1
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Gai Y, Yao P, Li S, Zhang H, Wu Y, Jiao Y, Chen Y, Wang J. Real biofuel and fossil-fuel soot combustion activities in active and passive regeneration of diesel/gasoline particulate filters under different O 2/NO x concentrations. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:45718-45733. [PMID: 38976192 DOI: 10.1007/s11356-024-34208-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 06/28/2024] [Indexed: 07/09/2024]
Abstract
In this work, we aim to investigate and compare the combustion reactivities of real biofuel soot and fossil-fuel soot in the active and passive regeneration conditions of DPF and GPF through temperature-programmed oxidation (TPO). Higher reactivity of biofuel soot is achieved even under GPF conditions with extremely low oxygen concentration (~ 1%), which provides a great potential for low-temperature regeneration of GPF. Such a result is mainly attributed to the low graphitization and less surface C = C groups of biofuel soot. Unfortunately, the presence of high-content ashes (~ 47%) and P impurity in real biofuel soot hinder its combustion reactivity. TPO evidences that the O2/NOX-lacking conditions in GPF are key factors to impact the combustion of soot, especially fossil-fuel soot. This work provides some useful information for understanding real biofuel and fossil-fuel soot combustion in GPF and DPF regeneration and further improvement in filter regeneration process.
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Affiliation(s)
- Yetong Gai
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Peng Yao
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu, 610064, Sichuan, China
| | - Shanshan Li
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Hailong Zhang
- College of Carbon Neutrality Future Technology, Sichuan University, Chengdu, 610064, China
| | - Yang Wu
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu, 610064, Sichuan, China
| | - Yi Jiao
- Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu, 610064, Sichuan, China
| | - Yaoqiang Chen
- College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Jianli Wang
- College of Chemistry, Sichuan University, Chengdu, 610064, China.
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2
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Feng S, Li Z, Shen B, Yuan P, Ma J, Wang Z, Kong W. An overview of the deactivation mechanism and modification methods of the SCR catalysts for denitration from marine engine exhaust. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115457. [PMID: 35751261 DOI: 10.1016/j.jenvman.2022.115457] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 11/27/2021] [Accepted: 05/28/2022] [Indexed: 06/15/2023]
Abstract
Selective catalytic reduction (SCR) technology is currently the most effective deNOx technology and has broad application prospects. Moreover, there is a large NOx content in marine engine exhaust. However, the marine engine SCR catalyst will be affected by heavy metals, SO2, H2O(g), hydrocarbons (HC) and particulate matter (PM) in the exhaust, which will hinder the removal of NOx via SCR. Furthermore, due to the high loading operation of the marine engine and the regeneration of the diesel particulate filter (DPF), the exhaust temperature of the engine may exceed 600 °C, which leads to sintering of the SCR catalysts. Therefore, the development of new catalysts with good tolerances to the above emissions and process parameters is of great significance for further reducing NOx from marine engines. In this work, we first elaborate on the mechanism of the SCR catalyst poisoning caused by marine engine emissions, as well as the working mechanism of SCR catalysts affected by the engine exhaust temperature. Second, we also summarize the current technologies for improving the properties of SCR catalysts with the aim of enhancing the resistance and stability under complex working conditions. Finally, the challenges and perspectives associated with the performance optimization and technology popularization of marine SCR systems are discussed and proposed further. Consequently, this review may provide a valuable reference and inspiration for the development of catalysts and improvement in the denitration ability of SCR systems matched with marine engines.
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Affiliation(s)
- Shuo Feng
- School of Energy and Environmental Engineering, Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, 300401, China
| | - Zhaoming Li
- School of Energy and Environmental Engineering, Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, 300401, China
| | - Boxiong Shen
- School of Energy and Environmental Engineering, Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, 300401, China.
| | - Peng Yuan
- School of Energy and Environmental Engineering, Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, 300401, China; School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China.
