1
|
Efficient enhancement of the anti-KCl-poisoning performance for V2O5-WO3/TiO2 catalysts by Ce(SO4)2 modification. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
2
|
Jiang Z, Wang Q, Cai Y. Enhanced Catalytic Activity and SO2/H2O Tolerance for Selective Catalytic Reduction of NOx with NH3 over Titanate Nanotubes Supported MnOx–CeO2 Catalyst at Low Temperature. CATALYSIS SURVEYS FROM ASIA 2022. [DOI: 10.1007/s10563-022-09356-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
3
|
do Carmo JVC, Lima CL, Mota G, Santos AMS, Costa LN, Ghosh A, Viana BC, Silva M, Soares JM, Tehuacanero-Cuapa S, Lang R, Oliveira AC, Rodríguez-Castellón E, Rodríguez-Aguado E. Effects of the Incorporation of Distinct Cations in Titanate Nanotubes on the Catalytic Activity in NO x Conversion. MATERIALS 2021; 14:ma14092181. [PMID: 33923161 PMCID: PMC8123014 DOI: 10.3390/ma14092181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/14/2021] [Accepted: 04/16/2021] [Indexed: 11/29/2022]
Abstract
Effects of the incorporation of Cr, Ni, Co, Ag, Al, Ni and Pt cations in titanate nanotubes (NTs) were examined on the NOx conversion. The structural and morphological characterizations evidenced that the ion-exchange reaction of Cr, Co, Ni and Al ions with the NTs produced catalysts with metals included in the interlayer regions of the trititanate NTs whereas an assembly of Ag and Pt nanoparticles were either on the nanotubes surface or inner diameters through an impregnation process. Understanding the role of the different metal cations intercalated or supported on the nanotubes, the optimal selective catalytic reduction of NOx by CO reaction (SCR) conditions was investigated by carrying out variations in the reaction temperature, SO2 and H2O poisoning and long-term stability runs. Pt nanoparticles on the NTs exhibited superior activity compared to the Cr, Co and Al intercalated in the nanotubes and even to the Ag and Ni counterparts. Resistance against SO2 poisoning was low on NiNT due to the trititanate phase transformation into TiO2 and also to sulfur deposits on Ni sites. However, the interaction between Pt2+ from PtOx and Ti4+ in the NTs favored the adsorption of both NOx and CO enhancing the catalytic performance.
Collapse
Affiliation(s)
- José Vitor C. do Carmo
- Department of Analytical and Chemical-Physic Chemistry, Pici Campus-Block 940, Federal University of Ceará, Fortaleza 60040-531, Brazil; (J.V.C.d.C.); (G.M.)
| | - Cleanio L. Lima
- Material Science and Engineering & Physics Department, Federal University of Piauí, Teresina 64049-550, Brazil; (C.L.L.); (A.M.S.S.); (L.N.C.); (A.G.); (B.C.V.)
| | - Gabriela Mota
- Department of Analytical and Chemical-Physic Chemistry, Pici Campus-Block 940, Federal University of Ceará, Fortaleza 60040-531, Brazil; (J.V.C.d.C.); (G.M.)
| | - Ariane M. S. Santos
- Material Science and Engineering & Physics Department, Federal University of Piauí, Teresina 64049-550, Brazil; (C.L.L.); (A.M.S.S.); (L.N.C.); (A.G.); (B.C.V.)
| | - Ludyane N. Costa
- Material Science and Engineering & Physics Department, Federal University of Piauí, Teresina 64049-550, Brazil; (C.L.L.); (A.M.S.S.); (L.N.C.); (A.G.); (B.C.V.)
| | - Anupama Ghosh
- Material Science and Engineering & Physics Department, Federal University of Piauí, Teresina 64049-550, Brazil; (C.L.L.); (A.M.S.S.); (L.N.C.); (A.G.); (B.C.V.)
| | - Bartolomeu C. Viana
- Material Science and Engineering & Physics Department, Federal University of Piauí, Teresina 64049-550, Brazil; (C.L.L.); (A.M.S.S.); (L.N.C.); (A.G.); (B.C.V.)
