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Catalysts
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Catalytic Removal of Volatile Organic Compounds (VOCs)
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Catalytic Removal of Volatile Organic Compounds (VOCs)

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Environmental Catalysis".

Deadline for manuscript submissions: 15 November 2025 | Viewed by 2089

Special Issue Editors

Dr. Ralitsa Georgieva

E-Mail Website
Guest Editor
Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
Interests: environmental catalysts; VOC combustion; synthesis of catalysts; characterization; instrumental methods
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Anton Naydenov

E-Mail Website
Guest Editor
Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
Interests: environmental catalysis; reaction kinetics; mechanistic models of catalytic reactions; experimental investigation and mathematical modeling of different types of catalytic reactors; development of computation procedures for identifying the kinetics and mechanisms of catalytic reactions
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Volatile organic compounds, or VOCs, are the primary air pollutants today. Usually, several factors, such as transportation and industrial operations, are associated with their origin. Catalytic combustion is one of the most promising approaches for their removal at low concentrations. The application of various systematic research approaches related to the creation of new types of catalysts based on different noble metals or transition metal oxides is necessary for the development of systems for performing the catalytic neutralization of gases containing volatile organic compounds (VOCs), such as methane, propane, butane, and organic solvents.

This Special Issue will focus on developing novel catalysts for the catalytic removal of volatile organic compounds (VOCs). Reports that describe the innovative designs of various catalytic systems for testing at multiple scales, ranging from pilot plants to laboratory catalytic reactors, as well as experimental installations to obtain information on poisoning, thermal and hydrothermal stability, and the regeneration of catalysts, are also relevant.

Dr. Ralitsa Georgieva
Prof. Dr. Anton Naydenov
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • catalytic combustion
  • VOCs
  • noble metals
  • transition metal oxides
  • catalysts

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Published Papers (3 papers)

