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Advances in Catalytic Oxidation of Methane and Carbon Monoxide, 2nd...
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Advances in Catalytic Oxidation of Methane and Carbon Monoxide, 2nd Edition

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

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 20301

Special Issue Editors

Prof. Dr. Hongxing Dai

E-Mail Website
Guest Editor
Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
Interests: heterogeneous catalysis; environmental catalysis; photocatalysis; methane combustion; VOCs removal
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Junhu Wang

E-Mail Website
Guest Editor
Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
Interests: in situ/operando spectroscopic characterizations (mainly Mössbauer spectroscopy) applied in chemistry and environmental and energy catalysis; highly efficiency heterogeneous catalytic materials; high-temperature anti-sintering supported metal catalysts by designing the novel strong metal–support interactions (SMSI)
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Following a successful first edition, we are pleased to announce the launch of the second edition of a Special Issue entitled “Advances in Catalytic Oxidation of Methane and Carbon Monoxide”.

This Special Issue aims to provide an account of recent advances in the catalytic oxidation of methane and carbon monoxide. The proposed Special Issue will cover the following aspects. Invited papers dealing with some of these aspects will be considered for this Special Issue. We welcome original research articles and reviews. Routine research is not suitable for this Special Issue.

Concepts/themes:

Development of catalysts, catalytic reactions, and processes; chemical engineering reactor design, reaction kinetics and mechanism; lab-scale and bench-scale process development; optimum conditions, catalytic efficiency, stability and sustainability, resistance to steam deactivation, etc.

Determination of the structure and morphology of the catalyst and support, interactions of the support with the catalyst, changes in crystallite sizes, shape and chemical state of the catalyst in the presence of the support, catalyst–support interfaces, structural variations in the catalyst, effects of catalyst–support interactions on particle size distribution, etc.

Techniques: Improvements/innovations in catalytic process development and reactor design; analytical techniques including scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), scanning/transmission electron microscopy (S/TEM), spherical aberration-corrected scanning/transmission electron microscopy (Cs-S/TEM); X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), infra-red spectroscopy (ir), X-ray absorption near-edge structure (XANES), extended X-ray absorption fine structure (EXAFS); chemisorption and temperature programmed reduction; theoretical/computational studies, etc.

Applications: Catalytic activity, reaction rate, turnover frequency, activation energy, reaction mechanism; development of more sustainable catalysts by e.g. green/renewable synthesis of support, replacement of rare metals with available alternatives, etc.

Prof. Dr. Hongxing Dai
Prof. Dr. Junhu Wang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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 oxidation of methane
  • catalytic oxidation of carbon monoxide
  • process development
  • catalyst development
  • catalyst characterization
  • reaction mechanism
  • catalyst–support interactions
  • sustainable catalyst
  • reactor design
  • lab-scale and bench-scale process development

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Published Papers (8 papers)

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Editorial

Jump to: Research, Review

4 pages, 179 KiB  
Editorial
Advances in Catalytic Oxidation of Methane and Carbon Monoxide (2nd Edition)
by Hongxing Dai and Junhu Wang
Catalysts 2024, 14(9), 642; https://doi.org/10.3390/catal14090642 - 20 Sep 2024
Viewed by 802
Abstract
The catalytic removal of carbon monoxide and methane produced from human activities is an important method for eliminating these pollutants, and can solve their associated environmental problems [...] Full article
(This article belongs to the Special Issue Advances in Catalytic Oxidation of Methane and Carbon Monoxide, 2nd Edition)