| | - Monique Silva
- Fortaleza Campus, Federal Institute of Education—IFCE, Av. 13 de Maio, 2081, Benfica, Fortaleza 60040-531, Brazil;
| | - João M. Soares
- Physics Department, State University of Rio Grande do Norte-UERN, BR 110-km 48, R. Prof. Antônio Campos, Costa e Silva, Mossoró 59610-210, Brazil;
| | - Samuel Tehuacanero-Cuapa
- Central Microscopy Laboratory, Physics Institute—UNAM, Research Circuit s/n, University City, Coyoacán, Mexico City 04510, Mexico;
| | - Rossano Lang
- Institute of Science and Technology—ICT, Federal University of São Paulo—UNIFESP, São José dos Campos 12231-280, Brazil;
| | - Alcineia C. Oliveira
- Department of Analytical and Chemical-Physic Chemistry, Pici Campus-Block 940, Federal University of Ceará, Fortaleza 60040-531, Brazil; (J.V.C.d.C.); (G.M.)
- Correspondence: (A.C.O.); (E.R.-C.)
| | - Enrique Rodríguez-Castellón
- Department of Inorganic Chemistry, Faculty of Science, University of Málaga, 29071 Málaga, Spain;
- Correspondence: (A.C.O.); (E.R.-C.)
| | - Elena Rodríguez-Aguado
- Department of Inorganic Chemistry, Faculty of Science, University of Málaga, 29071 Málaga, Spain;
| |
Collapse
|
4
|
Fei X, Wang P, Zhang D, Wang H, Wu Z. Confined Catalysts Application in Environmental Catalysis: Current Research Progress and Future Prospects. ChemCatChem 2021. [DOI: 10.1002/cctc.202001578] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Xiaoqi Fei
- Key Laboratory of Environment Remediation and Ecological Health Ministry of Education College of Environmental & Resources Science Zhejiang University Hangzhou 310058 P.R. China
- Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control Hangzhou 310058 P. R. China
| | - Penglu Wang
- International Joint Laboratory of Catalytic Chemistry Department of Chemistry Research Center of Nano Science and Technology College of Sciences Shanghai University Shanghai 200444 P. R. China
| | - Dengsong Zhang
- International Joint Laboratory of Catalytic Chemistry Department of Chemistry Research Center of Nano Science and Technology College of Sciences Shanghai University Shanghai 200444 P. R. China
| | - Haiqiang Wang
- Key Laboratory of Environment Remediation and Ecological Health Ministry of Education College of Environmental & Resources Science Zhejiang University Hangzhou 310058 P.R. China
- Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control Hangzhou 310058 P. R. China
| | - Zhongbiao Wu
- Key Laboratory of Environment Remediation and Ecological Health Ministry of Education College of Environmental & Resources Science Zhejiang University Hangzhou 310058 P.R. China
- Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control Hangzhou 310058 P. R. China
| |
Collapse
|
5
|
Recent Progress on Improving Low-Temperature Activity of Vanadia-Based Catalysts for the Selective Catalytic Reduction of NOx with Ammonia. Catalysts 2020. [DOI: 10.3390/catal10121421] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Selective catalytic reduction of NOx with NH3 (NH3-SCR) has been successfully applied to abate NOx from diesel engines and coal-fired industries on a large scale. Although V2O5-WO3(MoO3)/TiO2 catalysts have been utilized in commercial applications, novel vanadia-based catalysts have been recently developed to meet the increasing requirements for low-temperature catalytic activity. In this article, recent progress on the improvement of the low-temperature activity of vanadia-based catalysts is reviewed, including modification with metal oxides and nonmetal elements and the use of novel supports, different synthesis methods, metal vanadates and specific structures. Investigation of the NH3-SCR reaction mechanism, especially at low temperatures, is also emphasized. Finally, for low-temperature NH3-SCR, some suggestions are given regarding the opportunities and challenges of vanadia-based catalysts in future research.
