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Zhang S, Hu J, Li SFY, Lu H, Wang G, Lu C, Sarwar MT, Tang A, Yang H. Electrochemical sensing mechanism of ammonium ions over an Ag/TiO 2 composite electrode modified by hematite. Chem Commun (Camb) 2023; 59:2636-2639. [PMID: 36779275 DOI: 10.1039/d3cc00240c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Here, we demonstrate a new electrochemical sensing mechanism of ammonium ions (NH4+) involving a two-electron oxygen reduction reaction (ORR) and a hydrazine reaction. The NH4+ are electrooxidized to hydrazine by H2O2 derived from the ORR over a self-supporting Ag/TiO2 nanotube array composite electrode modified by hematite (Ag/Fe2O3/TNTs). The Ag/Fe2O3/TNT sensor exhibits a high sensitivity of 1876 µA mM-1 cm-2 with a detection limit of 0.18 µM under non-alkaline conditions, a short response time of 3 s, good reproducibility, and fine selectivity among various interferents, and is also successfully used in real water bodies to display high accuracy. Furthermore, this new mechanism has a certain universality in a range of Ag (main catalyst)/transition metal oxide (cocatalyst)/TNT sensing systems. This work offers a new design basis for the urgently needed electrochemical ammonia nitrogen sensors.
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Affiliation(s)
- Shilin Zhang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074, P. R. China. .,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.,Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China.,Department of Chemistry National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.,NUS Environmental Research Institute, National University of Singapore, T-Lab Building, 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Jinqing Hu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Sam Fong Yau Li
- Department of Chemistry National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.,NUS Environmental Research Institute, National University of Singapore, T-Lab Building, 5A Engineering Drive 1, Singapore 117411, Singapore
| | - Hongxiu Lu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Gang Wang
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Chang Lu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
| | - Muhammad Tariq Sarwar
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074, P. R. China. .,Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China.,Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan 430074, P. R. China
| | - Aidong Tang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074, P. R. China. .,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China.,Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China.,Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan 430074, P. R. China
| | - Huaming Yang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074, P. R. China. .,Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, P. R. China.,Key Laboratory of Functional Geomaterials in China Nonmetallic Minerals Industry, China University of Geosciences, Wuhan 430074, P. R. China
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Jing Y, Taketoshi K, Zhang N, He C, Toyao T, Maeno Z, Ohori T, Ishikawa N, Shimizu KI. Catalytic Decomposition of N 2O in the Presence of O 2 through Redox of Rh Oxide in a RhO x/ZrO 2 Catalyst. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01321] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yuan Jing
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Hokkaido, Japan
| | - Koichiro Taketoshi
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Hokkaido, Japan
| | - Ningqiang Zhang
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Hokkaido, Japan
| | - Chenxi He
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Hokkaido, Japan
| | - Takashi Toyao
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Hokkaido, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Zen Maeno
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Hokkaido, Japan
| | - Teppei Ohori
- Isuzu Advanced Engineering Center, Ltd., 8 Tsuchidana, Fujisawa 252-0881, Japan
| | - Naoya Ishikawa
- Isuzu Advanced Engineering Center, Ltd., 8 Tsuchidana, Fujisawa 252-0881, Japan
| | - Ken-ichi Shimizu
- Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo 001-0021, Hokkaido, Japan
- Elements Strategy Initiative for Catalysts and Batteries, Kyoto University, Katsura, Kyoto 615-8520, Japan
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Application Prospect of K Used for Catalytic Removal of NOx, COx, and VOCs from Industrial Flue Gas: A Review. Catalysts 2021. [DOI: 10.3390/catal11040419] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
NOx, COx, and volatile organic compounds (VOCs) widely exist in motor vehicle exhaust, coke oven flue gas, sintering flue gas, and pelletizing flue gas. Potassium species have an excellent promotion effect on various catalytic reactions for the treatment of these pollutants. This work reviews the promotion effects of potassium species on the reaction processes, including adsorption, desorption, the pathway and selectivity of reaction, recovery of active center, and effects on the properties of catalysts, including basicity, electron donor characteristics, redox property, active center, stability, and strong metal-to support interaction. The suggestions about how to improve the promotion effects of potassium species in various catalytic reactions are put forward, which involve controlling carriers, content, preparation methods and reaction conditions. The promotion effects of different alkali metals are also compared. The article number about commonly used active metals and promotion ways are also analyzed by bibliometric on NOx, COx, and VOCs. The promotion mechanism of potassium species on various reactions is similar; therefore, the application prospect of potassium species for the coupling control of multi-pollutants in industrial flue gas at low-temperature is described.
