51
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Wang Y, Xie Y, Sun H, Xiao J, Cao H, Wang S. Hierarchical shape-controlled mixed-valence calcium manganites for catalytic ozonation of aqueous phenolic compounds. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01967b] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic ozonation has attracted intensive attention due to its efficient degradation of various organic pollutants in water.
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Affiliation(s)
- Yuxian Wang
- Beijing Engineering Research Center of Process Pollution Control
- Key Laboratory of Green Process and Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
| | - Yongbing Xie
- Beijing Engineering Research Center of Process Pollution Control
- Key Laboratory of Green Process and Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
| | - Hongqi Sun
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
| | - Jiadong Xiao
- Beijing Engineering Research Center of Process Pollution Control
- Key Laboratory of Green Process and Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
| | - Hongbin Cao
- Beijing Engineering Research Center of Process Pollution Control
- Key Laboratory of Green Process and Engineering
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
| | - Shaobin Wang
- Department of Chemical Engineering
- Curtin University
- Perth
- Australia
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52
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Saha S, Abd Hamid SB. Nanosized spinel Cu–Mn mixed oxide catalyst prepared via solvent evaporation for liquid phase oxidation of vanillyl alcohol using air and H2O2. RSC Adv 2016. [DOI: 10.1039/c6ra21221b] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Spinel Cu–Mn mixed oxide preparedviasolvent evaporation method demonstrating superior catalytic activity.
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Affiliation(s)
- Subrata Saha
- Nanotechnology and Catalysis Research Center (NANOCAT)
- University of Malaya
- Kuala Lumpur 50603
- Malaysia
| | - Sharifah Bee Abd Hamid
- Nanotechnology and Catalysis Research Center (NANOCAT)
- University of Malaya
- Kuala Lumpur 50603
- Malaysia
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53
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Huang H, Huang W, Xu Y, Ye X, Wu M, Shao Q, Ou G, Peng Z, Shi J, Chen J, Feng Q, Zan Y, Huang H, Hu P. Catalytic oxidation of gaseous benzene with ozone over zeolite-supported metal oxide nanoparticles at room temperature. Catal Today 2015. [DOI: 10.1016/j.cattod.2015.01.006] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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54
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Huang Y, Dai S, Feng F, Zhang X, Liu Z, Yan K. A comparison study of toluene removal by two-stage DBD-catalyst systems loading with MnO(x), CeMnO(x), and CoMnO(x). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:19240-19250. [PMID: 26253186 DOI: 10.1007/s11356-015-5121-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 07/23/2015] [Indexed: 06/04/2023]
Abstract
This paper studies the toluene removal by a two-stage dielectric barrier discharge (DBD)-catalyst system with three catalysts: MnO(x)/ZSM-5, CoMnO(x)/ZSM-5, and CeMnO(x)/ZSM-5. V-Q Lissajous method, Brunauer-Emmett-Teller (BET) surface area, X-ray diffraction (XRD), and X-ray photoelectron (XPS) are used to characterize the DBD and catalysts. The DBD processing partially oxidizes the toluene, and the removal efficiency has a linear relationship with ozone generation. Three DBD-catalyst systems are compared in terms of their toluene removal efficiency, Fourier transform infrared (FTIR) spectra, carbon balance, CO selectivity, CO2 selectivity, and ozone residual. The results show that the DBD-catalyst system with CoMnO(x)/ZSM-5 performs better than the other two systems. It has the highest removal efficiency of about 93.7%, and the corresponding energy yield is 4.22 g/kWh. The carbon balance and CO2 selectivity of CoMnO(x)/ZSM-5 is also better than the other two catalysts. The measurements of two important byproducts including aerosols and ozone are also presented.
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Affiliation(s)
- Yifan Huang
- Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
- Institute of Industrial Ecology and Environment Research, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Shaolong Dai
- Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
- Institute of Industrial Ecology and Environment Research, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Fada Feng
- School of Chemistry and Environment, Jiaying University, Meizhou, China
| | - Xuming Zhang
- Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
- Institute of Industrial Ecology and Environment Research, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
| | - Zhen Liu
- Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.