Collapse
|
6
|
Cai S, Xu T, Wang P, Han L, Impeng S, Li Y, Yan T, Chen G, Shi L, Zhang D. Self-Protected CeO 2-SnO 2@SO 42-/TiO 2 Catalysts with Extraordinary Resistance to Alkali and Heavy Metals for NO x Reduction. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:12752-12760. [PMID: 32877168 DOI: 10.1021/acs.est.0c04911] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Reducing the poisoning effect of alkali and heavy metals over ammonia selective catalytic reduction (NH3-SCR) catalysts is still an intractable issue, as the presence of K and Pb in fly ash greatly hampers their catalytic activity by impairing the acidity and affecting the redox properties of the catalysts, leading to the reduction in the lifetime of SCR catalysts. To address this issue, we propose a novel self-protected antipoisoning mechanism by designing SO42-/TiO2 superacid supported CeO2-SnO2 catalysts. Owing to the synergistic effect between CeO2 and SnO2 and the strong acidity originating from the SO42-/TiO2 superacid, the catalysts show superior catalytic activity over a wide temperature range (240-510 °C). Moreover, when K or/and Pb are deposited on SO42-/TiO2 catalysts, the bond effect between SO42- and Ti-O would be broken so that the sulfate in the bulk of SO42-/TiO2 superacid support would be induced to migrate to the surface to bond with K and Pb, thus prohibiting poisons from attacking the Ce-Sn active sites, and significantly boosting the resistance. Hopefully, this novel self-protection mechanism derived from the migration of sulfate in the SO42-/TiO2 superacid to resist alkali and heavy metals provides a new avenue for designing novel catalysts with outstanding resistance to alkali and heavy metals.
Collapse
Affiliation(s)
- Sixiang Cai
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, Haikou 570228, Hainan, China
| | - Tuoyu Xu
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, Haikou 570228, Hainan, China
| | - Penglu Wang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Lupeng Han
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Sarawoot Impeng
- National Nanotechnology Center, National Science and Technology Development Agency, Pathum Thani 12120, Thailand
| | - Yue Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, Haikou 570228, Hainan, China
| | - Tingting Yan
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Guorong Chen
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Liyi Shi
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| | - Dengsong Zhang
- International Joint Laboratory of Catalytic Chemistry, Department of Chemistry, Research Center of Nano Science and Technology, College of Sciences, Shanghai University, Shanghai 200444, China
| |
Collapse
|
7
|
Nanosized V-Ce Oxides Supported on TiO2 as a Superior Catalyst for the Selective Catalytic Reduction of NO. Catalysts 2020. [DOI: 10.3390/catal10020202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Nanosized V-Ce oxides supported on TiO2 (VCT) were prepared and utilized in the low-temperature selective catalytic reduction (SCR) of NO with NH3. Compared with the other V-Ce oxides-based catalysts supported on Al2O3, ZrO2, and ZSM-5, VCT showed the best SCR activity in a low-temperature range. The NOx conversion of 90% could be achieved at 220 °C. Characterizations including X-ray diffraction (XRD), scanning election micrograph (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), temperature-programmed desorption with NH3 (NH3-TPD), and temperature-programmed reduction with H2 (H2-TPR) showed that V1.05Ce1/TiO2 exhibited a good dispersion of V2O5, enrichment of surface Ce3+ and chemical-absorbed oxygen, and excellent redox capacity and acidity, which resulted in the best SCR performance at low temperature.
Collapse
|
8
|
Lian Z, Xin S, Zhu N, Wang Q, Xu J, Zhang Y, Shan W, He H. Effect of treatment atmosphere on the vanadium species of V/TiO2 catalysts for the selective catalytic reduction of NOx with NH3. Catal Sci Technol 2020. [DOI: 10.1039/c9cy01888c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The decrease of polymeric vanadyl species due to treatment under different atmospheres results in the reduction of NH3-SCR activity.
Collapse
Affiliation(s)
- Zhihua Lian
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment
- Chinese Academy of Sciences
- Xiamen 361021
- China
| | - Shaohui Xin
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
- Wuhan 430071
- China
| | - Na Zhu
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment
- Chinese Academy of Sciences
- Xiamen 361021
- China
| | - Qiang Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
- Wuhan 430071
- China
| | - Jun Xu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics
- Wuhan Institute of Physics and Mathematics
- Chinese Academy of Sciences
- Wuhan 430071
- China
| | - Yan Zhang
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment
- Chinese Academy of Sciences
- Xiamen 361021
- China
| | - Wenpo Shan
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment
- Chinese Academy of Sciences
- Xiamen 361021
- China
| | - Hong He
- Center for Excellence in Regional Atmospheric Environment and Key Laboratory of Urban Pollutant Conversion
- Institute of Urban Environment