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Research

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16 pages, 2543 KiB  
Article
Enhancing Propane Dehydrogenation Performance on Cerium-Modified PtSnIn/Al Trimetallic Catalysts
by Jinbao Liu, Ke Xia and Fen Zhang
Catalysts 2025, 15(5), 506; https://doi.org/10.3390/catal15050506 - 21 May 2025
Viewed by 488
Abstract
The effects of Ce incorporation into trimetallic PtSnIn-supported catalysts were investigated for a propane dehydrogenation reaction with advanced characterization techniques. It was found that some Ce species exist in the form of CeAlO3 on the reduced PtSnIn/xCe-Al catalyst, significantly enhancing [...] Read more.
The effects of Ce incorporation into trimetallic PtSnIn-supported catalysts were investigated for a propane dehydrogenation reaction with advanced characterization techniques. It was found that some Ce species exist in the form of CeAlO3 on the reduced PtSnIn/xCe-Al catalyst, significantly enhancing the thermal stability of the alumina support. The NH3-TPD measurements verified that the total acidity of the PtSnIn/xCe-Al catalysts decreases with the addition of Ce. The PtSnIn/1.5Ce-Al catalyst exhibits the optimal particle distribution with the smallest Pt particle size of 8.0 nm, which was revealed by TEM. The H2-TPR and XPS results suggest that more oxidized-state Sn species form on catalyst surfaces, and the metal–support interaction can be strengthened when Ce is introduced. Furthermore, TG analysis demonstrates that Ce incorporation substantially reduces coke formation on the spent catalysts. The PtSnIn/1.5Ce-Al catalyst exhibits exceptional catalytic performance, achieving an initial propane conversion of 62.6% and maintaining a conversion of 57.2% after a 120 min reaction. In addition, the PtSnIn/1.5Ce-Al catalyst possesses high long-term stability. Over 40.0% propane conversion can be maintained after a 53 h continuous PDH reaction. These findings highlight the pivotal role of Ce in improving the structural properties and catalytic performance of PtSnIn-based catalysts for propane dehydrogenation, offering valuable insights for the design of highly efficient and stable dehydrogenation catalysts. Full article
(This article belongs to the Special Issue Catalytic Removal of Volatile Organic Compounds (VOCs))
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15 pages, 2176 KiB  
Article
A Promising Monolithic Catalyst for Advanced VOCs Oxidation by Graphene-Doped α-MnO2 Loaded on Cordierite Honeycomb
by Yilin Dong, Yiyang Zhao, Jing Sun, Yafang Shen, Xiqiang Zhao, Wenlong Wang, Zhanlong Song and Yanpeng Mao
Catalysts 2025, 15(4), 321; https://doi.org/10.3390/catal15040321 - 27 Mar 2025
Cited by 1 | Viewed by 576
Abstract
A high-activity, low-cost, and easy-to-prepare monolithic catalyst is crucial for the industrial catalytic combustion of volatile organic compounds (VOCs) in a cost-effective manner. In this study, a highly efficient monolithic catalyst, designated as 4GM/COR, was developed by loading 4% graphene-doped α-MnO2 (4GM) [...] Read more.
A high-activity, low-cost, and easy-to-prepare monolithic catalyst is crucial for the industrial catalytic combustion of volatile organic compounds (VOCs) in a cost-effective manner. In this study, a highly efficient monolithic catalyst, designated as 4GM/COR, was developed by loading 4% graphene-doped α-MnO2 (4GM) catalyst onto pre-etched cordierite (COR) blocks using a straightforward “ball-milling-assisted impregnation” method. The anchoring force of the cordierite pores, generated through oxalic acid etching, enables the uniform and robust loading of powdered 4GM onto COR, preventing detachment under high temperatures or high gas flow rates. The loading rate, specific surface area, and concentrations of Mn3+ and surface-lattice and absorbed oxygen species in the monolithic catalyst increase with impregnation times from 2 to 4, indicating that catalytic activity is optimized through repeated impregnation. Catalytic performance tests demonstrated that the 4-4GM/COR exhibited the highest activity, achieving 90% degradation of toluene at 200 °C under both dry and humid (relative humidity is 85%) conditions. Furthermore, the 4-4GM/COR maintains high catalytic stability and activity even at a large GHSV of 6000 h−1. To conclude, the 4-4GM/COR monolithic catalyst developed in this study not only represents a promising option for industrial applications but also serves as an important reference for the synthesis of monolithic catalysts. Full article
(This article belongs to the Special Issue Catalytic Removal of Volatile Organic Compounds (VOCs))
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Review

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19 pages, 2109 KiB  
Review
Microenvironment Regulation in Zeolite-Based Catalysts for Selective Oxidation of Aromatic VOCs
by Xiaoxin Chen, Wenwen Ma and Guoju Yang
Catalysts 2025, 15(6), 581; https://doi.org/10.3390/catal15060581 - 11 Jun 2025
Viewed by 604
Abstract
Aromatic volatile organic compounds (VOCs) pose significant environmental and public health risks due to their toxicity, carcinogenicity, and role as precursors of hazardous secondary pollutants. Zeolite-based metal catalysts, with their well-defined microporous structures, tunable acidity, and high thermal stability, have shown promise in [...] Read more.
Aromatic volatile organic compounds (VOCs) pose significant environmental and public health risks due to their toxicity, carcinogenicity, and role as precursors of hazardous secondary pollutants. Zeolite-based metal catalysts, with their well-defined microporous structures, tunable acidity, and high thermal stability, have shown promise in the catalytic oxidation of aromatic VOCs. However, the influence of the zeolite microenvironment on supported metal active sites remains insufficiently understood, limiting the rational design of advanced catalysts. This review highlights how microenvironmental parameters—including pore architecture, acid site distribution, framework composition, and surface/interface engineering—can be modulated to enhance adsorption, oxygen activation, and metal–support interactions. Advances in hierarchical porosity, heteroatom substitution, and surface hydrophobicity are discussed. This review provides a framework for the development of next-generation zeolite-based catalysts and offers strategic guidance for advancing microenvironment-controlled catalysis in sustainable environmental remediation. Full article
(This article belongs to the Special Issue Catalytic Removal of Volatile Organic Compounds (VOCs))
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