- Institute of Industrial Ecology and Environment Research, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China.
| | - Keping Yan
- Key Laboratory of Biomass Chemical Engineering of the Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
- Institute of Industrial Ecology and Environment Research, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, China
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55
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Li Y, Fan Z, Shi J, Liu Z, Zhou J, Shangguan W. Modified manganese oxide octahedral molecular sieves M′-OMS-2 (M′ = Co,Ce,Cu) as catalysts in post plasma-catalysis for acetaldehyde degradation. Catal Today 2015. [DOI: 10.1016/j.cattod.2015.02.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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56
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Shi L, Hu ZH, Deng GM, Li WC. Carbon monoxide oxidation on copper manganese oxides prepared by selective etching with ammonia. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(15)60947-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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57
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Einaga H, Maeda N, Yamamoto S, Teraoka Y. Catalytic properties of copper-manganese mixed oxides supported on SiO2 for benzene oxidation with ozone. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.09.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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58
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Zhu T, Chen R, Xia N, Li X, He X, Zhao W, Carr T. Volatile organic compounds emission control in industrial pollution source using plasma technology coupled with F-TiO2/γ-Al2O3. ENVIRONMENTAL TECHNOLOGY 2015; 36:1405-1413. [PMID: 25428439 DOI: 10.1080/09593330.2014.992479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Volatile organic compounds' (VOCs) effluents, which come from many industries, are triggering serious environmental problems. As an emerging technology, non-thermal plasma (NTP) technology is a potential technology for VOCs emission control. NTP coupled with F-TiO2/γ-Al2O3 is used for toluene removal from a gaseous influent at normal temperature and atmospheric pressure. NTP is generated by dielectric barrier discharge, and F-TiO2/γ-Al2O3 can be prepared by sol-gel method in the laboratory. In the experiment, the different packed materials were packed into the plasma reactor, including γ-Al2O3, TiO2/γ-Al2O3 and F-TiO2/γ-Al2O3. Through a series of characterization methods such as X-ray diffraction, scanning electronic microscopy and Brunner-Emmet-Teller measurements, the results show that the particle size distribution of F-TiO2 is relatively smaller than that of TiO2, and the pore distribution of F-TiO2 is more uniformly distributed than that of TiO2. The relationships among toluene removal efficiency, reactor input energy density, and the equivalent capacitances of air gap and dielectric barrier layer were investigated. The results show that the synergistic technology NTP with F-TiO2/γ-Al2O3 resulted in greater enhancement of toluene removal efficiency and energy efficiency. Especially, when packing with F-TiO2/γ-Al2O3 in NTP reactor, toluene removal efficiency reaches 99% and higher. Based on the data analysis of Fourier Transform Infrared Spectroscopy, the experimental results showed that NTP reactor packed with F-TiO2/γ-Al2O3 resulted in a better inhibition for by-products formation effectively in the gas exhaust.
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Affiliation(s)
- Tao Zhu
- a School of Chemical & Environmental Engineering , China University of Mining & Technology (Beijing) , Beijing 100083 , People's Republic of China
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59
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Einaga H, Yamamoto S, Maeda N, Teraoka Y. Structural analysis of manganese oxides supported on SiO2 for benzene oxidation with ozone. Catal Today 2015. [DOI: 10.1016/j.cattod.2014.05.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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60
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Elhamifar D, Nazari E. Preparation of Iron-Containing Schiff Base and Ionic Liquid Based Bifunctional Periodic Mesoporous Organosilica and Its Application in the Synthesis of 3,4-Dihydropyrimidinones. Chempluschem 2015; 80:820-826. [DOI: 10.1002/cplu.201402415] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Indexed: 11/09/2022]
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61
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Einaga H, Maeda N, Nagai Y. Comparison of catalytic properties of supported metal oxides for benzene oxidation using ozone. Catal Sci Technol 2015. [DOI: 10.1039/c5cy00315f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The oxidation behavior of intermediate compounds is the key factor for controlling the catalytic activities.
