主要）和甲苯（次要）。相反，由于通过脱水（乙醇）或脱水/裂化（异丙醇和异丁醇）形成的乙烯的烷基化，尽管使用了二甲苯和三甲基苯，但是使用高级醇进行甘油稀释会优先生成乙苯和乙基甲基苯。

著录项

  • 来源
    《Fuel》 |2014年第15期|439-447|共9页
  • 作者

    Hyung-Su Jang; Kyungbok Bae; Mi Shin; Sung Min Kim; Chul-Ung Kim; Young-Woong Suh;

  • 作者单位

    Department of Chemical Engineering, Hanyang University, Seoul 133-791, Republic of Korea;

    Department of Chemical Engineering, Hanyang University, Seoul 133-791, Republic of Korea;

    Department of Chemical Engineering, Hanyang University, Seoul 133-791, Republic of Korea;

    Department of Chemical Engineering, Hanyang University, Seoul 133-791, Republic of Korea;

    Green Chemistry Research Division, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea;

    Department of Chemical Engineering, Hanyang University, Seoul 133-791, Republic of Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Aromatization; Glycerol-alcohol mixture; H-ZSM-5; Xylenes; Trimethylbenzenes;

    机译：芳香化;甘油-酒精混合物;H-ZSM-5;二甲苯;三甲基苯;

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