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Zhang L, Shan Y, Yan Z, Liu Z, Yu Y, He H. Efficient Pt/KFI zeolite catalysts for the selective catalytic reduction of NO x by hydrogen. J Environ Sci (China) 2024; 138:102-111. [PMID: 38135379 DOI: 10.1016/j.jes.2023.03.004] [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: 01/19/2023] [Revised: 03/02/2023] [Accepted: 03/02/2023] [Indexed: 12/24/2023]
Abstract
Aiming at purification of NOx from hydrogen internal combustion engines (HICEs), the hydrogen selective catalytic reduction (H2-SCR) reaction was investigated over a series of Pt/KFI zeolite catalysts. H2 can readily reduce NOx to N2 and N2O while O2 inhibited the deNOx efficiency by consuming the reductant H2. The Pt/KFI zeolite catalysts with Pt loading below 0.1 wt.% are optimized H2-SCR catalysts due to its suitable operation temperature window since high Pt loading favors the H2-O2 reaction which lead to the insufficient of reactants. Compared to metal Pt0 species, Ptδ+ species showed lower activation energy of H2-SCR reaction and thought to be as reasonable active sites. Further, Eley-Rideal (E-R) reaction mechanism was proposed as evidenced by the reaction orders in kinetic studies. Last, the optimized reactor was designed with hybrid Pt/KFI catalysts with various Pt loading which achieve a high NOx conversion in a wide temperature range.
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Affiliation(s)
- Ligang Zhang
- School of Rare Earths, University of Science and Technology of China, Hefei 230026, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China
| | - Yulong Shan
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Zidi Yan
- Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China
| | - Zhongqi Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yunbo Yu
- School of Rare Earths, University of Science and Technology of China, Hefei 230026, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Hong He
- School of Rare Earths, University of Science and Technology of China, Hefei 230026, China; Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341119, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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2
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Liu G, Wang P, Zhang H, Li Y, Zhan S. Enhancement of Pt-O Synergistic Sites through Titanium Vacancies for Low-Temperature Nitrogen Oxide Reduction. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:20064-20073. [PMID: 37936375 DOI: 10.1021/acs.est.3c06372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Improving the reaction rate of each step is significant for accelerating the multistep reaction of NO reduction by H2. However, simultaneously enhancing the activation of different gaseous reactants using single-atom catalysts remains a challenge to maximize the activity. Herein, we propose a strategy that utilizes titanium-vacancy-regulated electronic properties of single atoms and defective support (Pt1/d-TiO2) to facilitate electron transfer from edge-share O atoms (OTi) to adjacent Pt single atoms. This leads to the formation of low-valence Pt and unsaturated-charge OTi sites, which causes the catalytic reaction to follow a synergistic mechanism. Specifically, experimental and theoretical analyses demonstrate that low-valence Pt sites finely tune the adsorption of H2 molecules, consequently lowering the dissociation energy from 0.15 to as low as 0.01 eV. Moreover, using quasi-in situ spectroscopy, we clearly observe NO molecules being adsorbed on interfacial oxygen sites of a defective support. Then, the bond energy of the N-O bond is weakened through an electron acceptance-donation mechanism between unsaturated-charge OTi sites and NO, thereby facilitating NO activation. The designed single-atom catalysts with synergistic sites exhibit unmatched activity at low temperatures (above 90% NOx conversion at 100 °C), along with higher turnover frequency value (0.74 s-1) and superior stability, making them potentially suitable for industrial applications.