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Affiliation(s)
- Hisahiro Einaga
- Department of Energy and Material Sciences
- Faculty of Engineering Sciences
- Kyushu University
- Kasuga
- Japan
| | - Nanako Maeda
- Department of Energy and Material Sciences
- Faculty of Engineering Sciences
- Kyushu University
- Kasuga
- Japan
| | - Yusuke Nagai
- Department of Energy and Material Sciences
- Faculty of Engineering Sciences
- Kyushu University
- Kasuga
- Japan
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62
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Liu Y, Li X, Liu J, Shi C, Zhu A. Ozone catalytic oxidation of benzene over AgMn/HZSM-5 catalysts at room temperature: Effects of Mn loading and water content. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(14)60070-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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63
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Efficient aerobic oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran on manganese oxide catalysts. J Catal 2014. [DOI: 10.1016/j.jcat.2014.05.003] [Citation(s) in RCA: 120] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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64
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Bleta R, Machut C, Léger B, Monflier E, Ponchel A. Investigating the effect of randomly methylated β-cyclodextrin/block copolymer molar ratio on the template-directed preparation of mesoporous alumina with tailored porosity. J INCL PHENOM MACRO 2014. [DOI: 10.1007/s10847-014-0405-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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65
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Einaga H, Teraoka Y, Ogata A. Catalytic oxidation of benzene by ozone over manganese oxides supported on USY zeolite. J Catal 2013. [DOI: 10.1016/j.jcat.2013.05.016] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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66
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Nie Y, Hu C, Yang L, Hu J. Inhibition mechanism of BrO3- formation over MnOx/Al2O3 during the catalytic ozonation of 2,4-dichlorophenoxyacetic acid in water. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2013.03.045] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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67
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Bleta R, Machut C, Léger B, Monflier É, Ponchel A. Coassembly of Block Copolymer and Randomly Methylated β-Cyclodextrin: From Swollen Micelles to Mesoporous Alumina with Tunable Pore Size. Macromolecules 2013. [DOI: 10.1021/ma4008303] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Rudina Bleta
- Université Lille Nord de France, F-59000 Lille, France
- UCCS, Faculté des Sciences
Jean Perrin, Université d'Artois, Rue Jean Souvraz, SP 18, F-62307 Lens, France
- CNRS, UMR 8181, F-59650
Villeneuve d’Ascq, France
| | - Cécile Machut
- Université Lille Nord de France, F-59000 Lille, France
- UCCS, Faculté des Sciences
Jean Perrin, Université d'Artois, Rue Jean Souvraz, SP 18, F-62307 Lens, France
- CNRS, UMR 8181, F-59650
Villeneuve d’Ascq, France
| | - Bastien Léger
- Université Lille Nord de France, F-59000 Lille, France
- UCCS, Faculté des Sciences
Jean Perrin, Université d'Artois, Rue Jean Souvraz, SP 18, F-62307 Lens, France
- CNRS, UMR 8181, F-59650
Villeneuve d’Ascq, France
| | - Éric Monflier
- Université Lille Nord de France, F-59000 Lille, France
- UCCS, Faculté des Sciences
Jean Perrin, Université d'Artois, Rue Jean Souvraz, SP 18, F-62307 Lens, France
- CNRS, UMR 8181, F-59650
Villeneuve d’Ascq, France
| | - Anne Ponchel
- Université Lille Nord de France, F-59000 Lille, France
- UCCS, Faculté des Sciences
Jean Perrin, Université d'Artois, Rue Jean Souvraz, SP 18, F-62307 Lens, France
- CNRS, UMR 8181, F-59650
Villeneuve d’Ascq, France
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68
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Sui M, Xing S, Sheng L, Huang S, Guo H. Heterogeneous catalytic ozonation of ciprofloxacin in water with carbon nanotube supported manganese oxides as catalyst. JOURNAL OF HAZARDOUS MATERIALS 2012; 227-228:227-236. [PMID: 22658829 DOI: 10.1016/j.jhazmat.2012.05.039] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Revised: 04/23/2012] [Accepted: 05/10/2012] [Indexed: 06/01/2023]
Abstract
Carbon nanotube-supported manganese oxides (MnOx/MWCNT) were used as catalysts to assist ozone in degrading ciprofloxacin in water. Manganese oxides were successfully loaded on multi-walled carbon nanotube surfaces by simply impregnating the carbon nanotube with permanganate solution. The catalytic activities of MnOx/MWCNT in ciprofloxacin ozonation, including degradation, mineralization effectiveness, and antibacterial activity change, were investigated. The presence of MnOx/MWCNT significantly elevated the degradation and mineralization efficiency of ozone on ciprofloxacin. The microbiological assay with a reference Escherichia coli strain indicated that ozonation with MnOx/MWCNT results in more effective antibacterial activity inhibition of ciprofloxacin than that in ozonation alone. The effects of catalyst dose, initial ciprofloxacin concentration, and initial pH conditions on ciprofloxacin ozonation with MnOx/MWCNT were surveyed. Electron spin resonance trapping was applied to assess the role of MnOx/MWCNT in generating hydroxyl radicals (HO) during ozonation. Stronger 5,5-dimethyl-1-pyrroline-N-oxide-OH signals were observed in the ozonation with MnOx/MWCNT compared with those in ozonation alone, indicating that MnOx/MWCNT promoted the generation of hydroxyl radicals. The degradation of ciprofloxacin was studied in drinking water and wastewater process samples to gauge the potential effects of water background matrix on MnOx/MWCNT catalytic ozonation.