Research

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15 pages, 2471 KiB  
Article
Identifying the Active Phase of RuO2 in the Catalytic CO Oxidation Reaction, Employing Operando CO Infrared Spectroscopy and Online Mass Spectrometry
by Phillip Timmer, Lorena Glatthaar, Tim Weber and Herbert Over
Catalysts 2023, 13(8), 1178; https://doi.org/10.3390/catal13081178 - 1 Aug 2023
Cited by 5 | Viewed by 2139
Abstract
Operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) is combined with online mass spectrometry (MS) to help to resolve a long-standing debate concerning the active phase of RuO2 supported on rutile TiO2 (RuO2@TiO2) during the CO oxidation [...] Read more.
Operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) is combined with online mass spectrometry (MS) to help to resolve a long-standing debate concerning the active phase of RuO2 supported on rutile TiO2 (RuO2@TiO2) during the CO oxidation reaction. DRIFTS has been demonstrated to serve as a versatile probe molecule to elucidate the active phase of RuO2@TiO2 under various reaction conditions. Fully oxidized and fully reduced catalysts serve to provide reference DRIFT spectra, based on which the operando CO spectra acquired during CO oxidation under various reaction conditions are interpreted. Partially reduced RuO2@TiO2 was identified as the most active catalyst in the CO oxidation reaction. This is independent of the reaction conditions being reducing or oxidizing and whether the starting catalyst is the fully oxidized RuO2@TiO2 or the partially reduced RuO2@TiO2. Full article
(This article belongs to the Special Issue Advances in Catalytic Oxidation of Methane and Carbon Monoxide, 2nd Edition)
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15 pages, 3703 KiB  
Article
Au Clusters Supported on Defect-Rich Ni-Ti Oxides Derived from Ultrafine Layered Double Hydroxides (LDHs) for CO Oxidation at Ambient Temperature
by Ayu Takahashi, Akihiro Nakayama, Toru Murayama, Norihito Sakaguchi, Tetsuya Shimada, Shinsuke Takagi and Tamao Ishida
Catalysts 2023, 13(8), 1155; https://doi.org/10.3390/catal13081155 - 26 Jul 2023
Viewed by 1305
Abstract
Ultrafine layered double hydroxides (LDHs) have abundant hydroxy groups at their edge sites, serving as anchor sites for metal NPs. Furthermore, transformation of ultrafine LDHs into mixed metal oxides (MMOs) generates abundant oxygen vacancies, which are advantageous for O2 activation during Au-catalyzed [...] Read more.
Ultrafine layered double hydroxides (LDHs) have abundant hydroxy groups at their edge sites, serving as anchor sites for metal NPs. Furthermore, transformation of ultrafine LDHs into mixed metal oxides (MMOs) generates abundant oxygen vacancies, which are advantageous for O2 activation during Au-catalyzed CO oxidation. We used ultrafine Ni-Ti LDHs with low crystallinity or Ni-Ti MMOs supported on SiO2 onto which Au NPs were deposited by deposition–precipitation (DP) and DP–urea (DPU). The catalytic activity of the Au catalysts was significantly affected by the preparation method, with the highest activity obtained by depositing Au onto LDH/SiO2 by DPU, followed by transformation of LDH to MMO (Au/Ni-Ti MMO/SiO2 (LDH-DPU)). The presence of Au on LDHs affected the transformation of LDHs into MMOs, resulting in LDH-DPU having the greatest number of oxygen vacancies in the TiO2 domain in MMOs. Consequently, the adsorbed or the lattice oxygen on the surface of LDH-DPU can be easily utilized for CO oxidation at low temperatures. Moreover, the catalytic activity of LDH-DPU increased with water vapor concentration up to 100% relative humidity at room temperature, suggesting the potential of Au/Ni-Ti MMO/SiO2 as an air purification catalyst. Full article
(This article belongs to the Special Issue Advances in Catalytic Oxidation of Methane and Carbon Monoxide, 2nd Edition)
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12 pages, 10025 KiB  
Article
CO Oxidation Catalyzed by Au Dispersed on SBA-15 Modified with TiO2 Films Grown via Atomic Layer Deposition (ALD)
by Xiangdong Qin, Wang Ke, Yovanny Vazquez, Ilkeun Lee and Francisco Zaera
Catalysts 2023, 13(7), 1106; https://doi.org/10.3390/catal13071106 - 15 Jul 2023
Cited by 4 | Viewed by 1498
Abstract
It has been established that gold, when in nanoparticle (NP) form and in contact with reducible oxides, can promote oxidation reactions under mild conditions. Here, we report results from our exploration of the catalytic oxidation of carbon monoxide using catalysts where Au NPs [...] Read more.
It has been established that gold, when in nanoparticle (NP) form and in contact with reducible oxides, can promote oxidation reactions under mild conditions. Here, we report results from our exploration of the catalytic oxidation of carbon monoxide using catalysts where Au NPs were combined with thin titanium oxide films deposited on SBA-15 using atomic layer deposition (ALD). Both orders of deposition, with TiO2 added either before or after Au dispersion, were tested for two titania film thicknesses amounting to about half and full TiO2 monolayers. The resulting catalysts were characterized using various techniques, mainly electron microscopy and N2 adsorption–desorption isotherms, and the kinetics of the oxidation of CO with O2 were followed using infrared absorption spectroscopy. A synergy between the Au and TiO2 phases as it relates to the bonding and conversion of CO was identified, the tuning of which could be controlled by varying the synthetic parameters. The ALD of TiO2 films proved to be an effective way to maximize the Au-TiO2 interface sites, and with that help with the activation of molecular oxygen. Full article
(This article belongs to the Special Issue Advances in Catalytic Oxidation of Methane and Carbon Monoxide, 2nd Edition)
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Review