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Affiliation(s)
- Guoquan Liu
- MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Pengfei Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - He Zhang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| | - Yi Li
- Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Sihui Zhan
- MOE Key Laboratory of Pollution Processes and Environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, P. R. China
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3
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Long X, Gong L, Li C. Regeneration of [Fe(
II
)‐
NTA
]
−
catalyzed by activated carbon in the simultaneous removal of sulphur dioxide and nitric oxide. CAN J CHEM ENG 2023. [DOI: 10.1002/cjce.24905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
- Xiang‐Li Long
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering East China University of Science and Technology Shanghai 200237 People's Republic of China
| | - Li Gong
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering East China University of Science and Technology Shanghai 200237 People's Republic of China
| | - Cong Li
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering East China University of Science and Technology Shanghai 200237 People's Republic of China
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4
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Poryvaev AS, Gjuzi E, Yazikova AA, Polyukhov DM, Albrekht YN, Efremov AA, Kudriavykh NA, Yanshole VV, Hoffmann F, Fröba M, Fedin MV. Blatter Radical-Decorated Silica as a Prospective Adsorbent for Selective NO Capture from Air. ACS APPLIED MATERIALS & INTERFACES 2023; 15:5191-5197. [PMID: 36652301 DOI: 10.1021/acsami.2c19183] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Nitrogen oxides are adverse poisonous gases present in the atmosphere and having detrimental effects on the human health and environment. In this work, we propose a new type of mesoporous materials capable of capturing nitrogen monoxide (NO) from air. The designed material combines the robust Santa Barbara Amorphous-15 silica scaffold and ultrastable Blatter-type radicals acting as NO traps. Using in situ electron paramagnetic resonance spectroscopy, we demonstrate that NO capture from air is selective and reversible at practical conditions, thus making Blatter radical-decorated silica highly promising for environmental applications.
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Affiliation(s)
- Artem S Poryvaev
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
| | - Eva Gjuzi
- Institute of Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Anastasiya A Yazikova
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
- Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
| | - Daniil M Polyukhov
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
| | - Yana N Albrekht
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
- Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
| | - Aleksandr A Efremov
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
- Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
| | | | - Vadim V Yanshole
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
| | - Frank Hoffmann
- Institute of Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Michael Fröba
- Institute of Inorganic and Applied Chemistry, University of Hamburg, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany
| | - Matvey V Fedin
- International Tomography Center SB RAS, Institutskaya Street 3a, Novosibirsk, 630090, Russia
- Novosibirsk State University, Pirogova Street 2, 630090 Novosibirsk, Russia
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5
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Liu Y, Liu J, Zhu B, Chen J, Li F, Sun Y. Insight into the micro-mechanism of Co doping to improve the deNOx performance and H2O resistance of β-MnO2 catalysts. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.130983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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6
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Borchers M, Lott P, Deutschmann O. Selective Catalytic Reduction with Hydrogen for Exhaust gas after-treatment of Hydrogen Combustion Engines. Top Catal 2022. [DOI: 10.1007/s11244-022-01723-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
AbstractIn this work, two palladium-based catalysts with either ZSM-5 or Zeolite Y as support material are tested for their performance in selective catalytic reduction of NOx with hydrogen (H2-SCR). The ligh-toff measurements in synthetic exhaust gas mixtures typical for hydrogen combustion engines are supplemented by detailed catalyst characterization comprising N2 physisorption, X-ray powder diffraction (XRD), hydrogen temperature programmed reduction (H2-TPR) and ammonia temperature programmed desorption (NH3-TPD). Introducing 10% or 20% TiO2 into the catalyst formulations reduced the surface area and the number of acidic sites for both catalysts, however, more severely for the Zeolite Y-supported catalysts. The higher reducibility of the Pd particles that was uncovered by H2-TPR resulted in an improved catalytic performance during the light-off measurements and substantially boosted NO conversion. Upon exposition to humid exhaust gas, the ZSM-5-supported catalysts showed a significant drop in performance, whereas the Zeolite Y-supported catalyst kept the high levels of conversion while shifting the selectivity from N2O more toward NH3 and N2. The 1%Pd/20%TiO2/HY catalyst subject to this work outperforms one of the most active and selective benchmark catalyst formulations, 1%Pd/5%V2O5/20%TiO2-Al2O3, making Zeolite Y a promising support material for H2-SCR catalyst formulations that allow efficient and selective NOx-removal from exhaust gases originating from hydrogen-fueled engines.