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Affiliation(s)
- Minghao Sui
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, People's Republic of China.
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69
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Sultana A, Sasaki M, Hamada H. Influence of support on the activity of Mn supported catalysts for SCR of NO with ammonia. Catal Today 2012. [DOI: 10.1016/j.cattod.2011.09.018] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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70
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An efficient route to aqueous phase synthesis of nanocrystalline γ-Al2O3 with high porosity: From stable boehmite colloids to large pore mesoporous alumina. J Colloid Interface Sci 2012; 367:120-8. [DOI: 10.1016/j.jcis.2011.08.087] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 08/01/2011] [Accepted: 08/02/2011] [Indexed: 11/19/2022]
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71
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Park JH, Kim JM, Jin M, Jeon JK, Kim SS, Park SH, Kim SC, Park YK. Catalytic ozone oxidation of benzene at low temperature over MnOx/Al-SBA-16 catalyst. NANOSCALE RESEARCH LETTERS 2012; 7:14. [PMID: 22221406 PMCID: PMC3269362 DOI: 10.1186/1556-276x-7-14] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2011] [Accepted: 01/05/2012] [Indexed: 05/24/2023]
Abstract
The low-temperature catalytic ozone oxidation of benzene was investigated. In this study, Al-SBA-16 (Si/Al = 20) that has a three-dimensional cubic Im3m structure and a high specific surface area was used for catalytic ozone oxidation for the first time. Two different Mn precursors, i.e., Mn acetate and Mn nitrate, were used to synthesize Mn-impregnated Al-SBA-16 catalysts. The characteristics of these two catalysts were investigated by instrumental analyses using the Brunauer-Emmett-Teller method, X-ray diffraction, X-ray photoelectron spectroscopy, and temperature-programmed reduction. A higher catalytic activity was exhibited when Mn acetate was used as the Mn precursor, which is attributed to high Mn dispersion and a high degree of reduction of Mn oxides formed by Mn acetate than those formed by Mn nitrate.
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Affiliation(s)
- Jong Hwa Park
- Graduate School of Energy and Environmental System Engineering, University of Seoul, Seoul 130-743, South Korea
| | - Ji Man Kim
- Department of Chemistry, BK21 School of Chemical Materials Science and Department of Energy Science, Sungkyunkwan University, Suwon 440-746, South Korea
| | - Mingshi Jin
- Department of Chemistry, BK21 School of Chemical Materials Science and Department of Energy Science, Sungkyunkwan University, Suwon 440-746, South Korea
| | - Jong-Ki Jeon
- Department of Chemical Engineering, Kongju National University, Cheonan 330-717, South Korea
| | - Seung-Soo Kim
- Department of Chemical Engineering, Kangwon National University, Samcheok 245-711, South Korea
| | - Sung Hoon Park
- Department of Environmental Engineering, Sunchon National University, Suncheon 540-742, South Korea
| | - Sang Chai Kim
- Department of Environmental Education, Mokpo National University, Muan 534-729, South Korea
| | - Young-Kwon Park
- Graduate School of Energy and Environmental System Engineering, University of Seoul, Seoul 130-743, South Korea
- School of Environmental Engineering, University of Seoul, Seoul 130-743, South Korea
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72
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Dang X, Huang J, Kang L, Wu T, Zhang Q. Research on Decomposition of Hydrogen Sulfide Using Nonthermal Plasma with Metal Oxide Catalysis. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.egypro.2012.01.137] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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73
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Einaga H, Teraoka Y, Ogat A. Benzene oxidation with ozone over manganese oxide supported on zeolite catalysts. Catal Today 2011. [DOI: 10.1016/j.cattod.2010.10.067] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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74
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LONG L, ZHAO J, YANG L, FU M, WU J, HUANG B, YE D. Room Temperature Catalytic Ozonation of Toluene over MnO2/Al2O3. CHINESE JOURNAL OF CATALYSIS 2011. [DOI: 10.1016/s1872-2067(10)60216-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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75
