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分子筛硅铝比及晶粒粒径对 Cu-ZnO-Al2O3/HZSM-5催化剂直接合成二甲醚反应性能的影响

毛东森 夏建超

毛东森, 夏建超. 分子筛硅铝比及晶粒粒径对 Cu-ZnO-Al2O3/HZSM-5催化剂直接合成二甲醚反应性能的影响[J]. 燃料化学学报(中英文), 2012, 40(02): 235-240.
引用本文: 毛东森, 夏建超. 分子筛硅铝比及晶粒粒径对 Cu-ZnO-Al2O3/HZSM-5催化剂直接合成二甲醚反应性能的影响[J]. 燃料化学学报(中英文), 2012, 40(02): 235-240.
MAO Dong-sen, XIA Jian-chao. Effects of silicon to aluminum ratio and crystal size of zeolite on catalytic properties of Cu-ZnO-Al2O3/HZSM-5 for the direct synthesis of dimethyl ether from syngas[J]. Journal of Fuel Chemistry and Technology, 2012, 40(02): 235-240.
Citation: MAO Dong-sen, XIA Jian-chao. Effects of silicon to aluminum ratio and crystal size of zeolite on catalytic properties of Cu-ZnO-Al2O3/HZSM-5 for the direct synthesis of dimethyl ether from syngas[J]. Journal of Fuel Chemistry and Technology, 2012, 40(02): 235-240.

分子筛硅铝比及晶粒粒径对 Cu-ZnO-Al2O3/HZSM-5催化剂直接合成二甲醚反应性能的影响

基金项目: 上海市科委项目(08520513600); 上海市教委重点学科建设项目(J51503)。
详细信息
  • 中图分类号: O643

Effects of silicon to aluminum ratio and crystal size of zeolite on catalytic properties of Cu-ZnO-Al2O3/HZSM-5 for the direct synthesis of dimethyl ether from syngas

  • 摘要: 采用水热晶化法合成了硅铝比(SiO2/Al2O3)为60、120、200和晶粒粒径分别为1.00和0.25 μm的HZSM-5分子筛,并以其为甲醇脱水活性组分与铜基甲醇合成活性组分(Cu-ZnO-Al2O3)组成双功能催化剂(Cu-ZnO-Al2O3/HZSM-5),在连续流动加压固定床反应器上考察了Cu-ZnO-Al2O3/HZSM-5对合成气直接制二甲醚反应的催化性能。结果表明,随着分子筛硅铝比的提高,二氧化碳副产物的生成量逐渐减少,从而使目的产物二甲醚的选择性逐渐增大。与常规分子筛相比,小晶粒分子筛的反应活性接近,但二氧化碳和烃类副产物的选择性较低。
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出版历程
  • 收稿日期:  2011-03-25
  • 修回日期:  2011-07-01
  • 刊出日期:  2012-02-29

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