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7
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Schröder D, Kureti S. Low-Temperature NOx Reduction by H2 on Mo-Promoted Pt/ZrO2 Catalysts in Lean Exhaust Gases. Top Catal 2022. [DOI: 10.1007/s11244-022-01720-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractThis article aims to improve the low-temperature H2-deNOx performance of the active Pt/ZrO2 catalyst using MoOx as a promoter. For this purpose, a systematic series of Pt/ZrO2 samples were prepared with a Pt content of 0.25 wt% and Mo loads from 0 to 10 wt%. The samples were physico-chemically characterized by means of powder X-ray diffraction, N2 physisorption, temperature-programmed desorption of CO and NH3, Raman spectroscopy and diffuse reflectance infrared spectroscopy using NH3 as probe molecule, while the H2-deNOx efficiency was investigated in a lean synthetic exhaust. The Pt/ZrO2 catalyst with a Mo load of 3 wt% showed the best performance, including H2-deNOx between 80 °C and 150 °C, a maximum NOx conversion of 90% and N2 selectivity up to 78%. Isolated MoOx species predominately present at Mo loads below 4 wt% were found to act as structural promoter by stabilizing the BET surface area, while also providing smaller Pt particles and more active Pt sites, respectively. By contrast, the aggregated Mo oxide moieties found at higher Mo loads exhibit a clearly weaker promotional effect. The structure–activity-selectivity correlations also suggest that the promoter additionally enables a SCR-related mechanistic pathway to be followed, including the spill-over of NHx species from the Pt sites to strong Lewis acid sites in the case of highly dispersed MoOx entities followed by reaction with NOx.
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8
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Purification Technologies for NOx Removal from Flue Gas: A Review. SEPARATIONS 2022. [DOI: 10.3390/separations9100307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Nitrogen oxide (NOx) is a major gaseous pollutant in flue gases from power plants, industrial processes, and waste incineration that can have adverse impacts on the environment and human health. Many denitrification (de-NOx) technologies have been developed to reduce NOx emissions in the past several decades. This paper provides a review of the recent literature on NOx post-combustion purification methods with different reagents. From the perspective of changes in the valence of nitrogen (N), purification technologies against NOx in flue gas are classified into three approaches: oxidation, reduction, and adsorption/absorption. The removal processes, mechanisms, and influencing factors of each method are systematically reviewed. In addition, the main challenges and potential breakthroughs of each method are discussed in detail and possible directions for future research activities are proposed. This review provides a fundamental and systematic understanding of the mechanisms of denitrification from flue gas and can help researchers select high-performance and cost-effective methods.
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9
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Zhang T, Zhang Z, Luo D, Xie T, Zheng WT, Hu Z, Yang RT. Photothermal Synergism on Pd/TiO 2 Catalysts with Varied TiO 2 Crystalline Phases for NO x Removal via H 2-SCR: A Transient DRIFTS Study. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tao Zhang
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Zhenyu Zhang
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Decun Luo
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Tao Xie
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Wen-Tao Zheng
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
| | - Zhun Hu
- Institute of Industrial Catalysis, School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an 710049, China
| | - Ralph T. Yang
- Department of Chemical Engineering, University of Michigan, 3074 H.H. Dow, 2300 Hayward Street, Ann Arbor, Michigan 48109-2136, United States
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10
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Zhang Y, Chen J, Liu Z. Selective catalytic reduction of NOx by hydrogen over PtIr/TiO2 catalyst. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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11