- Chinese Academy of Sciences
- Xiamen 361021
- China
| |
Collapse
|
9
|
Zheng T, Wang T, Ma R, Liu W, Cui F, Sun W. Influences of isolated fractions of natural organic matter on adsorption of Cu(II) by titanate nanotubes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:1412-1418. [PMID: 30308828 DOI: 10.1016/j.scitotenv.2018.09.152] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/29/2018] [Accepted: 09/11/2018] [Indexed: 06/08/2023]
Abstract
With different functional groups and hydrophobic/hydrophilic properties, natural organic matters (NOMs) displayed different combining capacities with metal ions. By using XAD-4 and DAX-8 resins, NOMs in natural lake were isolated into three fractions, i.e., HoB (hydrophobic base), HoA (hydrophobic acid) and HiM (hydrophilic matter). Afterwards, influences on Cu(II) adsorption onto titanate nanotubes (TNTs) were compared with varying NOMs and initial pH. As results, HoB can significantly control Cu(II) adsorption at pH 5, with the adsorption capacity increased 15% for 0.5 mg L-1 of HoB (ca. 120 mg g-1), which could be attributed to the formation of HoB-Cu complexation and electrostatic bridge effect of HoB with optimal concentration. Due to the easier ionization and complexation with Cu(II) at lower pH, HoA showed more obvious impaction on Cu(II) adsorption at pH 2. While HiM can influence Cu(II) adsorption at all pH ranges due to its hydrophilic groups and weak affinity to both TNTs and Cu(II). Furthermore, HoB dramatically changed the Langmuir model, with sharp increase of adsorption capacity as equilibrium Cu(II) increased, suggesting its significant involvement in Cu(II) adsorption. X-ray photoelectron spectroscopy (XPS) analysis revealed the absorbed Cu(II) existed in the form of TNTs‑OCu, TNTs‑COOCu and Cu(OH)2, proving Cu(II) adsorption mechanism including both direct adsorption by TNTs and bridging connection with NOMs. Moreover, the CO and OCO groups content ranked as HiM > HoB > HoA, while TNTs‑COOCu content ranked as HoA > HoB > HiM, suggesting HoB had the moderate connection with both TNTs and Cu(II), thus the impact on Cu(II) adsorption was remarkable.
Collapse
Affiliation(s)
- Tong Zheng
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China
| | - Ting Wang
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
| | - Ruoqi Ma
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China
| | - Wen Liu
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China; Beijing Innovation Center for Engineering Science and Advanced Technology, Peking University, Beijing 100871, China
| | - Feng Cui
- Shenzhen Gaia Environmental Sci-Tech Co. Ltd., Shenzhen 518055, China
| | - Weiliang Sun
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| |
Collapse
|
10
|
Xie B, Luo H, Tang Q, Du J, Liu Z, Tao C. The black rock series supported SCR catalyst for NO x removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:21761-21769. [PMID: 28766147 DOI: 10.1007/s11356-017-9622-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 06/23/2017] [Indexed: 06/07/2023]
Abstract
Black rock series (BRS) is of great potential for their plenty of valued oxides which include vanadium, iron, alumina and silica oxides, etc. BRS was used for directly preparing of selective catalytic reduction (SCR) catalyst by modifying its surface texture with SiO2-TiO2 sols and regulating its catalytic active constituents with V2O5 and MoO3. Consequently, 90% NO removal ratio was obtained within 300-400 °C over the BRS-based catalyst. The structure and properties of the BRS-based catalyst were characterized by the techniques of N2 adsorption-desorption, X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), H2-temperature programmed reduction (H2-TPR), and NH3-temperature programmed desorption (NH3-TPD). The results revealed that the BRS-based catalyst possesses favorable properties for NO x removal, including highly dispersed active components, abundant surface-adsorbed oxygen Oα, well redox property, and numerous Brønsted acid sites. Particularly, the BRS-based catalyst exhibited considerable anti-poisoning performance compared with commercial TiO2-based catalyst. The former catalyst shows a NO conversion surpassing 80% from 300 to 400 °C for potassium poisoning, and a durability of SO2 and H2O exceeding 85% at temperatures from 300 to 450 °C.
Collapse
Affiliation(s)
- Bin Xie
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering (Chongqing), Chongqing University, Chongqing, 400044, China
| | - Hang Luo
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering (Chongqing), Chongqing University, Chongqing, 400044, China
| | - Qing Tang
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering (Chongqing), Chongqing University, Chongqing, 400044, China
| | - Jun Du
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering (Chongqing), Chongqing University, Chongqing, 400044, China.
| | - Zuohua Liu
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering (Chongqing), Chongqing University, Chongqing, 400044, China
| | - Changyuan Tao
- Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of Chemistry and Chemical Engineering (Chongqing), Chongqing University, Chongqing, 400044, China.
| |
Collapse
|