| | - Jiao Ma
- School of Energy and Environmental Engineering, Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, 300401, China
| | - Zhuozhi Wang
- School of Energy and Environmental Engineering, Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, 300401, China
| | - Wenwen Kong
- School of Energy and Environmental Engineering, Tianjin Key Laboratory of Clean Energy and Pollution Control, Hebei University of Technology, Tianjin, 300401, China
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3
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Isotopic study of the influence of oxygen interaction and surface species over different catalysts on the soot removal mechanism. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.07.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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4
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Feng X, Zhang S, Wang F, Ma J, Xu X, Lai Q, Xu J, Fang X, Wang X. Metallic Ag Confined on SnO
2
Surface for Soot Combustion: the Influence of Ag Distribution and Dispersion on the Reactivity. ChemCatChem 2021. [DOI: 10.1002/cctc.202100041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaohui Feng
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Shijing Zhang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Fumin Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Jun Ma
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Xianglan Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Qiang Lai
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Junwei Xu
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Xiuzhong Fang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
| | - Xiang Wang
- Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of Chemistry Nanchang University Xuefu Avenue, Honggutan New District Nanchang P.R. China
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5
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Feng X, Liu R, Xu X, Tong Y, Zhang S, He J, Xu J, Fang X, Wang X. Stable CuO/La2Sn2O7 catalysts for soot combustion: Study on the monolayer dispersion behavior of CuO over a La2Sn2O7 pyrochlore support. CHINESE JOURNAL OF CATALYSIS 2021. [DOI: 10.1016/s1872-2067(20)63657-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Nitrogen Monoxide and Soot Oxidation in Diesel Emissions with Platinum–Tungsten/Titanium Dioxide Catalysts: Tungsten Loading Effect. Catalysts 2020. [DOI: 10.3390/catal10111283] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Compared with Pt/TiO2, tungsten-loaded Pt–W/TiO2 catalysts exhibit improved activity for NO and soot oxidation. Using catalysts prepared by an incipient wetness method, the tungsten loading effect was investigated using Brunauer–Emmett–Teller surface areas, X-ray diffraction, transmission electron microscopy (TEM), CO pulse chemisorption, H2 temperature-programmed reduction, NH3 temperature-programmed desorption (NH3-TPD), and pyridine Fourier transform infrared (FT-IR) spectroscopy. Loading tungsten on the Pt/TiO2 catalyst reduced the platinum particle size, as revealed in TEM images. CO pulse chemisorption showed that platinum was covered with tungsten and the dispersion of platinum decreased when 5 wt.% or more of tungsten was loaded. The NH3-TPD and pyridine-FT-IR results demonstrated that the number of strong acid sites and Brønsted acid sites in the catalyst were increased by the presence of tungsten. Therefore, a catalyst containing an appropriate amount of tungsten increased the dispersion of platinum, thereby increasing the number of active sites for NO and soot oxidation, and increased the acidity of the catalyst, thereby increasing the activity of soot oxidation by NO2
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7
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Davies CJ, Mayer A, Gabb J, Walls JM, Degirmenci V, Thompson PBJ, Cibin G, Golunski S, Kondrat SA. Operando potassium K-edge X-ray absorption spectroscopy: investigating potassium catalysts during soot oxidation. Phys Chem Chem Phys 2020; 22:18976-18988. [PMID: 32648863 DOI: 10.1039/d0cp01227k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chemical and structural nature of potassium compounds involved in catalytic soot oxidation have been studied by a combination of temperature programmed oxidation and operando potassium K-edge X-ray absorption spectroscopy experiments. These experiments are the first known operando studies using tender X-rays (∼3.6 keV) under high temperature oxidation reaction conditions. X-ray absorption near edge structure analysis of K2CO3/Al2O3 catalysts during heating shows that, at temperatures between 100 and 200 °C, potassium species undergo a structural change from an initial hydrated K2CO3·xH2O and KHCO3 mixture to well-defined K2CO3. As the catalyst is heated from 200 °C to 600 °C, a feature associated with multiple scattering shifts to lower energy, indicating increased K2CO3 dispersion, due to its mobility at high reaction temperature. This shift was noted to be greater in samples containing soot than in control experiments without soot and can be attributed to enhanced mobility of the K2CO3, due to the interaction between soot and potassium species. No potassium species except K2CO3 could be defined during reactions, which excludes a potential reaction mechanism in which carbonate ions are the active soot-oxidising species. Simulations of K-edge absorption near edge structures were performed to rationalise the observed changes seen. Findings showed that cluster size, unit cell distortions and variation in the distribution of potassium crystallographic sites influenced the simulated spectra of K2CO3. While further simulation studies are required for a more complete understanding, the current results support the hypothesis that changes in the local structure on dispersion can influence the observed spectra. Ex situ characterisation was carried out on the fresh and used catalyst, by X-ray diffraction and X-ray photoelectron spectroscopy, which indicated changes to the carbonate species, in line with the X-ray absorption spectroscopy experiments.