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Lott P, Wagner U, Koch T, Deutschmann O. Der Wasserstoffmotor – Chancen und Herausforderungen auf dem Weg zu einer dekarbonisierten Mobilität. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202100155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Patrick Lott
- Karlsruher Institut für Technologie Institut für Technische Chemie und Polymerchemie (ITCP) Engesserstraße 20 76131 Karlsruhe Deutschland
| | - Uwe Wagner
- Karlsruher Institut für Technologie (KIT) Institut für Kolbenmaschinen (IFKM) Rintheimer Querallee 2 76131 Karlsruhe Deutschland
| | - Thomas Koch
- Karlsruher Institut für Technologie (KIT) Institut für Kolbenmaschinen (IFKM) Rintheimer Querallee 2 76131 Karlsruhe Deutschland
| | - Olaf Deutschmann
- Karlsruher Institut für Technologie Institut für Technische Chemie und Polymerchemie (ITCP) Engesserstraße 20 76131 Karlsruhe Deutschland
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12
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Lee K, Choi B. HC-SCR system combining Ag/Al2O3 and Pd/Al2O3 catalysts with resistance to hydrothermal aging for simultaneous removal of NO, HC, and CO. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.06.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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13
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Patel VK, Sharma S. Effect of oxide supports on palladium based catalysts for NO reduction by H2-SCR. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.04.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Abstract
Removal of nitrogen oxides during coal combustion is a subject of great concerns. The present study reviews the state-of-art catalysts for NO reduction by CO, CH4, and H2. In terms of NO reduction by CO and CH4, it focuses on the preparation methodologies and catalytic properties of noble metal catalysts and non-noble metal catalysts. In the technology of NO removal by H2, the NO removal performance of the noble metal catalyst is mainly discussed from the traditional carrier and the new carrier, such as Al2O3, ZSM-5, OMS-2, MOFs, perovskite oxide, etc. By adopting new preparation methodologies and introducing the secondary metal component, the catalysts supported by a traditional carrier could achieve a much higher activity. New carrier for catalyst design seems a promising aspect for improving the catalyst performance, i.e., catalytic activity and stability, in future. Moreover, mechanisms of catalytic NO reduction by these three agents are discussed in-depth. Through the critical review, it is found that the adsorption of NOx and the decomposition of NO are key steps in NO removal by CO, and the activation of the C-H bond in CH4 and H-H bonds in H2 serves as a rate determining step of the reaction of NO removal by CH4 and H2, respectively.
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15
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Yao Z, Li L, Liu X, Hui KN, Shi L, Zhou F, Hu M, Hui KS. Mechanistic insights into NO‒H 2 reaction over Pt/boron-doped graphene catalyst. JOURNAL OF HAZARDOUS MATERIALS 2021; 406:124327. [PMID: 33139106 DOI: 10.1016/j.jhazmat.2020.124327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/16/2020] [Accepted: 10/17/2020] [Indexed: 06/11/2023]
Abstract
This work presents a systematical experimental and density functional theory (DFT) studies to reveal the mechanism of NO reduction by H2 reaction over platinum nanoparticles (NPs) deposited on boron-doped graphene (denoted as Pt/BG) catalyst. Both characterizations and DFT calculations identified boron (in Pt/BG) as an additional NO adsorption site other than the widely recognized Pt NPs. Moreover, BG led to a decrease of Pt NPs size in Pt/BG, which facilitated hydrogen spillover. The mathematical and physical criteria of the Langmuir-Hinshelwood dual-site kinetic model over the Pt/BG were satisfied, indicating that adsorbed NO on boron (in Pt/BG) was further activated by H-spillover. On the other hand, Pt/graphene (Pt/Gr) demonstrated a typical Langmuir-Hinshelwood single-site mechanism where Pt NPs solely served as active sites for NO adsorption. This work helps understand NO-H2 reaction over Pt/BG and Pt/Gr catalysts in a closely mechanistic view and provides new insights into roles of active sites for improving the design of catalysts for NO abatement.
