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Liu J, Dong F, Huang Y, Fu Y, Lu X, Ma R, Zhang F, Wang S, Zhu W. Ce-doped TiO 2 supported RuO 2 as efficient catalysts for the oxidation of HCl to Cl 2. J Environ Sci (China) 2025; 149:234-241. [PMID: 39181638 DOI: 10.1016/j.jes.2024.01.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 12/07/2023] [Accepted: 01/05/2024] [Indexed: 08/27/2024]
Abstract
Reducing the cost of RuO2/TiO2 catalysts is still one of the urgent challenges in catalytic HCl oxidation. In the present work, a Ce-doped TiO2 supported RuO2 catalyst with a low Ru loading was developed, showing a high activity in the catalytic oxidation of HCl to Cl2. The results on some extensive characterizations of both Ce-doped TiO2 carriers and their supported RuO2 catalysts show that the doping of Ce into TiO2 can effectively change the lattice parameters of TiO2 to improve the dispersion of the active RuO2 species on the carrier, which facilitates the production of surface Ru species to expose more active sites for boosting the catalytic performance even under some harsh reaction conditions. This work provides some scientific basis and technical support for chlorine recycling.
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Affiliation(s)
- Jiahui Liu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Fangyuan Dong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Yaqi Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Yanghe Fu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China.
| | - Xinqing Lu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Rui Ma
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Fumin Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China
| | - Shuhua Wang
- National Engineering Technology Research Center of Fluoro-Materials, Zhejiang Juhua Technology Center Co., Ltd., Quzhou 324004, China
| | - Weidong Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Engineering Laboratory for Green Syntheses and Applications of Fluorine-Containing Specialty Chemicals, Zhejiang Normal University, Jinhua 321004, China.
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2
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Rath T, Deitermann M, Zhao G, Wilma Busser G, Jansen H, Schwiderowski P, Xia W, Muhler M. Photocatalytic Deacon Reaction over SrTiO
3. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202000314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tobias Rath
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Michel Deitermann
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Guixia Zhao
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
- College of Environmental Science and Engineering North China Electric Power University 102206 Beijing P. R. China
| | - G. Wilma Busser
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Henning Jansen
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Philipp Schwiderowski
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Wei Xia
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Martin Muhler
- Laboratory of Industrial Chemistry Ruhr University Bochum Universitätsstraße 150 44801 Bochum Germany
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3
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Tian X, Li Y, Lin B, Wang S, Zhou Y, Zhong H. Improved Cl2 yield and stability of CeO2-MnOx/Al2O3 catalyst for HCl oxidation to Cl2 at higher reaction temperature. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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4
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Yang J, Ding H, Wang J, Yigit N, Xu J, Rupprechter G, Zhang M, Li Z. Energy-Guided Shape Control Towards Highly Active CeO2. Top Catal 2020. [DOI: 10.1007/s11244-020-01357-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Hess F, Smarsly BM, Over H. Catalytic Stability Studies Employing Dedicated Model Catalysts. Acc Chem Res 2020; 53:380-389. [PMID: 31967784 DOI: 10.1021/acs.accounts.9b00467] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Long-term stability of heterogeneous catalysts is an omnipresent and pressing concern in industrial processes. Catalysts with high activity and selectivity can be searched for by high-throughput screening methods based maybe on educated guesses provided by ab initio thermodynamics or scaling relations. However, high-throughput screening is not feasible and is hardly able to identify long-term stable catalyst so that a rational and knowledge-driven approach is called for to identify potentially stable and active catalysts. Unfortunately, our current microscopic understanding on stability issues is quite poor. We propose that this gap in knowledge can be at least partly closed by investigating dedicated model catalyst materials with well-defined morphology that allow for a tight link to theory and the application of standard characterization methods. This topic is highly interdisciplinary, combining sophisticated inorganic synthesis with catalysis research, surface chemistry, and powerful theoretical modeling. In this Account, we focus on the stability issues of Deacon catalysts (RuO2 and CeO2-based materials) for recovering Cl2 from HCl by aerobic oxidation and how to deepen our microscopic insight into the underlying processes. The main stability problems under harsh Deacon reaction conditions concomitant with a substantial loss in activity arise from deep chlorination of the catalyst, leaching of volatile chlorides and oxychlorides, and decrease in active surface area by particle sintering. In general, powder materials with undefined particle shape are not well suited for examining catalyst stability, because changes in the morphology are difficult to recognize, for instance, by electron microscopy. Rather, we focus here on model materials with well-defined starting morphologies, including electrospun nanofibers, shape-controlled nanoparticles, and well-defined ultrathin crystalline layers. CeO2 is able to stabilize shape-controlled particles, exposing a single facet orientation so that comparing activity and stability studies can reveal structure sensitive properties. We develop a quasi-steady-state kinetic approach that allows us to model the catalyst chlorination as a function of temperature and gas feed composition. For the case of pure CeO2 nanocubes, this simple approach predicts chlorination to be efficiently suppressed by addition of little amounts of water in the reaction feed or by keeping the catalyst at higher temperature. Both process parameters have great impact on the actual reactor design. Thermal stabilization of CeO2 by intermixing Zr has been known in automotive exhaust catalysis for decades, but this does not necessarily imply also chemical stabilization of CeO2 against bulk-chlorination since Zr can readily form volatile ZrCl4 and may quickly lose its stabilizing effect. Nevertheless, with model experiments the stabilizing effect of Zr in the Deacon process over mixed CexZr1-xO2 nanorods is clearly evidenced. Even higher stability can be accomplished with ultrathin CeO2 coatings on preformed ZrO2 particles, demonstrating the great promise of atomic layer deposition (ALD) in catalysis synthesis.