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Affiliation(s)
- Catherine J Davies
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Alexander Mayer
- Department of Chemistry, Loughborough University, Loughborough, Leicestershire LE113TU, UK.
| | - Jess Gabb
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Jake M Walls
- Department of Chemistry, Loughborough University, Loughborough, Leicestershire LE113TU, UK.
| | - Volkan Degirmenci
- The School of Engineering, University of Warwick, Coventry, CV4 7AL, UK
| | - Paul B J Thompson
- XMaS, UK CRG, ESRF, 71 Avenue des Martyrs, 38043 Grenoble, France and Department of Physics, University of Liverpool, Oliver Lodge Laboratory, Liverpool L69 7ZE, UK
| | - Giannantonio Cibin
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK
| | - Stan Golunski
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT, UK
| | - Simon A Kondrat
- Department of Chemistry, Loughborough University, Loughborough, Leicestershire LE113TU, UK.
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8
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Castoldi L. An Overview on the Catalytic Materials Proposed for the Simultaneous Removal of NO x and Soot. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3551. [PMID: 32806621 PMCID: PMC7475819 DOI: 10.3390/ma13163551] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/03/2020] [Accepted: 08/07/2020] [Indexed: 12/14/2022]
Abstract
Vehicular pollution has become a major problem in urban areas due to the exponential increase in the number of automobiles. Typical exhaust emissions, which include nitrogen oxides (NOx), hydrocarbons (HC), carbon monoxide (CO), soot, and particulate matter (PM), doubtless have important negative effects on the environment and human health, including cardiovascular effects such as cardiac arrhythmias and heart attacks, and respiratory effects such as asthma attacks and bronchitis. The mitigation measures comprise either the use of clean alternative fuels or the use of innovative technologies. Several existing emission control technologies have proven effective at controlling emissions individually, such as selective catalytic reduction (SCR) and lean NOx trap (LNT) to reduce NOx and diesel particulate filter (DPF) specifically for PM abatement. These after-treatment devices are the most profitable means to reduce exhaust emissions to acceptable limits (EURO VI norms) with very little or no impact on the engine performances. Additionally, the relative lack of physical space in which to install emissions-control equipment is a key challenge for cars, especially those of small size. For this reason, to reduce both volume and cost of the after-treatment devices integrated catalytic systems (e.g., a sort of a "single brick") have been proposed, reducing both NOx and PM simultaneously. This review will summarize the currently reported materials for the simultaneous removal of NOx and soot, with particular attention to their nature, properties, and performances.
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Affiliation(s)
- Lidia Castoldi
- Dipartimento di Energia, Laboratory of Catalysis and Catalytic Processes and NEMAS, Centre of Excellence, Politecnico di Milano, via La Masa 34, 20156 Milano, Italy
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9
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Neelapala SD, Patnaik H, Dasari H. Enhancement of soot oxidation activity of manganese oxide (Mn2
O3
) through doping by the formation of Mn1.9
M0.1
O3-δ
(M = Co, Cu, and Ni). ASIA-PAC J CHEM ENG 2018. [DOI: 10.1002/apj.2234] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Satya Deepika Neelapala
- Department of Chemical Engineering, Manipal Institute of Technology; Manipal Academy of Higher Education; Manipal Karnataka India
| | - Harsh Patnaik
- Department of Chemical Engineering, Manipal Institute of Technology; Manipal Academy of Higher Education; Manipal Karnataka India
| | - Harshini Dasari
- Department of Chemical Engineering, Manipal Institute of Technology; Manipal Academy of Higher Education; Manipal Karnataka India
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10
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Khobragade R, Einaga H, Jain S, Saravanan G, Labhsetwar N. Sulfur dioxide-tolerant strontium chromate for the catalytic oxidation of diesel particulate matter. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02553j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mixed oxide of strontium and chromium shows enhanced, multi-cycle catalytic oxidation performance for diesel particulate matter with sulfur dioxide tolerance.
