Promotion effect of element doping on the moisture resistance property of iron-based spinel catalysts for CO-SCR reaction

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-03-20 DOI:10.1016/j.jtice.2025.106097

Xiaotong Li , Jie Zhou , Mingzhe Dong , Wenpeng Tong , Lei Zhong , Songjian Zhao

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Abstract

Background

Research on the carbon monoxide selective catalytic reduction of nitric oxides (CO-SCR) primarily emphasizes the conversion of NO_x and the resistance to moisture at low temperatures.

Methods

A series of MFe₂O₄ catalysts, where M represented Cu, Co, Ni, and Mn, were synthesized through a solvothermal method and subsequently utilized in research focused on CO-SCR.

Significant findings

NiFe₂O₄ exhibited excellent NO conversion in the range of 150∼250 °C, reaching 100 % conversion at 225 °C. Also, it possessed well CO conversion rate, water resistance, and stability. It was found that the main active site of CO-SCR over NiFe₂O₄ catalyst was the redox balance of synergistic effect between Ni and Fe, which accelerated electron transfer. The improvement of the denitration performance of the nickel doping could be attributed to more active surface oxygen, more active component ratio (Fe²⁺), and larger specific surface area. This study provided an idea for exploring efficient and stable CO-SCR catalysts.

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.