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An investigation on the N2O decomposition activity of Mn Co1−Co2O4 nanorods prepared by the thermal decomposition of their oxalate precursors. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2020.10.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Abstract
In this work, we studied the effect of alkali-activated zeolite foams modifications on properties and catalytic activity of cobalt phases in the process of catalytic decomposition of N2O. The zeolite foam supports were prepared by alkali activation of natural zeolite followed by acid leaching and ion exchange. The cobalt catalysts were synthesised by a different deposition technique (direct ion exchange (DIE) and incipient wetness impregnation (IWI) method of cobalt on zeolite foams. For comparison, catalysts on selected supports were prepared and the properties of all were compared in catalytic tests in the pellet form and as crushed catalysts to determine the effect of internal diffusion. The catalysts and supports were in detail characterized by a variety of techniques. The catalyst activity strongly depended on the structure of support and synthesis procedure of a cobalt catalyst. Ion exchange method provided active phase with higher surface areas and sites with better reducibility, both of these factors contributed to higher N2O conversions of more than 80% at 450 °C. A large influence can also be attributed to the presence of alkali metals, in particular, potassium, which resulted in a modification of electronic and acid base properties of the cobalt oxide phase on the catalyst surface. The promotional effect of potassium is better reducibility of cobalt species.
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Contrasting Effects of Potassium Addition on M3O4 (M = Co, Fe, and Mn) Oxides during Direct NO Decomposition Catalysis. Catalysts 2020. [DOI: 10.3390/catal10050561] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
While the promotional effect of potassium on Co3O4 NO decomposition catalytic performance is established in the literature, it remains unknown if K is also a promoter of NO decomposition over similar simple first-row transition metal spinels like Mn3O4 and Fe3O4. Thus, potassium was impregnated (0.9–3.0 wt.%) on Co3O4, Mn3O4, and Fe3O4 and evaluated for NO decomposition reactivity from 400–650 °C. The activity of Co3O4 was strongly dependent on the amount of potassium present, with a maximum of ~0.18 [(µmol NO to N2) g−1 s−1] at 0.9 wt.% K. Without potassium, Fe3O4 exhibited deactivation with time-on-stream due to a non-catalytic chemical reaction with NO forming α-Fe2O3 (hematite), which is inactive for NO decomposition. Potassium addition led to some stabilization of Fe3O4, however, γ-Fe2O3 (maghemite) and a potassium–iron mixed oxide were also formed, and catalytic activity was only observed at 650 °C and was ~50× lower than 0.9 wt.% K on Co3O4. The addition of K to Mn3O4 led to formation of potassium–manganese mixed oxide phases, which became more prevalent after reaction and were nearly inactive for NO decomposition. Characterization of fresh and spent catalysts by scanning electron microscopy and energy dispersive X-ray analysis (SEM/EDX), in situ NO adsorption Fourier transform infrared spectroscopy, temperature programmed desorption techniques, X-ray powder diffraction (XRD), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) revealed the unique potassium promotion of Co3O4 for NO decomposition arises not only from modification of the interaction of the catalyst surface with NOx (increased potassium-nitrite formation), but also from an improved ability to desorb oxygen as product O2 while maintaining the integrity and purity of the spinel phase.
