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<p>In this article, the strip catalyst of NA(nano-alumina) and PB (pseudo-boehmite) were prepared as binders to explore the effect of the amount of binder on the performance of the strip catalyst. The performance of the forming catalyst was analyzed by XRD, SEM, NH<sub>3</sub>-TPD and FTIR. The rare earth tailings-based strip catalysts prepared using Bayan Obo rare earth tailings as raw material with binder addition exhibit excellent denitration activity and mechanical strength. The catalyst prepared using NA as the binder demonstrates superior denitration performance compared to the catalyst formed with PB as the binder. In the range of 100 to 500 ℃, the selective catalytic reduction (SCR) efficiency of rare earth tailings is only 8.2%; the SCR efficiency of strip catalyst prepared with 15% NA gel is 62.5% and the longitudinal compressive strength is 1.15&#xa0;MPa. After adding aluminum sol (NA or PB), the denitration performance of rare earth tailings increased by 54.3%. This study has certain guiding significance for the preparation of denitration catalyst of rare earth tailings.</p>

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Study on the influence of aluminum gel on the selective catalytic reduction performance of formed catalysts

  • 期刊论文

  • 发表日期：

    2025年8月26日

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  • Junmao Qie,
  • Shuqi Zhang,
  • Qunying Wang,
  • Zefeng Zhao,
  • Tong Xu,
  • Mengfei Cao

摘要

In this article, the strip catalyst of NA(nano-alumina) and PB (pseudo-boehmite) were prepared as binders to explore the effect of the amount of binder on the performance of the strip catalyst. The performance of the forming catalyst was analyzed by XRD, SEM, NH3-TPD and FTIR. The rare earth tailings-based strip catalysts prepared using Bayan Obo rare earth tailings as raw material with binder addition exhibit excellent denitration activity and mechanical strength. The catalyst prepared using NA as the binder demonstrates superior denitration performance compared to the catalyst formed with PB as the binder. In the range of 100 to 500 ℃, the selective catalytic reduction (SCR) efficiency of rare earth tailings is only 8.2%; the SCR efficiency of strip catalyst prepared with 15% NA gel is 62.5% and the longitudinal compressive strength is 1.15 MPa. After adding aluminum sol (NA or PB), the denitration performance of rare earth tailings increased by 54.3%. This study has certain guiding significance for the preparation of denitration catalyst of rare earth tailings.