Scholarlink

Abstract <p>A series of additives based on an iron-modified MFI zeolite were investigated for their ability to reduce NO<sub><i>x</i></sub> in cracking catalyst regeneration flue gases. Their efficiency was dependent on the iron loading, the zeolite SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratio, and the initial cationic form used for modification. The Fe/MFI additives prepared from an NH<sub>4</sub>-form zeolite with a low SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratio (23) demonstrated excellent performance. Under industrially relevant catalyst regeneration conditions, the additive with an optimized iron oxide content (within a tested range of 0.5 to 2.5 wt %) reached a NO<sub><i>x</i></sub> reduction efficiency of 45.4%.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The Efficiency of Fe/MFI Additives in Reducing NOx in Cracking Catalyst Regeneration Flue Gas

  • 期刊论文

  • 发表日期：

    2025年10月1日

查看全文
  • E. O. Kuziuberdina,
  • V. A. Koveza,
  • T. V. Bobkova,
  • T. V. Larina,
  • A. B. Arbuzov,
  • O. V. Potapenko

摘要

Abstract

A series of additives based on an iron-modified MFI zeolite were investigated for their ability to reduce NOx in cracking catalyst regeneration flue gases. Their efficiency was dependent on the iron loading, the zeolite SiO2/Al2O3 ratio, and the initial cationic form used for modification. The Fe/MFI additives prepared from an NH4-form zeolite with a low SiO2/Al2O3 ratio (23) demonstrated excellent performance. Under industrially relevant catalyst regeneration conditions, the additive with an optimized iron oxide content (within a tested range of 0.5 to 2.5 wt %) reached a NOx reduction efficiency of 45.4%.