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Isupova LA, Ivanova YA. Removal of Nitrous Oxide in Nitric Acid Production. KINETICS AND CATALYSIS 2020. [DOI: 10.1134/s0023158419060041] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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You Y, Chen S, Li J, Zeng J, Chang H, Ma L, Li J. Low-temperature selective catalytic reduction of N 2O by CO over Fe-ZSM-5 catalysts in the presence of O 2. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121117. [PMID: 31518802 DOI: 10.1016/j.jhazmat.2019.121117] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 08/27/2019] [Accepted: 08/28/2019] [Indexed: 06/10/2023]
Abstract
Nitrous oxide (N2O) is an important ozone-depletion substance and greenhouse gas. Selective catalytic reduction (SCR) of N2O by CO is considered an effective method for N2O elimination. However, O2 exhibited a significant inhibition effect on the catalytic performance of N2O reduction by CO. A series of iron-based catalysts were prepared to investigate the effect of O2 in SCR of N2O by CO. The Fe-Z-pH2 (Fe-ZSM-5 ion-exchanged under pH of 2) catalyst manifested superior activity at low temperature and excellent O2 resistance in N2O reduction process. The characterization results from UV-vis DR spectra and XPS indicated that α-sites are the main active sites in Fe-Z-pH2, and they were inert to O2 but highly active to N2O. It could be concluded that the competition effect between N2O and O2 was very important over different catalysts. O2 is more prevalent over α-Fe2O3 catalyst, while N2O dominates over Fe-Z-pH2 catalyst. Moreover, in the presence of O2, Fe-Z-pH2 exhibited better performance for N2O removal than non-noble mixed oxide catalysts, which might broaden the application of low-temperature SCR of N2O by CO.
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Affiliation(s)
- Yanchen You
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Siyu Chen
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Jiayin Li
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Jie Zeng
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Huazhen Chang
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China.
| | - Lei Ma
- Department of Chemical Engineering, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Junhua Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC), School of Environment, Tsinghua University, Beijing 100084, China
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Bulk, Surface and Interface Promotion of Co3O4 for the Low-Temperature N2O Decomposition Catalysis. Catalysts 2019. [DOI: 10.3390/catal10010041] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Nanocrystalline cobalt spinel has been recognized as a very active catalytic material for N2O decomposition. Its catalytic performance can be substantially modified by proper doping with alien cations with precise control of their loading and location (spinel surface, bulk, and spinel-dopant interface). Various doping scenarios for a rational design of the optimal catalyst for low-temperature N2O decomposition are analyzed in detail and the key reactivity descriptors are identified (content and topological localization of dopants, their redox vs. non-redox nature and catalyst work function). The obtained results are discussed in the broader context of the available literature data to establish general guidelines for the rational design of the N2O decomposition catalyst based on a cobalt spinel platform.