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Affiliation(s)
- Zhenhua Yao
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China
| | - Lei Li
- Key Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology (EBEAM) of Chongqing, Yangtze Normal University, Chongqing 408100, China
| | - Xuguang Liu
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Kwun Nam Hui
- Institute of Applied Physics and Materials Engineering (IAPME) University of Macau Avenida da Universidade, Taipa, Macau, China
| | - Ling Shi
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China
| | - Furong Zhou
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China
| | - Maocong Hu
- Hubei Key Laboratory of Industrial Fume and Dust Pollution Control, and Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education, Jianghan University, Wuhan 430056, China.
| | - K S Hui
- School of Engineering, University of East Anglia, Norwich NR4 7TJ, United Kingdom.
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16
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Ma L, Ma C, Xie T, Cao L, Yang J. SO 2 Resisting Pd-doped Pr 1-x Ce x MnO 3 Perovskites for Efficient Denitration at Low Temperature. Chem Asian J 2021; 16:530-537. [PMID: 33450118 DOI: 10.1002/asia.202001426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 01/14/2021] [Indexed: 11/10/2022]
Abstract
H2 -SCR is served as the promising technology for the controlling of NOx emission, and the Pd-based derivative catalyst exhibited high NOx reduction performance. Effectively regulating the electronic configuration of the active component is favorable to the rational optimization of noble Pd. In this work, a series of Pr1-x Cex Mn1-y Pdy O3 @Ni were successfully synthesized and exhibited superior NO conversion efficiency at low temperatures. 92.7 % conversion efficiency was achieved at 200 °C over Pr0.9 Ce0.1 Mn0.9 Pd0.1 O3 @Ni in the presence of 4 % O2 with a GHSV of 32000 h-1 . Meanwhile, the outstanding performance was obtained in the resistance to SO2 (200 ppm) and H2 O (8 %). Deduced from the results of XRD, Raman, XPS, and H2 -TPR, the modification of d orbit states in palladium was confirmed originating from the incorporation in the B site of Pr0.9 Ce0.1 Mn0.9 Pd0.1 O3 . The existence of higher valence (Pd3+ and Pd4+ ) than the bivalence in Pr0.9 Ce0.1 Mn0.9 Pd0.1 O3 catalyst was evidenced by XPS analysis. Our research provides a new sight into the H2 -SCR through the higher utilization of Pd.
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Affiliation(s)
- Linghui Ma
- School of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Chenglong Ma
- School of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Tianying Xie
- School of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Limei Cao
- School of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Ji Yang
- School of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China.,Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, P. R. China
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17
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Borchers M, Keller K, Lott P, Deutschmann O. Selective Catalytic Reduction of NO x with H 2 for Cleaning Exhausts of Hydrogen Engines: Impact of H 2O, O 2, and NO/H 2 Ratio. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05630] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Borchers
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 20, Karlsruhe 76131, Germany
| | - Kevin Keller
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 20, Karlsruhe 76131, Germany
| | - Patrick Lott
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 20, Karlsruhe 76131, Germany
| | - Olaf Deutschmann
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 20, Karlsruhe 76131, Germany
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18
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Larabi C, Chen C, Merle N, Charlin M, Szeto KC, De Mallmann A, Benayad A, B. Meziane K, Kaddouri A, Nguyen HP, Taoufik M. Well-defined surface tungstenocarbyne complex through the reaction of [W(CtBu)(CH2tBu)3] with CeO2: a highly stable precatalyst for NOx reduction with NH3. NEW J CHEM 2021. [DOI: 10.1039/d0nj02146f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly-efficient NH3-SCR single site catalyst W(CtBu)(CH2tBu)3/CeO2–200, was prepared by surface organometallic chemistry approach. This catalyst showed high catalytic activity and stability with a broad operational temperature window.