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29 pages, 13059 KiB  
Review
Exploring the Methane to Methanol Oxidation over Iron and Copper Sites in Metal–Organic Frameworks
by Francesco Tavani, Alessandro Tofoni and Paola D’Angelo
Catalysts 2023, 13(10), 1338; https://doi.org/10.3390/catal13101338 - 3 Oct 2023
Cited by 2 | Viewed by 2762
Abstract
The direct oxidation of methane to methanol (MTM) is a significant challenge in catalysis and holds profound economic implications for the modern chemical industry. Bioinspired metal–organic frameworks (MOFs) with active iron and copper sites have emerged as innovative catalytic platforms capable of facilitating [...] Read more.
The direct oxidation of methane to methanol (MTM) is a significant challenge in catalysis and holds profound economic implications for the modern chemical industry. Bioinspired metal–organic frameworks (MOFs) with active iron and copper sites have emerged as innovative catalytic platforms capable of facilitating MTM conversion under mild conditions. This review discusses the current state of the art in applying MOFs with iron and copper catalytic centers to effectuate the MTM reaction, with a focus on the diverse spectroscopic techniques employed to uncover the electronic and structural properties of MOF catalysts at a microscopic level. We explore the synthetic strategies employed to incorporate iron and copper sites into various MOF topologies and explore the efficiency and selectivity of the MOFs embedded with iron and copper in acting as catalysts, as well as the ensuing MTM reaction mechanisms based on spectroscopic characterizations supported by theory. In particular, we show how integrating complementary spectroscopic tools that probe varying regions of the electromagnetic spectrum can be exceptionally conducive to achieving a comprehensive understanding of the crucial reaction pathways and intermediates. Finally, we provide a critical perspective on future directions to advance the use of MOFs to accomplish the MTM reaction. Full article
(This article belongs to the Special Issue Advances in Catalytic Oxidation of Methane and Carbon Monoxide, 2nd Edition)
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28 pages, 16466 KiB  
Review
Rational Design of the Catalysts for the Direct Conversion of Methane to Methanol Based on a Descriptor Approach
by Zhi Li, Yanjun Chen, Zean Xie, Weiyu Song, Baijun Liu and Zhen Zhao
Catalysts 2023, 13(8), 1226; https://doi.org/10.3390/catal13081226 - 21 Aug 2023
Cited by 1 | Viewed by 2680
Abstract
The direct oxidation of methane to methanol as a liquid fuel and chemical feedstock is arguably the most desirable methane conversion pathway. Currently, constructing and understanding linear scaling relationships between the fundamental physical or chemical properties of catalysts and their catalytic performance to [...] Read more.
The direct oxidation of methane to methanol as a liquid fuel and chemical feedstock is arguably the most desirable methane conversion pathway. Currently, constructing and understanding linear scaling relationships between the fundamental physical or chemical properties of catalysts and their catalytic performance to explore suitable descriptors is crucial for theoretical research on the direct conversion of methane to methanol. In this review, we summarize the energy, electronic, and structural descriptors used to predict catalytic activity. Fundamentally, these descriptors describe the redox properties of active sites from different dimensions. We further explain the moderate principle of descriptors in methane-to-methanol catalyst design and provide related application work. Simultaneously, the underlying activity limitation of methane activation and active species generation is revealed. Based on the selectivity descriptor, the inverse scaling relationship limitation between methane conversion and methanol selectivity is quantitatively understood. Finally, multiscale strategies are proposed to break the limitation and achieve the simultaneous enhancement of activity and selectivity. This descriptor-based review provides theoretical insights and guidance to accelerate the understanding, optimization, and design of efficient catalysts for direct methane-to-methanol conversion. Full article
(This article belongs to the Special Issue Advances in Catalytic Oxidation of Methane and Carbon Monoxide, 2nd Edition)
