Rare Earth Catalysis: From Synthesis to Sustainable Applications

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

Deadline for manuscript submissions: 30 September 2024 | Viewed by 2197

Special Issue Editors


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Guest Editor
School of Environment, Nanjing Normal University, Nanjing 210098, China
Interests: environmental catalysis; rare earth-based catalysts; porous materials

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Guest Editor
Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
Interests: environmental catalysis; rare earth absorbent; design and construction of catalytic materials

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Guest Editor
School of Chemical Engineering, Sichuan University, Chengdu 610065, China
Interests: nanomaterials science and engineering for energy and environment applications: hierarchical low-dimensional nanostructures and porous materials synthesis; manufacturing of nanomaterials; environmental catalysis; industrial waste gas purification; indoor air purification; composite functional films; catalytic reactor design; nanoscale chemical sensors; bacteria-killing nanomaterials
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
Interests: diesel exhaust denitrification; ultra-deep desulfurization and resource utilization of fuel oil
Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610064, China
Interests: heterogeneous catalysis; functional materials
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Special Issue Information

Dear Colleagues,

Catalysis plays an essential role in achieving the fascinating goal of sustainable development of our society. Rare earth oxides, one kind of the most famous heterogeneous catalysts, have found wide application in many industrial important processes ranging from water-gas-shift (WGS) to fluid catalytic cracking (FCC) to three-way catalysis (TWC). In addition to the production of industrial chemicals and abatement of environment pollutants, rare earth catalysis also holds great promise in fulfilling the ultimate goal of carbon neutrality. It is well known that the catalytic efficiency of rare earth catalysts relies heavily on their preparation. With the rapid development of catalyst preparation technology and the upgrading of advanced characterization technology, recent years have witnessed a tremendous progress in the preparation, characterization, and application of rare earth catalysts.

Under this background, this Special Issue is devoted to the synthesis of rare earth catalysts and their applications in such sustainable fields as environment protection, energy generation, and the production of chemicals. The main attention will be focused on comprehensive experimental studies of synthesis, characterization, and evaluation of catalyst performance in areas such as, but not limited to, CO oxidation, NO reduction, N2O decomposition, NH3 partial oxidation, NH3 synthesis, NH3 decomposition, water–gas–shift (WGS), CH4 conversion, CO2 reduction, hydrogen evolution reaction (HER), and oxygen reduction reaction (ORR). The proposed topics include, but are not limited to, the following:

  • Preparation of rare earth catalysts;
  • Characterization of rare earth catalysts;
  • Rare earth catalysis in environment protection (CO oxidation, NO reduction, VOCs elimination and et al.);
  • Rare earth catalysis in energy generation (CO2 reduction, H2 generation);
  • Rare earth catalysis for chemicals production.

Prof. Dr. Changjin Tang
Prof. Dr. Qiulin Zhang
Dr. Wenxiang Tang
Dr. Jixing Liu
Dr. Haidi Xu
Guest Editors

Manuscript Submission Information

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Keywords

  • rare earth catalysts
  • environment protection
  • energy generation
  • chemicals production
  • porous materials
  • interface control
  • synergistic effect

Published Papers (2 papers)

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Research

19 pages, 5532 KiB  
Article
Influence of Particle Size of CeO2 Nanospheres Encapsulated in SBA-15 Mesopores on SO2 Tolerance during NH3-SCR Reaction
by Xinyu Han, Mengyao Bian, Kaijie Liu, Xin Yang, Daying Zheng, Xiangguang Yang and Yibo Zhang
Catalysts 2024, 14(2), 151; https://doi.org/10.3390/catal14020151 - 18 Feb 2024
Viewed by 992
Abstract
Ce-based selective catalytic reductions with an NH3 (NH3-SCR) catalyst have emerged as a focal point in denitrification catalyst research. However, the correlation between the structural characteristics of Ce-based catalysts and the influence of CeO2 nanoparticle size on SO2 [...] Read more.
Ce-based selective catalytic reductions with an NH3 (NH3-SCR) catalyst have emerged as a focal point in denitrification catalyst research. However, the correlation between the structural characteristics of Ce-based catalysts and the influence of CeO2 nanoparticle size on SO2 resistance remains unclear. CeO2 nanospheres with different sizes of less than 10 nm were synthesized, and a series of supported CeO2/SBA-15 catalysts were prepared according to the 10 nm pore size of SBA-15. These catalysts were used to explore the influence of the size of the CeO2 nanospheres on these catalysts, specifically on their SO2 resistance in NH3-SCR reactions. With the increase in size, their SO2 resistance became stronger. The results of NH3-TPD, H2-TPR, and XPS indicated that the catalyst with the largest particle size had the lowest adsorption of SO2, which was attributed to more acid sites and a mutual effect between Si and Ce, resulting in the best SO2 resistance. It was also observed that there was less sulfate deposition on the catalyst by thermogravimetric analysis. In situ DRIFTs revealed that after SO2 poisoning, the NH3-SCR reaction on the catalyst predominantly follows the E-R mechanism. This study offers recommendations for the development of Ce-based SO2-resistant NH3-SCR catalysts, specifically focusing on the synthesis and interaction of nanomaterials. Full article
(This article belongs to the Special Issue Rare Earth Catalysis: From Synthesis to Sustainable Applications)
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16 pages, 7713 KiB  
Article
Improvement of NH3-SCR Performance by Exposing Different Active Components in a VCeMn/Ti Catalytic System
by Shifei Gu, Chengheng Huang, Xiaorong Han, Qiuju Qin, Donghai Mo, Chen Li, Yuhua You, Lihui Dong and Bin Li
Catalysts 2024, 14(2), 131; https://doi.org/10.3390/catal14020131 - 07 Feb 2024
Viewed by 842
Abstract
The physicochemical properties of active components play a key role in enhancing catalytic performance. In multi-component catalysts, different components offer a wide range of structural possibilities and catalytic potential. However, determining the role of specific components in enhancing efficiency may be blurry. This [...] Read more.
The physicochemical properties of active components play a key role in enhancing catalytic performance. In multi-component catalysts, different components offer a wide range of structural possibilities and catalytic potential. However, determining the role of specific components in enhancing efficiency may be blurry. This study synthetized a range of catalysts with various metal compositions on their external surfaces to investigate their catalytic activity on NH3-SCR. The V/CeMn/Ti catalysts exhibited exceptional catalytic efficiency and strong tolerance to SO2 during the SCR process. In the system, Mn and Ce facilitated electron transfer during the catalytic removal of NOx. As an assisting agent, increased the number of active species and acidic sites, playing a crucial role in oxidizing NO to NO2 and facilitating the denitrogenation reaction process at low temperatures. Further studies showed that the three ingredients exhibited unique adsorbent behaviors on the reacting gases, which provided different catalytic possibilities. This work modeled the particular catalysis of V and Ce (Mn) species, respectively, and offers experimental instruction for improving the activity and excellent tolerance to SO2 by controlling active ingredients. Full article
(This article belongs to the Special Issue Rare Earth Catalysis: From Synthesis to Sustainable Applications)
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