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Affiliation(s)
- Cherif Larabi
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
| | - Cuirong Chen
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
| | - Nicolas Merle
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
| | - Marc Charlin
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
| | - Kai C. Szeto
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
| | | | - Anass Benayad
- Université Grenoble Alpes
- CEA-LITEN
- 38054 Grenoble Cedex 9
- France
| | - Karima B. Meziane
- Université de Lille
- CNRS
- UMR 8516 - LASIRE - Laboratoire de Spectroscopie pour les Interactions
- la Réactivité et l'Environnement
- F-59000 Lille
| | - Akim Kaddouri
- Université Lyon 1 - CNRS
- UMR 5256
- IRCELYON
- F-69626 Villeurbanne
- France
| | | | - Mostafa Taoufik
- Université Lyon 1
- Institut de Chimie Lyon
- CPE Lyon CNRS
- UMR 5128 CP2M
- PCM
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19
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Sheng L, Li S, Ma Z, Wang F, He H, Gao Y, Zhu B, Wang Y, Yang H. Mechanistic insight into the influence of O2 on N2O formation in the selective catalytic reduction of NO with NH3 over Pd/CeO2 catalyst. Catal Sci Technol 2021. [DOI: 10.1039/d0cy02325f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
O2 greatly affected the pathway for NO reduction over the Pd/CeO2 catalyst and resulted in a temperature-dependent NH3-SCR performance and formation of N2O.
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Affiliation(s)
- Liping Sheng
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Songda Li
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhaoxia Ma
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Fei Wang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Hu He
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Yi Gao
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- 201800 China
| | - Beien Zhu
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology
- Shanghai Institute of Applied Physics
- Chinese Academy of Sciences
- Shanghai
- 201800 China
| | - Yong Wang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Hangsheng Yang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy
- School of Materials Science and Engineering
- Zhejiang University
- Hangzhou 310027
- China
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20
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Rajbala, Bhatia D. Crystallite-scale model for NOx reduction by hydrogen spillover on SBA-15 and MCM-41. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.02.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Hu Z, Zhang T, Li D, Yang RT. Understanding the promotional effect of 3d transition metals (Fe, Co, Cu) on Pd/TiO2 for H2-SCR. Catal Sci Technol 2021. [DOI: 10.1039/d0cy01840f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The addition of 3d transition metal (Fe, Co, Cu) oxides on Pd/TiO2 catalysts show that the formation of monodentate nitrates is the rate limiting step in the formation of NHx species, which is active intermediate for the enhancement of H2-SCR activities.
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Affiliation(s)
- Zhun Hu
- Institute of Industrial Catalysis
- School of Chemical Engineering and Technology
- Xi'an Jiaotong University
- Xi'an
- China
| | - Tao Zhang
- Institute of Industrial Catalysis
- School of Chemical Engineering and Technology
- Xi'an Jiaotong University
- Xi'an
- China
| | - Dan Li
- Institute of Industrial Catalysis
- School of Chemical Engineering and Technology
- Xi'an Jiaotong University
- Xi'an
- China
| | - Ralph T. Yang
- Department of Chemical Engineering
- University of Michigan
- Ann Arbor
- USA
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22
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Zhang Y, Zeng H, Jia B, Liu Z. Selective catalytic reduction of NOx by H2 over a novel Pd/FeTi catalyst. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.05.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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23
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Patel VK, Sharma S. Supports materialization of Pd based catalysts for NO
x
removal by hydrogen assisted selective catalytic reduction in the presence of oxygen. ChemCatChem 2020. [DOI: 10.1002/cctc.202000756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Vivek Kumar Patel
- Department of Chemical Engineering & Technology Indian Institute Of Technology Banaras Hindu University Varanasi 221005 Uttar Pradesh India
| | - Sweta Sharma
- Department of Chemical Engineering & Technology Indian Institute Of Technology Banaras Hindu University Varanasi 221005 Uttar Pradesh India
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24
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Liu Z, Jia B, Zhang Y, Haneda M. Engineering the Metal–Support Interaction on Pt/TiO 2 Catalyst to Boost the H 2-SCR of NO x. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01792] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhiming Liu