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Wang W, Chen JQ, Tao YR, Zhu SN, Zhang YX, Wu XC. Flowerlike Ag-Supported Ce-Doped Mn3O4 Nanosheet Heterostructure for a Highly Efficient Oxygen Reduction Reaction: Roles of Metal Oxides in Ag Surface States. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04943] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Wei Wang
- Key Laboratory of Mesoscopic Chemistry of MOE, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Jin-Qiang Chen
- Key Laboratory of Mesoscopic Chemistry of MOE, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - You-Rong Tao
- Key Laboratory of Mesoscopic Chemistry of MOE, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Sai-Nan Zhu
- Key Laboratory of Mesoscopic Chemistry of MOE, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Yan-Xin Zhang
- Key Laboratory of Mesoscopic Chemistry of MOE, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Xing-Cai Wu
- Key Laboratory of Mesoscopic Chemistry of MOE, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, People’s Republic of China
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11
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Elucidation of Unexpectedly Weak Catalytic Effect of Doping with Cobalt of the Cryptomelane and Birnessite Systems Active in Soot Combustion. Top Catal 2019. [DOI: 10.1007/s11244-019-01132-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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12
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Must the Best Laboratory Prepared Catalyst Also Be the Best in an Operational Application? Catalysts 2019. [DOI: 10.3390/catal9020160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Three cobalt mixed oxide deN2O catalysts, with optimal content of alkali metals (K, Cs), were prepared on a large scale, shaped into tablets, and tested in a pilot plant reactor connected to the bypassed tail gas from the nitric production plant, downstream from the selective catalytic reduction of NOx by ammonia (SCR NOx/NH3) catalyst. High efficiency in N2O removal (N2O conversion of 75–90% at 450 °C, VHSV = 11,000 m3 mbed−3 h−1) was achieved. However, a different activity order of the commercially prepared catalyst tablets compared to the laboratory prepared catalyst grains was observed. Catalytic experiments in the kinetic regime using laboratory and commercial prepared catalysts and characterization methods (XRD, TPR-H2, physisorption, and chemical analysis) were utilized to explain this phenomenon. Experimentally determined internal effectiveness factors and their general dependency on kinetic constants were evaluated to discuss the relationship between the catalyst activity in the kinetic regime and the internal diffusion limitation in catalyst tablets as well as their morphology. The theoretical N2O conversion as a function of the intrinsic kinetic constants and diffusion rate, expressed as effective diffusion coefficients, was evaluated to estimate the final catalyst performance on a large scale and to answer the question of the above article title.
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Ji J, Fang Y, He L, Huang H. Efficient catalytic removal of airborne ozone under ambient conditions over manganese oxides immobilized on carbon nanotubes. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00762h] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
MnOx–CNT nanocomposites are efficient towards ozone decomposition owing to the electron transfer from the CNTs to MnOx that facilitates the activation of ozone.
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Affiliation(s)
- Jian Ji
- School of Environmental Science and Engineering
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Yang Fang
- School of Environmental Science and Engineering
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Linsong He
- School of Environmental Science and Engineering
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Haibao Huang
- School of Environmental Science and Engineering
- Sun Yat-sen University
- Guangzhou 510006
- China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology
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Effect of Residual Na+ on the Combustion of Methane over Co3O4 Bulk Catalysts Prepared by Precipitation. Catalysts 2018. [DOI: 10.3390/catal8100427] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The effect of the presence of residual sodium (0.4 %wt) over a Co3O4 bulk catalyst for methane combustion was studied. Two samples, with and without residual sodium, were synthesized by precipitation and thoroughly characterised by X-ray diffraction (XRD), N2 physisorption, Wavelength Dispersive X-ray Fluorescence (WDXRF), temperature-programmed reduction with hydrogen followed by temperature-programmed reduction with oxygen (H2-TPR/O2-TPO), temperature-programmed reaction with methane (CH4-TPRe), ultraviolet–visible–near-infrared diffuse reflectance spectroscopy (UV-vis-NIR DRS), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). It was found that during calcination, a fraction of the sodium atoms initially deposited on the surface diffused and migrated into the spinel lattice, inducing a distortion that improved its textural and structural properties. However, surface sodium had an overall negative impact on the catalytic activity. It led to a reduction of surface Co3+ ions in favour of Co2+, thus ultimately decreasing the Co3+/Co2+ molar ratio (from 1.96 to 1.20) and decreasing the amount and mobility of active lattice oxygen species. As a result, the catalyst with residual sodium (T90 = 545 °C) was notably less active than its clean counterpart (T90 = 500 °C). All of this outlined the significance of a proper washing when synthesizing Co3O4 catalyst using a sodium salt as the precipitating agent.