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Maliyekkal SM, Lisha KP, Pradeep T. A novel cellulose-manganese oxide hybrid material by in situ soft chemical synthesis and its application for the removal of Pb(II) from water. JOURNAL OF HAZARDOUS MATERIALS 2010; 181:986-995. [PMID: 20638968 DOI: 10.1016/j.jhazmat.2010.05.112] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Revised: 05/17/2010] [Accepted: 05/21/2010] [Indexed: 05/29/2023]
Abstract
We report an in situ soft chemical synthesis of a novel hybrid material, cellulose-nanoscale-manganese oxide composite (C-NMOC), and its application for Pb(II) removal from aqueous solutions. For comparison, detailed Pb(II) adsorption studies were also performed with nanoscale-manganese oxide powder (NMO), prepared through a similar route. Various spectroscopic and microscopic techniques were used to characterize the as-synthesized materials. X-ray photoelectron spectroscopic (XPS) measurements confirmed the existence of Mn(IV) phase in NMO whereas C-NMOC showed largely the Mn(III) phase. The existence and uniform distribution of manganese oxide in cellulose fiber materials was confirmed by SEM and EDAX analyses. The adsorption studies reveal that the Pb(II) uptake onto C-NMOC is a fast process and >90% of the uptake occurred within the first 10 min contact time. The Sips isotherm predicted the equilibrium data well and the maximum Pb(II) uptake capacity of C-NMOC (4.64% Mn loading) was estimated to be 80.1 mg g(-1). The Pb(II) adsorption capacity of C-NMOC (per gram of Mn present) was several times higher than commercial manganese oxide (beta-MnO2) and at least twice larger than NMO. The experimental evidence reveals that physisorption plays a dominant role in Pb(II) adsorption by both NMO and C-NMOC.
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Affiliation(s)
- Shihabudheen M Maliyekkal
- Department of Chemistry and Sophisticated Analytical Instrument Facility, Indian Institute of Technology Madras, Chennai, India
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76
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Corneal LM, Masten SJ, Davies SH, Tarabara VV, Byun S, Baumann MJ. AFM, SEM and EDS characterization of manganese oxide coated ceramic water filtration membranes. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.05.026] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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77
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Einaga H, Ogata A. Catalytic oxidation of benzene in the gas phase over alumina-supported silver catalysts. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:2612-2617. [PMID: 20222728 DOI: 10.1021/es903095j] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Catalytic properties of Ag/Al(2)O(3) for complete oxidation of benzene with ozone at 295-373 K were studied and compared with those of Mn/Al(2)O(3). At the reaction temperature of 295 K, the Ag/Al(2)O(3) catalysts showed selectivity to CO(x) (ca. 80%) higher than that of the oxide of metals in the first transition series (Fe, Mn, Co, Ni, Cu) supported on Al(2)O(3), which had selectivities of 28-62%. The catalyst showed gradual deactivation from accumulation of byproduct compounds on the catalyst surface. FTIR studies revealed that the byproduct compounds consisted of easily decomposable species and hardly decomposable species. The rate for benzene oxidation linearly increased with Ag loadings (approximately 15 wt %) and was not improved at higher loading levels. The ratios of ozone decomposition to benzene oxidation and ozone decomposition to CO(x) selectivity were evaluated to be 7.5 and 80%, respectively, and they were independent of benzene conversion. The Ag/Al(2)O(3) catalyst showed steady-state activities at a reaction temperature of 313-373 K, and the conversion increased with the increase in the reaction temperature. The presence of water vapor in the reaction gas inhibited the catalyst deactivation, and steady-state activity was obtained at a reaction temperature of 295 K, while it did not affect the activities for benzene oxidation but improved the CO(2) selectivity.
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Affiliation(s)
- Hisahiro Einaga
- Faculty of Engineering Sciences, Kyushu University, Kasuga, Fukuoka, Japan.