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Affiliation(s)
- Franziska Hess
- Physikalisch-Chemisches Institut, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
- Laboratory of Electrochemical Interfaces, Department of Nuclear Science & Engineering, MIT, 77 Massachuetts Avenue, 13-3034, Cambridge, Massachusetts 02139, United States
- Institute of Physical Chemistry, RWTH Aachen, Landoltweg 2, 52074 Aachen, Germany
| | - Bernd M. Smarsly
- Physikalisch-Chemisches Institut, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Herbert Over
- Physikalisch-Chemisches Institut, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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Quan T, Goubard-Bretesché N, Härk E, Kochovski Z, Mei S, Pinna N, Ballauff M, Lu Y. Highly Dispersible Hexagonal Carbon-MoS 2 -Carbon Nanoplates with Hollow Sandwich Structures for Supercapacitors. Chemistry 2019; 25:4757-4766. [PMID: 30698867 DOI: 10.1002/chem.201806060] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/11/2019] [Indexed: 11/10/2022]
Abstract
MoS2 , a typical layered transition-metal dichalcogenide, is promising as an electrode material in supercapacitors. However, its low electrical conductivity could lead to limited capacitance if applied in electrochemical devices. Herein, a new nanostructure composed of hollow carbon-MoS2 -carbon was successfully synthesized through an l-cysteine-assisted hydrothermal method by using gibbsite as a template and polydopamine as a carbon precursor. After calcination and etching of the gibbsite template, uniform hollow platelets, which were made of a sandwich-like assembly of partial graphitic carbon and two-dimensional layered MoS2 flakes, were obtained. The platelets showed excellent dispersibility and stability in water, and good electrical conductivity due to carbon provided by the calcination of polydopamine coatings. The hollow nanoplate morphology of the material provided a high specific surface area of 543 m2 g-1 , a total pore volume of 0.677 cm3 g-1 , and fairly small mesopores (≈5.3 nm). The material was applied in a symmetric supercapacitor and exhibited a specific capacitance of 248 F g-1 (0.12 F cm-2 ) at a constant current density of 0.1 A g-1 ; thus suggesting that hollow carbon-MoS2 -carbon nanoplates are promising candidate materials for supercapacitors.
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Affiliation(s)
- Ting Quan
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | | | - Eneli Härk
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Zdravko Kochovski
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Shilin Mei
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany
| | - Nicola Pinna
- Institut für Chemie, Humboldt-Universität zu Berlin, Brook-Taylor-Str.2, 12489, Berlin, Germany.,IRIS Adlershof, Humboldt-Universität zu Berlin, Zum Großen Windkanal 6, 12489, Berlin, Germany
| | - Matthias Ballauff
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany.,IRIS Adlershof, Humboldt-Universität zu Berlin, Zum Großen Windkanal 6, 12489, Berlin, Germany.,Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489, Berlin, Germany
| | - Yan Lu
- Soft Matter and Functional Materials, Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109, Berlin, Germany.,IRIS Adlershof, Humboldt-Universität zu Berlin, Zum Großen Windkanal 6, 12489, Berlin, Germany.,Institute of Chemistry, University of Potsdam, 14467, Potsdam, Germany
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Sun Y, Li C, Djerdj I, Khalid O, Cop P, Sann J, Weber T, Werner S, Turke K, Guo Y, Smarsly BM, Over H. Oxygen storage capacity versus catalytic activity of ceria–zirconia solid solutions in CO and HCl oxidation. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00222g] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
CexZr1−xO2 solid solutions were prepared to explore the relationship between oxygen storage capacity and activity of oxidation reactions.
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Affiliation(s)
- Yu Sun
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Chenwei Li
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | - Igor Djerdj
- Department of Chemistry
- Josip Juraj Strossmayer University of Osijek
- HR-31000 Osijek
- Croatia
| | - Omeir Khalid
- Physikalisch-Chemisches Institut
- Justus Liebig University
- Germany
| | - Pascal Cop
- Physikalisch-Chemisches Institut
- Justus Liebig University
- Germany
| | - Joachim Sann
- Physikalisch-Chemisches Institut
- Justus Liebig University
- Germany
| | - Tim Weber
- Physikalisch-Chemisches Institut
- Justus Liebig University
- Germany
| | | | - Kevin Turke
- Physikalisch-Chemisches Institut
- Justus Liebig University
- Germany
| | - Yanglong Guo
- Key Laboratory for Advanced Materials
- Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
| | | | - Herbert Over
- Physikalisch-Chemisches Institut
- Justus Liebig University
- Germany
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Pudukudy M, Yaakob Z, Jia Q, Sobri Takriff M. Catalytic decomposition of undiluted methane into hydrogen and carbon nanotubes over Pt promoted Ni/CeO2 catalysts. NEW J CHEM 2018. [DOI: 10.1039/c8nj02842g] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of Pt promoted Ni/CeO2 catalysts were prepared and characterized, and their catalytic activity for methane decomposition was reported.
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Affiliation(s)
- Manoj Pudukudy
- Research Center for Sustainable Process Technology (CESPRO)
- Faculty of Engineering and Built Environment
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
| | - Zahira Yaakob
- Research Center for Sustainable Process Technology (CESPRO)
- Faculty of Engineering and Built Environment
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
| | - Qingming Jia
- Faculty of Chemical Engineering
- Kunming University of Science and Technology
- Kunming 650600
- People's Republic of China
| | - Mohd Sobri Takriff
- Research Center for Sustainable Process Technology (CESPRO)
- Faculty of Engineering and Built Environment
- Universiti Kebangsaan Malaysia
- Bangi
- Malaysia
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