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Effect of preparation parameters on the catalytic performance of hydrothermally synthesized Co 3 O 4 in the decomposition of N 2 O. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/s1872-5813(18)30031-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Wójcik S, Grzybek G, Gryboś J, Kotarba A, Sojka Z. Designing, optimization and performance evaluation of the K-Zn0.4Co2.6O4|α-Al2O3|cordierite catalyst for low-temperature N2O decomposition. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.03.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Lykaki M, Papista E, Carabineiro SAC, Tavares PB, Konsolakis M. Optimization of N2O decomposition activity of CuO–CeO2 mixed oxides by means of synthesis procedure and alkali (Cs) promotion. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00316e] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fine-tuning of CuO–CeO2 mixed oxides by means of synthesis procedure (co-precipitation) and alkali promotion (1.0 at Cs per nm2) towards highly active deN2O catalysts is demonstrated.
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Affiliation(s)
- Maria Lykaki
- School of Production Engineering and Management
- Technical University of Crete
- GR-73100 Chania
- Greece
| | - Eleni Papista
- Department of Mechanical Engineering
- University of Western Macedonia
- GR-50100 Kozani
- Greece
| | - Sónia A. C. Carabineiro
- Laboratório de Catálise e Materiais (LCM)
- Laboratório Associado LSRE-LCM
- Faculdade de Engenharia
- Universidade do Porto
- 4200-465 Porto
| | - Pedro B. Tavares
- CQVR Centro de Química – Vila Real
- Departamento de Química
- Universidade de Trás-os-Montes e Alto Douro
- 5001-801 Vila Real
- Portugal
| | - Michalis Konsolakis
- School of Production Engineering and Management
- Technical University of Crete
- GR-73100 Chania
- Greece
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Effect of precipitants on the catalytic activity of Co–Ce composite oxide for N2O catalytic decomposition. REACTION KINETICS MECHANISMS AND CATALYSIS 2017. [DOI: 10.1007/s11144-017-1293-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Cobalt oxide catalysts supported on CeO2–TiO2 for ethanol oxidation and N2O decomposition. REACTION KINETICS MECHANISMS AND CATALYSIS 2017. [DOI: 10.1007/s11144-017-1142-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Si C, Zhang J, Wang Y, Ma W, Gao H, Lv L, Zhang Z. Nanoporous Platinum/(Mn,Al) 3O 4 Nanosheet Nanocomposites with Synergistically Enhanced Ultrahigh Oxygen Reduction Activity and Excellent Methanol Tolerance. ACS APPLIED MATERIALS & INTERFACES 2017; 9:2485-2494. [PMID: 28054484 DOI: 10.1021/acsami.6b13840] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
At present, metal/metal oxide composites are considered as potential oxygen reduction reaction (ORR) catalysts for energy-related applications like fuel cells. Here, we fabricated a high-activity, low Pt loading ORR electrocatalyst composed of nanoporous Pt (np-Pt) in intimate contact with lamellar (Mn,Al)3O4 nanosheet (NS). In comparison to Pt/C (Johnson Matthey), the np-Pt/(Mn,Al)3O4 NS catalyst shows a 11.5-fold enhancement in the mass-normalized ORR activity and much better methanol tolerance because of the metal-support interactions between np-Pt and (Mn,Al)3O4. Furthermore, the combination of electrochemical experiments with theoretical calculations verifies that the ORR on the np-Pt/(Mn,Al)3O4 NS catalyst is a direct 4e- pathway in the alkaline solution. In addition, the electrocatalytic mechanisms have also been rationalized by density functional theory (DFT) calculations.
