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Abstract <p>The effect of integration iron cations into zeolite ZSM-5 on the physicochemical properties of the material and the direction of transformation of <i>n-</i>dodecane and 2-methylthiophenes (5000 ppm S) in catalytic cracking was investigated. The integration of iron led to a significant increase in the total acidity of zeolites with SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios of 23 and a slight increase for zeolites with SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios of 80. For both types, the volume of micropore remained unchanged. It was found that modifying zeolite ZSM-5 with SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios of 23 with iron increased the yield of aromatic compounds from 27.1 to 38.1 wt %, and light olefins from 22.5 to 30.3%. The content of sulfur compounds decreases by 44% with an increase in the proportion of iron oxide in zeolite ZSM-5 with SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratios of 23.</p>

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Effect of ZSM-5 Zeolite Modification by Iron Cations on the Direction of n-Dodecane Transformations in the Presence of 2-Methylthiophene

  • 期刊论文

  • 发表日期：

    2025年5月1日

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  • A. I. Izoitko,
  • A. S. Gilyazutdinova,
  • V. A. Koveza,
  • O. V. Potapenko

摘要

Abstract

The effect of integration iron cations into zeolite ZSM-5 on the physicochemical properties of the material and the direction of transformation of n-dodecane and 2-methylthiophenes (5000 ppm S) in catalytic cracking was investigated. The integration of iron led to a significant increase in the total acidity of zeolites with SiO2/Al2O3 ratios of 23 and a slight increase for zeolites with SiO2/Al2O3 ratios of 80. For both types, the volume of micropore remained unchanged. It was found that modifying zeolite ZSM-5 with SiO2/Al2O3 ratios of 23 with iron increased the yield of aromatic compounds from 27.1 to 38.1 wt %, and light olefins from 22.5 to 30.3%. The content of sulfur compounds decreases by 44% with an increase in the proportion of iron oxide in zeolite ZSM-5 with SiO2/Al2O3 ratios of 23.