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Bin Jia
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yiyang Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China
- Beijing Key Laboratory of Energy Environmental Catalysis, Beijing University of Chemical Technology, Beijing 100029, China
| | - Masaaki Haneda
- Advanced Ceramics Research Center, Nagoya Institute of Technology, 10-6-29 Asahigaoka, Tajimi, Gifu 507-0071, Japan
- Frontier Research Institute for Materials Science, Nagoya Institute of Technology, Gokiso-cho, Showaku, Nagoya 465-8555, Japan
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25
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Gholami F, Tomas M, Gholami Z, Vakili M. Technologies for the nitrogen oxides reduction from flue gas: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 714:136712. [PMID: 31991274 DOI: 10.1016/j.scitotenv.2020.136712] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 01/03/2020] [Accepted: 01/13/2020] [Indexed: 06/10/2023]
Abstract
The required energy of the global industry is mostly generated from fossil fuel sources, such as natural gas, gasoline, diesel, oil, and coal. Nitrogen oxides are one of the main air pollutants that are produced from the combustion of fossil fuels in stationary and mobile sources. Development of new technologies to decrease the NOx emission from exhaust gases is essential due to the harmful effect of NOx on the environment and human health. Compared with pre-combustion and combustion methods (with <50% NOx removal efficiency), the post-combustion methods with higher efficiency (above 80%) have attracted more attention in NOx elimination. This review describes the currently used technologies of NOx abatement. Different available post-combustion methods of NOx removal, including selective catalytic reduction (using different types of reducing reagents, including ammonia, hydrogen, hydrocarbons, and carbon monoxide), selective noncatalytic reduction, wet scrubbing, adsorption, electron beam, nonthermal plasma, and electrochemical reduction of NOx, are discussed.
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Affiliation(s)
- Fatemeh Gholami
- New Technologies - Research Centre, Engineering of Special Materials, University of West Bohemia, Plzeň 301 00, Czech Republic.
| | - Martin Tomas
- New Technologies - Research Centre, Engineering of Special Materials, University of West Bohemia, Plzeň 301 00, Czech Republic
| | - Zahra Gholami
- Unipetrol Centre of Research and Education, a.s, Areál Chempark 2838, Záluží 1, 43670 Litvínov, Czech Republic
| | - Mohammadtaghi Vakili
- Green intelligence Environmental School, Yangtze Normal University, Chongqing 408100, China
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26
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Gholami Z, Luo G, Gholami F, Yang F. Recent advances in selective catalytic reduction of NOx by carbon monoxide for flue gas cleaning process: a review. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2020. [DOI: 10.1080/01614940.2020.1753972] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Zahra Gholami
- Unipetrol Centre of Research and Education, Litvínov, Czech Republic
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Guohua Luo
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, China
| | - Fatemeh Gholami
- New Technologies - Research Centre, University of West Bohemia, Engineering of Special Materials, Plzeň, Czech Republic
| | - Fan Yang
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing, China
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27
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Current Catalyst Technology of Selective Catalytic Reduction (SCR) for NOx Removal in South Korea. Catalysts 2020. [DOI: 10.3390/catal10010052] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Recently, air pollution has worsened throughout the world, and as regulations on nitrogen oxides (NOx) are gradually tightened many researchers and industrialists are seeking technologies to cope with them. In order to meet the stringent regulations, research is being actively conducted worldwide to reduce NOx-causing pollution. However, different countries tend to have different research trends because of their regional and industrial environments. In this paper, the results of recent catalyst studies on NOx removal by selective catalytic reduction are reviewed with the sources and regulations applied according to the national characteristics of South Korea. Specifically, we emphasized the three major NOx emissions sources in South Korea such as plant, automobile, and ship industries and the catalyst technologies used.
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28
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Hu Z, Yong X, Li D, Yang RT. Synergism between palladium and nickel on Pd-Ni/TiO2 for H2-SCR: A transient DRIFTS study. J Catal 2020. [DOI: 10.1016/j.jcat.2019.11.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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