STUDY OF NON-HYDROGEN TRANSFORMATION OF MODEL n-ALKANES AND A DIESEL FRACTION OVER La-Zn-Mn/Al2O3+ZSM-CATALYST
作者: Aizhan OmarovaLarissa SassykovaMarat TulepovNurbubi Zhakirova
刊名: Journal of Chemical Technology and Metallurgy, 2019, Vol.54 (3)
来源数据库: University of Chemical Technology and Metallurgy
关键词: Catalytic crackingModified zeolitesC6 - alkanesC14 - alkanesHigh - octane gasoline
原始语种摘要: This work presents the study of the conversion of model mixtures of C6-, C14-alkanes and a diesel fraction over ZSM-containing catalyst modified with manganese, lanthanum and zinc additives. Physico-chemical methods, including TEM and IR, are applied for the characterization of the catalysts used. The presence of Brönsted and Lews acid centers as M0 - or Mn+-metal centers is identified. It is found that the structure of the acid centers can include MnSiO3, La5Si, Mn15Si26, LaMn2Si2, La Al11O18, La2Si2O7, La3Si2, functioning as Lewis acid centers. The results of the study show that the degree of conversion of hexane and tetradecane as well as the composition of the resulting compounds are determined by the length of the hydrocarbon chain and the conditions of the process.
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关键词翻译
关键词翻译
  • alkanes 链烷烃
  • centers 机组间距
  • catalyst 催化剂
  • lanthanum 
  • conversion 转换
  • octane 辛烷
  • cracking 裂开
  • hexane 己烷
  • tetradecane 十四烷
  • hydrocarbon 碳氢化合物