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Dong N, Chen M, Ye Q, Zhang D, Dai H. Promotional effect of cobalt doping on catalytic performance of cryptomelane-type manganese oxide in toluene oxidation. J Environ Sci (China) 2023; 126:263-274. [PMID: 36503754 DOI: 10.1016/j.jes.2022.03.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/17/2022] [Accepted: 03/14/2022] [Indexed: 06/17/2023]
Abstract
The cryptomelane-type manganese oxide (OMS-2)-supported Co (xCo/OMS-2; x = 5, 10, and 15 wt.%) catalysts were prepared via a pre-incorporation route. The as-prepared materials were used as catalysts for catalytic oxidation of toluene (2000 ppmV). Physical and chemical properties of the catalysts were measured using the X-ray diffraction (XRD), Fourier transform infrared spectroscopic (FT-IR), scanning electron microscopic (SEM), X-ray photoelectron spectroscopy (XPS), and hydrogen temperature-programmed reduction (H2-TPR) techniques. Among all of the catalysts, 10Co/OMS-2 performed the best, with the T90%, specific reaction rate at 245°C, and turnover frequency at 245°C (TOFCo) being 245°C, 1.23 × 10-3 moltoluene/(gcat·sec), and 11.58 × 10-3 sec-1 for toluene oxidation at a space velocity of 60,000 mL/(g·hr), respectively. The excellent catalytic performance of 10Co/OMS-2 were due to more oxygen vacancies, enhanced redox ability and oxygen mobility, and strong synergistic effect between Co species and OMS-2 support. Moreover, in the presence of poisoning gases CO2, SO2 or NH3, the activity of 10Co/OMS-2 decreased for the carbonate, sulfate and ammonia species covered the active sites and oxygen vacancies, respectively. After the activation treatment, the catalytic activity was partly recovered. The good low-temperature reducibility of 10Co/OMS-2 could also facilitate the redox process accompanied by the consecutive electron transfer between the adsorbed O2 and the cobalt or manganese ions. In the oxidation process of toluene, the benzoic and aldehydic intermediates were first generated, which were further oxidized to the benzoate intermediate that were eventually converted into H2O and CO2.
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Affiliation(s)
- Ning Dong
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Mengyue Chen
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China; R&D Department of Atmospheric Prevention and Control Technology, Guangdong Suncere Technology Co., Ltd., Guangzhou 510220, China
| | - Qing Ye
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
| | - Dan Zhang
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Hongxing Dai
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, and Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
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Dong N, Chen M, Ye Q, Zhang D, Dai H. An investigation on catalytic performance and reaction mechanisms of Fe/OMS-2 for the oxidation of carbon monoxide, ethyl acetate, and toluene. J Environ Sci (China) 2022; 112:258-268. [PMID: 34955210 DOI: 10.1016/j.jes.2021.05.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 05/08/2021] [Accepted: 05/08/2021] [Indexed: 06/14/2023]
Abstract
The octahedral molecular sieve (OMS-2)-supported Fe (xFe/OMS-2: x = 1, 3, 5, and 10) catalysts were prepared using the pre-incorporation method. Physicochemical properties of the as-synthesized materials were characterized by means of various techniques, and their catalytic activities for CO, ethyl acetate, and toluene oxidation were evaluated. Among all of the samples, performed the best, with the reaction temperature required to achieve 90% conversion (T90%) being 160°C for CO oxidation, 210°C for ethyl acetate oxidation, and 285°C for toluene oxidation. Such a good catalytic performance of 5Fe/OMS-2 was associated with its high (Mn3+ + Mn2+) content and adsorbed oxygen species concentration, and good low-temperature reducibility and lattice oxygen mobility as well as strong interaction between Fe and OMS-2. In addition, catalytic mechanisms of the oxidation of three pollutants over the 5Fe/OMS-2 catalyst were also studied. It was found that CO, ethyl acetate or toluene was first adsorbed, then the related intermediates were formed, and finally the formed intermediates were completely converted into CO2 and H2O.
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Affiliation(s)
- Ning Dong
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Mengyue Chen
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Qing Ye
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
| | - Dan Zhang
- Key Laboratory of Beijing on Regional Air Pollution Control, Department of Environmental Science, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China
| | - Hongxing Dai
- Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Beijing on Regional Air Pollution Control, Key Laboratory of Advanced Functional Materials, Education Ministry of China, and Laboratory of Catalysis Chemistry and Nanoscience, Department of Environmental Chemical Engineering, School of Environmental and Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
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Gürbüz MU, Elmacı G, Zhang Y, Meng X, Ertürk AS. Cryptomelane nanorods coated with Ni ion doped Birnessite polymorphs as bifunctional efficient catalyst for the oxygen evolution reaction and degradation of organic contaminants. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6432] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mustafa Ulvi Gürbüz
- Department of Chemistry, Faculty of Arts and Sciences Yıldız Technical University Istanbul Turkey
| | - Gökhan Elmacı
- Department of Chemistry School of Technical Sciences, Adıyaman University Adıyaman Turkey
| | - Yajun Zhang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou China
| | - Xu Meng
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou China
| | - Ali Serol Ertürk
- Department of Analytical Chemistry, Faculty of Pharmacy Adıyaman University Adıyaman Turkey
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An J, Hu C, Wang Y, Jin Y, Zhang J, Yuan S, Wang P. Preparation of Activated Carbon Fibers‐α‐FeOOH as a High‐performance Heterogeneous Fenton‐like Catalyst for Efficient Removal of Hydrotropic Lignin Model Compound. ChemistrySelect 2021. [DOI: 10.1002/slct.202100394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Junjian An
- Hubei Key Laboratory of Green Materials for Light Industry School of Materials science and Chemical Engineering Hubei University of Technology Wuhan 430068 P.R.China
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control College of Light Industry and Food Engineering Guangxi University Nanning 530004 P.R.China
| | - Chenyan Hu
- Hubei Key Laboratory of Green Materials for Light Industry School of Materials science and Chemical Engineering Hubei University of Technology Wuhan 430068 P.R.China
| | - Yin Wang
- Hubei Key Laboratory of Green Materials for Light Industry School of Materials science and Chemical Engineering Hubei University of Technology Wuhan 430068 P.R.China
| | - Yi Jin
- Hubei Key Laboratory of Green Materials for Light Industry School of Materials science and Chemical Engineering Hubei University of Technology Wuhan 430068 P.R.China
| | - Jian Zhang
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control College of Light Industry and Food Engineering Guangxi University Nanning 530004 P.R.China
| | - Shiju Yuan
- Hubei Key Laboratory of Green Materials for Light Industry School of Materials science and Chemical Engineering Hubei University of Technology Wuhan 430068 P.R.China
| | - Peng Wang
- Hubei Key Laboratory of Green Materials for Light Industry School of Materials science and Chemical Engineering Hubei University of Technology Wuhan 430068 P.R.China
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