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25 pages, 3746 KiB  
Review
Methane Oxidation over the Zeolites-Based Catalysts
by Linke Wu, Wei Fan, Xun Wang, Hongxia Lin, Jinxiong Tao, Yuxi Liu, Jiguang Deng, Lin Jing and Hongxing Dai
Catalysts 2023, 13(3), 604; https://doi.org/10.3390/catal13030604 - 16 Mar 2023
Cited by 10 | Viewed by 4940
Abstract
Zeolites have ordered pore structures, good spatial constraints, and superior hydrothermal stability. In addition, the active metal elements inside and outside the zeolite framework provide the porous material with adjustable acid–base property and good redox performance. Thus, zeolites-based catalysts are more and more [...] Read more.
Zeolites have ordered pore structures, good spatial constraints, and superior hydrothermal stability. In addition, the active metal elements inside and outside the zeolite framework provide the porous material with adjustable acid–base property and good redox performance. Thus, zeolites-based catalysts are more and more widely used in chemical industries. Combining the advantages of zeolites and active metal components, the zeolites-based materials are used to catalyze the oxidation of methane to produce various products, such as carbon dioxide, methanol, formaldehyde, formic acid, acetic acid, and etc. This multifunction, high selectivity, and good activity are the key factors that enable the zeolites-based catalysts to be used for methane activation and conversion. In this review article, we briefly introduce and discuss the effect of zeolite materials on the activation of C–H bonds in methane and the reaction mechanisms of complete methane oxidation and selective methane oxidation. Pd/zeolite is used for the complete oxidation of methane to carbon dioxide and water, and Fe- and Cu-zeolite catalysts are used for the partial oxidation of methane to methanol, formaldehyde, formic acid, and etc. The prospects and challenges of zeolite-based catalysts in the future research work and practical applications are also envisioned. We hope that the outcome of this review can stimulate more researchers to develop more effective zeolite-based catalysts for the complete or selective oxidation of methane. Full article
(This article belongs to the Special Issue Advances in Catalytic Oxidation of Methane and Carbon Monoxide, 2nd Edition)
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41 pages, 22568 KiB  
Review
Methane Combustion over the Porous Oxides and Supported Noble Metal Catalysts
by Hongxia Lin, Yuxi Liu, Jiguang Deng, Lin Jing and Hongxing Dai
Catalysts 2023, 13(2), 427; https://doi.org/10.3390/catal13020427 - 16 Feb 2023
Cited by 10 | Viewed by 3173
Abstract
Methane is the most stable hydrocarbon with a regular tetrahedral structure, which can be activated and oxidized above 1000 °C in conventional combustion. Catalytic oxidation is an effective way to eliminate lean methane under mild conditions, and the key issue is to develop [...] Read more.
Methane is the most stable hydrocarbon with a regular tetrahedral structure, which can be activated and oxidized above 1000 °C in conventional combustion. Catalytic oxidation is an effective way to eliminate lean methane under mild conditions, and the key issue is to develop the catalysts with high efficiencies, good stability, and high selectivities. Catalytic combustion of low-concentration methane can realize the light-off and deep conversion at low temperatures, thus achieving complete combustion with fewer byproducts below 500 °C. This review article summarizes the recent advances in preparation of ordered porous oxides and supported noble metal catalysts and their methane combustion applications. The results reveal that the superior performance (good hydrothermal stability and excellent moisture- or sulfur-resistant behavior) is associated with the well-ordered and developed three-dimensional porous structure, large surface area, ultrahigh component dispersion, fast mass transfer, low-temperature reducibility, reactant activation ability, and strong interaction between metal and support. In addition, the development trend of porous oxides for industrial applications in the future is also proposed. Full article
(This article belongs to the Special Issue Advances in Catalytic Oxidation of Methane and Carbon Monoxide, 2nd Edition)
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