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Affiliation(s)
- Rohini Khobragade
- Energy and Resource Management Division
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI)
- Nagpur
- 440 020 India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Hisahiro Einaga
- Department of Advanced Materials Sciences
- Faculty of Engineering Sciences
- Kyushu University
- Fukuoka 816-8580
- Japan
| | - Suman Jain
- Chemical Sciences Division
- CSIR-Indian Institute of Petroleum
- Dehradun
- India
| | - Govindachetty Saravanan
- Energy and Resource Management Division
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI)
- Nagpur
- 440 020 India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Nitin Labhsetwar
- Energy and Resource Management Division
- CSIR-National Environmental Engineering Research Institute (CSIR-NEERI)
- Nagpur
- 440 020 India
- Academy of Scientific and Innovative Research (AcSIR)
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11
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Matarrese R, Castoldi L, Lietti L. Oxidation of model soot by NO2 and O2 in the presence of water vapor. Chem Eng Sci 2017. [DOI: 10.1016/j.ces.2017.08.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Emmerich T, Lotz K, Sliozberg K, Schuhmann W, Muhler M. Catalytic Oxidation of Soot Spray-Coated Lithium Zirconate in a Plate Reactor. CHEM-ING-TECH 2017. [DOI: 10.1002/cite.201600118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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13
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The Effect of Sr Addition in Cu- and Fe-Modified CeO2 and ZrO2 Soot Combustion Catalysts. Catalysts 2017. [DOI: 10.3390/catal7010028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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14
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Mahamulkar S, Yin K, Agrawal PK, Davis RJ, Jones CW, Malek A, Shibata H. Formation and Oxidation/Gasification of Carbonaceous Deposits: A Review. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02220] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shilpa Mahamulkar
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Kehua Yin
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Pradeep K. Agrawal
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Robert J. Davis
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Christopher W. Jones
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Andrzej Malek
- Hydrocarbons R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Hirokazu Shibata
- Hydrocarbons R&D, Dow Chemicals Benelux, NL 4530 AA, Terneuzen, The Netherlands
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15
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Matarrese R, Aneggi E, Castoldi L, Llorca J, Trovarelli A, Lietti L. Simultaneous removal of soot and NO over K- and Ba-doped ruthenium supported catalysts. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.12.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Shao W, Wang Z, Zhang X, Wang L, Ma Z, Li Q, Zhang Z. Promotion Effects of Cesium on Perovskite Oxides for Catalytic Soot Combustion. Catal Letters 2016. [DOI: 10.1007/s10562-016-1764-z] [Citation(s) in RCA: 12] [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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17
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Mahamulkar S, Yin K, Davis RJ, Shibata H, Malek A, Jones CW, Agrawal PK. In Situ Generation of Radical Coke and the Role of Coke-Catalyst Contact on Coke Oxidation. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b00556] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shilpa Mahamulkar
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Kehua Yin
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Robert J. Davis
- Department
of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Hirokazu Shibata
- Hydrocarbons R&D, Dow Benelux, NL 4530 AA, Terneuzen, Netherlands
| | - Andrzej Malek
- Hydrocarbons R&D, The Dow Chemical Company, Midland, Michigan 48674, United States
| | - Christopher W. Jones
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Pradeep K. Agrawal
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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18
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Li Q, Wang X, Chen H, Xin Y, Tian G, Lu C, Zhang Z, Zheng L, Zheng L. K-supported catalysts for diesel soot combustion: Making a balance between activity and stability. Catal Today 2016. [DOI: 10.1016/j.cattod.2015.07.036] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Cao C, Li X, Zha Y, Zhang J, Hu T, Meng M. Crossed ferric oxide nanosheets supported cobalt oxide on 3-dimensional macroporous Ni foam substrate used for diesel soot elimination under self-capture contact mode. NANOSCALE 2016; 8:5857-5864. [PMID: 26509240 DOI: 10.1039/c5nr05310b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Crossed Fe2O3 nanosheets supported cobalt oxide nanoparticles on three-dimensionally macroporous nickel foam substrate (xCo/Fe-NF) was designed and successfully prepared through a facile hydrothermal and impregnation route. These catalysts showed high catalytic soot combustion activities under self-capture contact mode. The three-dimensional macroporous structures of Ni foam and the crossed Fe2O3 nanosheets constituted macroporous voids can greatly increase the contact efficiency between soot particulates and catalysts. The interaction between Co and Fe facilitated the activation of the Fe-O bond and increased the amounts of active oxygen species, thus improving the redox property of the catalysts. The 0.6Co/Fe-NF catalyst exhibited the highest turnover frequency (TOF) for soot combustion, which is in good accordance with the largest amount of active oxygen species. Based upon the catalytic performance and multiple characterization results, two reaction pathways for soot oxidation are identified, namely, the direct oxidation by the activated oxygen species via oxygen vacancies and the NOx-aided soot oxidation.
