Effect of citric acid modification on denitration performance of CeO2-WO3/TiO2 catalyst

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2025-01-20 DOI:10.1016/j.apcata.2025.120121

Yuming Yang , Xue Bian , Feng Xie , Yuting Bai

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引用次数: 0

Abstract

This study investigates the performance regulation and mechanism of citric acid on the CeO₂-WO₃/TiO₂ catalyst. The CeO₂-WO₃/TiO₂-6 % catalyst exhibits a denitrification conversion rate exceeding 90 % within the temperature range of 217–517°C, with a significantly broader working temperature window. Additionally, it demonstrates excellent N₂ selectivity and superior resistance to water and sulfur. Through a series of characterization methods, the physical and chemical properties of the catalyst were analyzed. The results indicate that the complexation of an appropriate amount of citric acid with Ce and W can refine the grain size, increase the specific surface area, and provide more acidic sites, significantly improving the adsorption properties. Moreover, the addition of citric acid during the preparation process can promote the electron transfer between active elements, increase the oxygen vacancy content, and enhance the catalyst's redox properties.

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来源期刊

Applied Catalysis A: General 化学-环境科学

CiteScore

9.00

自引率

5.50%

发文量

415

审稿时长

24 days

期刊介绍： Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications. Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.