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Affiliation(s)
- Conghui Si
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China
| | - Jie Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China
| | - Ying Wang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China
| | - Wensheng Ma
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China
| | - Hui Gao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China
| | - Lanfen Lv
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China
| | - Zhonghua Zhang
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University , Jingshi Road 17923, Jinan 250061, P. R. China
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Klyushina A, Pacultová K, Karásková K, Jirátová K, Ritz M, Fridrichová D, Volodarskaja A, Obalová L. Effect of preparation method on catalytic properties of Co-Mn-Al mixed oxides for N2O decomposition. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.10.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abu-Zied BM, Asiri AM. The role of alkali promoters in enhancing the direct N2O decomposition reactivity over NiO catalysts. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(15)60963-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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24
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Grzybek G, Stelmachowski P, Indyka P, Inger M, Wilk M, Kotarba A, Sojka Z. Cobalt–zinc spinel dispersed over cordierite monoliths for catalytic N2O abatement from nitric acid plants. Catal Today 2015. [DOI: 10.1016/j.cattod.2015.02.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Chromčáková Ž, Obalová L, Kovanda F, Legut D, Titov A, Ritz M, Fridrichová D, Michalik S, Kuśtrowski P, Jirátová K. Effect of precursor synthesis on catalytic activity of Co3O4 in N2O decomposition. Catal Today 2015. [DOI: 10.1016/j.cattod.2015.03.030] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Konsolakis M. Recent Advances on Nitrous Oxide (N2O) Decomposition over Non-Noble-Metal Oxide Catalysts: Catalytic Performance, Mechanistic Considerations, and Surface Chemistry Aspects. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01605] [Citation(s) in RCA: 230] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michalis Konsolakis
- School of Production Engineering
and Management, Technical University of Crete, GR−73100 Chania, Crete Greece
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27
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Park SA, Lim H, Kim YT. Enhanced Oxygen Reduction Reaction Activity Due to Electronic Effects between Ag and Mn3O4 in Alkaline Media. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00495] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shin-Ae Park
- School
of Mechanical Engineering, Pusan National University, Busan 609-735, Republic of Korea
| | - Hankwon Lim
- Department
of Chemical Systematic Engineering, Catholic University of Daegu, Daegu 712-702, Republic of Korea
| | - Yong-Tae Kim
- School
of Mechanical Engineering, Pusan National University, Busan 609-735, Republic of Korea
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28
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Chromčáková Ž, Obalová L, Kustrowski P, Drozdek M, Karásková K, Jirátová K, Kovanda F. Optimization of Cs content in Co–Mn–Al mixed oxide as catalyst for N2O decomposition. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2008-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Inger M, Wilk M, Saramok M, Grzybek G, Grodzka A, Stelmachowski P, Makowski W, Kotarba A, Sojka Z. Cobalt Spinel Catalyst for N2O Abatement in the Pilot Plant Operation–Long-Term Activity and Stability in Tail Gases. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5014579] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marek Inger
- Fertilizers Research Institute, Al.
Tysiąclecia Państwa Polskiego 13A, 24-110 Puławy, Poland
| | - Marcin Wilk
- Fertilizers Research Institute, Al.
Tysiąclecia Państwa Polskiego 13A, 24-110 Puławy, Poland
| | - Magdalena Saramok
- Fertilizers Research Institute, Al.
Tysiąclecia Państwa Polskiego 13A, 24-110 Puławy, Poland
| | - Gabriela Grzybek
- Faculty
of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30-060 Krakow, Poland
| | - Anna Grodzka
- Faculty
of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30-060 Krakow, Poland
| | - Paweł Stelmachowski
- Faculty
of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30-060 Krakow, Poland
| | - Wacław Makowski
- Faculty
of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30-060 Krakow, Poland
| | - Andrzej Kotarba
- Faculty
of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30-060 Krakow, Poland
| | - Zbigniew Sojka
- Faculty
of Chemistry, Jagiellonian University in Krakow, Ingardena 3, 30-060 Krakow, Poland
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30
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Kang M, Kim JH, Yang W, Jung H. Synthesis and Characterization of Mn3O4-Graphene Nanocomposite thin Film by an ex situ Approach. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.4.1067] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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Role of Electronic Factor in Soot Oxidation Process Over Tunnelled and Layered Potassium Iron Oxide Catalysts. Top Catal 2013. [DOI: 10.1007/s11244-013-0003-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Maniak G, Stelmachowski P, Stanek JJ, Kotarba A, Sojka Z. Catalytic properties in N2O decomposition of mixed cobalt–iron spinels. CATAL COMMUN 2011. [DOI: 10.1016/j.catcom.2011.08.027] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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