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Etherification of glycerol for improved production of oxygenates

机译：甘油甘油化以提高含氧化合物的产量

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摘要

Various resin and zeolite based catalysts are prepared, characterized and evaluated for their catalytic performance towards the etherification of glycerol with tertiary butyl alcohol. Resin based catalysts exhibited higher glycerol conversions and ether selectivities at relatively lower reaction temperature (75 ℃) than the zeolite based catalysts (90° to 110 ℃) but the zeolite based catalysts performed better in terms of stability in activity to produce high amounts of di-tertiary butyl (DTBG) and tri-tertiary butyl ether (TTBG) of glycerol (oxygenate stock). Though acidity is important for the etherification reaction, the zeolites exhibiting better porosity rather than acidity could yield higher oxygenate. The presence of inter-crystalline meso-pores in N-BEA further improved the oxygenate production and time-on-stream activity of the catalyst. At optimized catalyst parameters and reaction conditions, Nano-beta (N-BEA) zeolite catalyst exhibited above 95% conversion of glycerol with more than 45% and 54% selectivities to DTBG and TTBG, which are potential blending stocks for diesel.
机译：制备，表征和评估各种基于树脂和沸石的催化剂对甘油与叔丁醇的醚化的催化性能。与相对较低的沸石基催化剂（90°至110℃）相比，树脂基催化剂在相对较低的反应温度（75℃）下表现出更高的甘油转化率和醚选择性，但就产生大量二恶英的活性稳定性而言，沸石基催化剂表现更好。 -甘油的叔丁基（DTBG）和三叔丁基醚（TTBG）（加氧原料）。尽管酸度对于醚化反应很重要，但与酸度相比，显示出更好的孔隙率的沸石可以产生更高的含氧量。 N-BEA中晶间介孔的存在进一步提高了催化剂的含氧化合物产量和运行时间。在优化的催化剂参数和反应条件下，Nano-β（N-BEA）沸石催化剂显示出95％以上的甘油转化率，对DTBG和TTBG的选择性超过45％和54％，这是柴油的潜在混合原料。

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  • 来源
    《Fuel》 |2013年第1期|980-986|共7页
  • 作者

    Nagabhatla Viswanadham; Sandeep K. Saxena;

  • 作者单位

    Catalysis and Conversion Process Division, CSIR-Indian Institute of Petroleum, Dehradun 248 005, India;

    Catalysis and Conversion Process Division, CSIR-Indian Institute of Petroleum, Dehradun 248 005, India;

  • 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

    zeolites; acidity; pore volume; glycerol; oxygenate;

    机译：沸石酸度;孔体积甘油含氧化合物;

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