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78
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Insights into the nature of alumina-supported MnOOH and its catalytic performance in the aerobic oxidation of benzyl alcohol. CATAL COMMUN 2009. [DOI: 10.1016/j.catcom.2009.01.011] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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79
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Einaga H, Harada M, Ogata A. Relationship Between the Structure of Manganese Oxides on Alumina and Catalytic Activities for Benzene Oxidation with Ozone. Catal Letters 2009. [DOI: 10.1007/s10562-008-9814-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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80
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Influence of the Support Treatment on the Behavior of MnOx/Al2O3 Catalysts used in VOC Combustion. Catal Letters 2008. [DOI: 10.1007/s10562-008-9695-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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81
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82
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Combustion of volatile organic compounds over supported manganese oxide: Influence of the support, the precursor and the manganese loading. Catal Today 2008. [DOI: 10.1016/j.cattod.2007.11.044] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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83
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Einaga H, Futamura S. Catalytic oxidation of benzene with ozone over Mn ion-exchanged zeolites. CATAL COMMUN 2007. [DOI: 10.1016/j.catcom.2006.07.024] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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84
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A novel synthesis of manganese oxide nanotubes. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/s0167-2991(07)80324-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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85
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Xi Y, Reed C, Lee YK, Oyama ST. Acetone Oxidation Using Ozone on Manganese Oxide Catalysts. J Phys Chem B 2005; 109:17587-96. [PMID: 16853250 DOI: 10.1021/jp052930g] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Supported manganese oxide catalysts were prepared by the impregnation of alumina foam blocks washcoated with alumina and silica. The manganese content based on the weight of the washcoats was 10 wt % calculated as MnO2. Fourier transform profiles of the Mn K-edge EXAFS spectra for these samples gave three distinctive peaks at 0.15, 0.25, and 0.32 nm and were close to the profiles of Mn3O4 and beta-MnO2. The number of surface active sites was determined through oxygen chemisorption measurements at a reduction temperature (Tred = 443 K) obtained from temperature-programmed reduction (TPR) experiments. Acetone catalytic oxidation was studied from room temperature to 573 K, and was found to be highly accelerated by the use of ozone on both catalysts with substantial reductions in the reaction temperature. The only carbon-containing product detected was CO2. The alumina-supported catalyst was found to be more active than the silica-supported catalyst in acetone and ozone conversion, with higher turnover frequencies (TOFs) for both reactions. The pressure drop through the foam was low and increased little (0.003 kPa/10 000 h(-1)) with space velocity. In situ steady-state Raman spectroscopy measurements during the acetone catalytic oxidation reaction showed the presence of an adsorbed acetone species with a C-H bond at 2930 cm(-1) and a peroxide species derived from ozone with an O-O bond at 890 cm(-1).
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Affiliation(s)
- Yan Xi
- Environmental Catalysis and Nanomaterials Laboratory, Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA
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86
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87
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Escax V, Impéror-Clerc M, Bazin D, Davidson A. Nanocasting, templated syntheses and structural studies of manganese oxide nanoparticles nucleated in the pores of ordered mesoporous silicas (SBA-15). CR CHIM 2005. [DOI: 10.1016/j.crci.2004.10.021] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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88
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Villegas JC, Giraldo OH, Laubernds K, Suib SL. New layered double hydroxides containing intercalated manganese oxide species: synthesis and characterization. Inorg Chem 2003; 42:5621-31. [PMID: 12950210 DOI: 10.1021/ic030054k] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Manganese oxide species (MnO(x)) have been intercalated within the gallery spaces of Mg-Al layered double hydroxides (LDHs). Synthesis of these materials was achieved by ion-exchange of the LDH-nitrate precursor with permanganate anion followed by reduction with organic reagents, such as glucose, ethanol, and ascorbic acid. Elemental analysis, X-ray diffraction, FT-IR spectroscopy, Raman spectroscopy, HR-TEM, and N(2) sorption analyses have been used to characterize these materials. TEM micrographs of LDH-MnO(x) materials revealed platelike morphology, characteristic of hydrotalcite-like compounds. Chemical analysis results showed that permanganate anions exchanged with nitrate anions. FT-IR and Raman spectroscopy confirmed the reduction of the permanganate anions after treatment with the organic reagents. The XRD diffraction patterns of LDH-MnO(x) revealed that the layer structure is maintained after all synthetic steps. The observed basal spacings of intercalates varied depending on the reducing agent; the largest expansion was 9.93A, corresponding to the use of ascorbic acid. The specific surface areas were also affected according to the organic reagent used, indicating that the structural modifications in the interlayer domain observed by X-ray diffraction also influence the microtextural properties.
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Affiliation(s)
- Josanlet C Villegas
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, USA
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89
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Chen A, Xu H, Yue Y, Hua W, Shen W, Gao Z. Support effect in hydrogenation of methyl benzoate over supported manganese oxide catalysts. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s1381-1169(03)00380-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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90
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Radhakrishnan R, Oyama ST, Ohminami Y, Asakura K. Structure of MnOx/Al2O3 Catalyst: A Study Using EXAFS, In Situ Laser Raman Spectroscopy and ab Initio Calculations. J Phys Chem B 2001. [DOI: 10.1021/jp004480s] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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