One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH<sub>3</sub> at low temperature

Shuang Qiu; Yonghou Xiao; Haoran Wu; Shengnan Lu; Qidong Zhao; Gaohong He

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One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH₃ at low temperature

Full Length Article | Updated：2026-01-06

- One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH₃ at low temperature
- One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH₃ at low temperature
- 中国化学工程学报（英文版） 2023年56卷第4期页码：193-202
- Affiliations：
  
  1. Panjin Institute of Industrial Technology, Liaoning Key Laboratory of Chemical Additive Synthesis and Separation, Dalian University of Technology,Panjin,China,124221
  2. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology,Panjin,China,124221
  3. School of Petrochemical Engineering, Shenyang University of Technology,Liaoyang,China,111003
- Author bio：
- Funds：
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  中图分类号：
- 纸质出版：2023
- Accepted：
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Shuang Qiu, Yonghou Xiao, Haoran Wu, 等. One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH₃ at low temperature[J]. 中国化学工程学报（英文版）, 2023,56(4):193-202.

at low temperature[J]. 中国化学工程学报, 2023, 56(4): 193-202.
Shuang Qiu, Yonghou Xiao, Haoran Wu, 等. One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH₃ at low temperature[J]. 中国化学工程学报（英文版）, 2023,56(4):193-202. DOI：

at low temperature[J]. 中国化学工程学报, 2023, 56(4): 193-202. DOI：

摘要

Abstract

selective catalytic reduction (SCR) has been widely recognized as a promising technique for reducing nitrogen oxides from diesel vehicle exhausts. High-efficiency SCR catalysts that could perform at low temperatures are essential to denitration. In this work

a series of bimetallic CeCu-SAPO-34 molecular sieves were synthesized by one-step hydrothermal method. The CeCu-SAPO-34 maintained good crystallinity and a regular hexahedron appearance of Cu-SAPO-34 after introducing Ce species

while exhibiting a higher specific surface area and pore volume. The as-prepared CeCu-SAPO-34 with 0.02% (mass) Ce constituent exhibited the best catalytic activity below 300 ℃ and a maximum NO

conversion of 99% was attained; the NO

removal rates of more than 68% and 94% were achieved at 150 ℃ and 200 ℃

respectively. And the introduction of cerium species in Cu-SAPO-34 improves the low-temperature hydrothermal stability of the catalyst towards NH

-SCR reaction. Additionally

the introduced Ce species could enhance the formation of abundant weak Brønsted acid centers and promote the synergistic effect between CuO grains and

isolated Cu

to enhance the redox cycle

which benefit the NH

-SCR reaction. This work provides a facile synthesis method of high-efficiency SCR denitration catalysts towards diesel vehicles exhaust treatment under low temperature.

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One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH3 at low temperature

One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH3 at low temperature

DOI：

摘要

Abstract

关键词

Keywords

references

One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH₃ at low temperature

One-pot synthesis of bimetallic CeCu-SAPO-34 for high-efficiency selective catalytic reduction of nitrogen oxides with NH₃ at low temperature