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Affiliation(s)
- Chunmei Cao
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, P. R. China.
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20
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Ascaso S, Elena Gálvez M, Da Costa P, Moliner R, Lázaro Elorri MJ. Influence of gas hourly space velocity on the activity of monolithic catalysts for the simultaneous removal of soot and NOx. CR CHIM 2015. [DOI: 10.1016/j.crci.2015.03.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Cao C, Zhang Y, Liu D, Meng M. Gravity-Driven Multiple Collision-Enhanced Catalytic Soot Combustion over a Space-Open Array Catalyst Consisting of Ultrathin Ceria Nanobelts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:3659-3664. [PMID: 25914179 DOI: 10.1002/smll.201500207] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/30/2015] [Indexed: 06/04/2023]
Abstract
More than 122 times higher contact efficiency between soot and catalysts is achieved over the as-prepared CeO(2) nanobelt array catalysts as compared with the powder nanoparticle catalyst. A novel gravity-driven multiple collision-enhanced soot combustion mechanism is proposed for the first time.
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Affiliation(s)
- Chunmei Cao
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Yuxia Zhang
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Dongsheng Liu
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
| | - Ming Meng
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin Key Laboratory of Applied Catalysis Science & Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China
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22
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On the influence of the alumina precursor in Fe-K/Al2O3 structured catalysts for the simultaneous removal of soot and NOx: From surface properties to reaction mechanism. CR CHIM 2014. [DOI: 10.1016/j.crci.2013.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Alinezhadchamazketi A, Khodadadi AA, Mortazavi Y, Nemati A. Catalytic evaluation of promoted CeO2-ZrO2 by transition, alkali, and alkaline-earth metal oxides for diesel soot oxidation. J Environ Sci (China) 2013; 25:2498-2506. [PMID: 24649683 DOI: 10.1016/s1001-0742(12)60334-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Series of mixed metal oxides were synthesized by gel-combustion method and their catalytic activities for soot oxidation were investigated. The catalysts were M-Ce-Zr (M = Mn, Cu, Fe, K, Ba, Sr), and xK-20Mn-Ce-Zr (x = 0, 5, 10, 20), they were characterized by XRD, SEM, TPR and BET surface area techniques. The results of soot temperature programmed oxidation (TPO) in an O2 oxidizing atmosphere indicate that K-Ce-Zr has the highest catalytic activity for soot oxidation under loose contact condition, due to enhancement of the soot and catalyst contacts. On the other hand, under a tight contact condition, Mn-Ce-Zr and Cu-Ce-Zr nano-composites have high activities for soot oxidation and lower the soot TPO peak temperatures by about 280 and 270 degrees C, respectively, as compared to non-catalytic soot oxidation. Furthermore, the addition of up to 10 wt.% potassium oxides into Mn-Ce-Zr increases its catalytic activity and further reduces the soot TPO peak temperature by about 40 degrees C under loose contact condition.
