Low-temperature catalytic oxidation of toluene using CeO2@MIL-101(Fe): Stability against water and SO2

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection Pub Date : 2025-03-11 DOI:10.1016/j.psep.2025.107005

David Murindababisha , Abubakar Yusuf , Kien-Woh Kow , Yong Sun , Run Pan , Yong Ren , George Zheng Chen , Jianrong Li , Chengjun Wang , Jun He

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引用次数: 0

Abstract

Toluene, a volatile organic compound (VOC), poses significant environmental and health risks, necessitating efficient abatement technologies. This study explores the catalytic oxidation of toluene using CeO₂-supported MIL-101(Fe) metal-organic frameworks (MOFs). A series of CeO₂@MIL-101(Fe) catalysts with varying Ce loadings were synthesized and characterized through XRD, BET, XPS, SEM-EDS, HRTEM, H₂-TPR, and in situ DRIFTS analyses. Among the synthesized materials, 6 % CeO₂@MIL-101(Fe) exhibited superior catalytic performance, achieving 90 % toluene conversion (T₉₀) at 239 °C, alongside remarkable stability over 60 hours. The catalyst demonstrated high tolerance to water vapor and sulfur dioxide (SO₂), with full activity recovery after inhibitor removal. In situ DRIFTS and PTR-MS provided insights into the reaction mechanism, indicating that lattice oxygen plays a crucial role in toluene activation. The synergistic interaction between CeO₂ and MIL-101(Fe) enhances redox properties and oxygen mobility, improving catalytic efficiency. These findings offer valuable insights into designing robust, MOF-based catalysts for VOC removal, providing a promising approach to mitigating air pollution.

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来源期刊

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.