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Ruiz ML, Lick ID, Ponzi MI, Ponzi EN. Catalysts of alkaline nitrates supported on oxides for the diesel soot combustion. Deactivation by hydro-treatment and CO2. CATAL COMMUN 2013. [DOI: 10.1016/j.catcom.2013.01.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Gálvez ME, Ascaso S, Moliner R, Lázaro MJ. Influence of the Alkali Promoter on the Activity and Stability of Transition Metal (Cu, Co, Fe) Based Structured Catalysts for the Simultaneous Removal of Soot and NOx. Top Catal 2013. [DOI: 10.1007/s11244-013-0004-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Me (Cu, Co, V)-K/Al2O3 supported catalysts for the simultaneous removal of soot and nitrogen oxides from diesel exhausts. Chem Eng Sci 2013. [DOI: 10.1016/j.ces.2012.10.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Matarrese R, Castoldi L, Lietti L. Reaction between soot and stored NOX over K-based LNT catalysts investigated by temperature programmed methods and labeling isotopic experiments. Catal Today 2012. [DOI: 10.1016/j.cattod.2012.07.046] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Investigation of Cs–Cu/ZrO2 systems for simultaneous NOx reduction and carbonaceous particles oxidation. Catal Today 2012. [DOI: 10.1016/j.cattod.2012.01.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Matarrese R, Artioli N, Castoldi L, Lietti L, Forzatti P. Interaction between soot and stored NOx during operation of LNT Pt–Ba/Al2O3 catalysts. Catal Today 2012. [DOI: 10.1016/j.cattod.2011.11.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gross MS, Ulla MA, Querini CA. Diesel particulate matter combustion with CeO2 as catalyst. Part I: System characterization and reaction mechanism. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcata.2011.10.018] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Artioli N, Matarrese R, Castoldi L, Lietti L, Forzatti P. Effect of soot on the storage-reduction performances of PtBa/Al2O3 LNT catalyst. Catal Today 2011. [DOI: 10.1016/j.cattod.2010.10.062] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Bassou B, Guilhaume N, Iojoiu EE, Farrusseng D, Lombaert K, Bianchi D, Mirodatos C. High-throughput approach to the catalytic combustion of diesel soot II: Screening of oxide-based catalysts. Catal Today 2011. [DOI: 10.1016/j.cattod.2010.05.042] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Zhang Z, Zhang Y, Su Q, Wang Z, Li Q, Gao X. Determination of intermediates and mechanism for soot combustion with NOx/O₂ on potassium-supported Mg-Al hydrotalcite mixed oxides by in situ FTIR. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:8254-8258. [PMID: 20923141 DOI: 10.1021/es102363f] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The soot combustion with NO(x) and/or O(2) on potassium-supported Mg-Al hydrotalcite mixed oxides under tight contact condition was studied using temperature-programmed oxidation (TPO), isothermal reaction and in situ FTIR techniques. The presence of NO(x) in O(2) favors the soot combustion at lower temperatures (<300 °C). However, a little suppression was observed at higher temperatures (>300 °C), which was accompanied by a substantial NO(x) reduction. The ketene (C═C═O) and isocyanate (NCO(-)) species were determined as the reaction intermediates. In NO(x) + O(2), NO(2) directly interacts with the free carbon sites (C═C*) through two parallel reactions: (1) NO(2) + C═C* → C═C═O + NO; (2) NO(2) + C═C* → NCO(-) + CO(2). The two reactions can proceed easily, which accounts for the promotion effect of NO(x) on soot combustion at lower temperatures. The further oxidation of NCO(-) by NO(2) or O(2) is responsible for the simultaneous reduction of NO(x). However, the reactions between NO(2) and C═C* are limited by the amount of free carbon sites, which can be provided by the oxidation of soot by O(2) at higher temperatures. The interaction of NO(x) and catalyst results in the formation of nitrates and nitrites, which poisoned the active K sites.
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Affiliation(s)
- Zhaoliang Zhang
- College of Chemistry and Chemical Engineering, University of Jinan, 106 Jiwei Rd., Jinan 250022, P. R. China.
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Matarrese R, Castoldi L, Lietti L, Forzatti P. Simultaneous Removal of NO x and Soot Over Pt–Ba/Al2O3 and Pt–K/Al2O3 DPNR Catalysts. Top Catal 2009. [DOI: 10.1007/s11244-009-9400-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Roy S, Baiker A. NOx Storage−Reduction Catalysis: From Mechanism and Materials Properties to Storage−Reduction Performance. Chem Rev 2009; 109:4054-91. [DOI: 10.1021/cr800496f] [Citation(s) in RCA: 441] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sounak Roy
- Department of Chemistry and Applied Biosciences, ETH Zurich, Hönggerberg, HCI, CH-8093 Zurich, Switzerland
| | - Alfons Baiker
- Department of Chemistry and Applied Biosciences, ETH Zurich, Hönggerberg, HCI, CH-8093 Zurich, Switzerland
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