1
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Bjerregaard JD, Han J, Creaser D, Olsson L, Grönbeck H. Interpretation of H 2-TPR from Cu-CHA Using First-Principles Calculations. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:4525-4534. [PMID: 38533243 PMCID: PMC10962680 DOI: 10.1021/acs.jpcc.3c07998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/26/2024] [Accepted: 02/28/2024] [Indexed: 03/28/2024]
Abstract
Temperature-programmed reduction and oxidation are used to obtain information on the presence and abundance of different species in complex catalytic materials. The interpretation of the temperature-programmed reaction profiles is, however, often challenging. One example is H2 temperature-programmed reduction (H2-TPR) of Cu-chabazite (Cu-CHA), which is a material used for ammonia assisted selective catalytic reduction of NOx (NH3-SCR). The TPR profiles of Cu-CHA consist generally of three main peaks. A peak at 220 °C is commonly assigned to ZCuOH, whereas peaks at 360 and 500 °C generally are assigned to Z2Cu, where Z represents an Al site. Here, we analyze H2-TPR over Cu-CHA by density functional theory calculations, microkinetic modeling, and TPR measurements of samples pretreated to have a dominant Cu species. We find that H2 can react with Cu ions in oxidation state +2, whereas adsorption on Cu ions in +1 is endothermic. Kinetic modeling of the TPR profiles suggests that the 220 °C peak can be assigned to Z2CuOCu and ZCuOH, whereas the peaks at higher temperatures can be assigned to paired Z2Cu and Z2CuHOOHCu species (360 °C) or paired Z2Cu and Z2CuOOCu (500 °C). The results are in good agreement with the experiments and facilitate the interpretation of future TPR experiments.
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Affiliation(s)
- Joachim D. Bjerregaard
- Department
of Physics and Competence Centre for Catalysis, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - Joonsoo Han
- Chemical
Engineering and Competence Centre for Catalysis, Chalmers University of Technology, SE 412 96 Göteborg, Sweden
| | - Derek Creaser
- Chemical
Engineering and Competence Centre for Catalysis, Chalmers University of Technology, SE 412 96 Göteborg, Sweden
| | - Louise Olsson
- Chemical
Engineering and Competence Centre for Catalysis, Chalmers University of Technology, SE 412 96 Göteborg, Sweden
| | - Henrik Grönbeck
- Department
of Physics and Competence Centre for Catalysis, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
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2
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Yu J, Iyoki K, Elangovan SP, Fujinuma H, Okubo T, Wakihara T. Unexpected Low Temperature Activity with Low N 2 O Emission of Stabilized Al-rich Zeolite Beta for Selective Catalytic Reduction of NO x. Chemistry 2023:e202303177. [PMID: 38095051 DOI: 10.1002/chem.202303177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Indexed: 12/23/2023]
Abstract
The low temperature activity of Fe-loaded zeolites as selective catalytic reduction of NOx by NH3 (NH3 -SCR) catalysts is a critical drawback for practical application. Here, we found unexpected improvement of low temperature activity by our proposed post-synthetic treatment. An Al-rich zeolite beta (Si/Al=5) is employed as the catalyst support, and the parent sample is dealuminated for higher hydrothermal stability, followed by the liquid-mediated stabilization treatment and impregnation. It is found that stabilized samples feature excellent low temperature activity and high N2 selectivity even for a long-term operation, along with the ability to maintain high NOx conversion after aging. The improved SCR activity should be attributed to abundant acid sites in Al-rich framework and better stabilization of monomeric iron species after the stabilization treatment. Furthermore, the low yield of side product N2 O is probably due to the absence of the generation of NH4 NO3 during NH3 -SCR catalyzed by Fe-loaded zeolites.
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Affiliation(s)
- Jingyun Yu
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo, 113-8656, Japan
| | - Kenta Iyoki
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo, 113-8656, Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), Kawaguchi, Saitama, 332-0012, Japan
| | - Shanmugam P Elangovan
- Institute of Engineering Innovation, The University of Tokyo, 2-11-16 Yayoi, Bunkyo, Tokyo, 113-8656, Japan
| | - Haruko Fujinuma
- Institute of Engineering Innovation, The University of Tokyo, 2-11-16 Yayoi, Bunkyo, Tokyo, 113-8656, Japan
| | - Tatsuya Okubo
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo, 113-8656, Japan
| | - Toru Wakihara
- Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo, 113-8656, Japan
- Institute of Engineering Innovation, The University of Tokyo, 2-11-16 Yayoi, Bunkyo, Tokyo, 113-8656, Japan
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3
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Jabłońska M, Palčić A, Lukman MF, Wach A, Bertmer M, Poppitz D, Denecke R, Wu X, Simon U, Pöppl A, Gläser R. OSDA-Free Seeded Cu-Containing ZSM-5 Applied for NH 3-SCR-DeNO x. ACS OMEGA 2023; 8:41107-41119. [PMID: 37970047 PMCID: PMC10633853 DOI: 10.1021/acsomega.3c03721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 09/06/2023] [Indexed: 11/17/2023]
Abstract
A series of ZSM-5 zeolite materials were synthesized from organic structure-directing agent (OSDA)-free seeded systems, including nanosized silicalite-1 (12 wt % water suspension or in powder form) or nanosized ZSM-5 (powder form of ZSM-5 prepared at 100 or 170 °C). The physicochemical characterization revealed aggregated species in the samples based on silicalite-1. Contrarily, the catalysts based on ZSM-5 seeds revealed isolated copper species, and thus, higher NO conversion during the selective catalytic reduction of NOx with NH3 (NH3-SCR-DeNOx) was observed. Furthermore, a comparison of the Cu-containing ZSM-5 catalysts, conventionally prepared in the presence of OSDAs and prepared with an environmentally more benign approach (without OSDAs), revealed their comparable activity in NH3-SCR-DeNOx.
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Affiliation(s)
- Magdalena Jabłońska
- Institute
of Chemical Technology, Universität
Leipzig, Linnéstr. 3, 04103 Leipzig, Germany
| | - Ana Palčić
- Laboratory
for the Synthesis of New Materials, Division of Materials Chemistry,
Rud̵er Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
| | - Muhammad Fernadi Lukman
- Felix
Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany
| | - Anna Wach
- PSI,
Forschungsstrasse 111, 5232 Villigen, Switzerland
| | - Marko Bertmer
- Felix
Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany
| | - David Poppitz
- Institute
of Chemical Technology, Universität
Leipzig, Linnéstr. 3, 04103 Leipzig, Germany
| | - Reinhard Denecke
- Wilhelm-Ostwald-Institute
for Physical and Theoretical Chemistry, Universität Leipzig, Linnéstr. 2, D-04103 Leipzig, Germany
| | - Xiaochao Wu
- Institute
of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany
| | - Ulrich Simon
- Institute
of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1a, 52074 Aachen, Germany
| | - Andreas Pöppl
- Felix
Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany
| | - Roger Gläser
- Institute
of Chemical Technology, Universität
Leipzig, Linnéstr. 3, 04103 Leipzig, Germany
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4
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Fernandes Pape Brito JC, Miletto I, Marchese L, Ali D, Azim MM, Mathisen K, Gianotti E. Hierarchical SAPO-34 Catalysts as Host for Cu Active Sites. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5694. [PMID: 37629985 PMCID: PMC10456513 DOI: 10.3390/ma16165694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/13/2023] [Accepted: 08/16/2023] [Indexed: 08/27/2023]
Abstract
Cu-containing hierarchical SAPO-34 catalysts were synthesized by the bottom-up method using different mesoporogen templates: CTAB encapsulated within ordered mesoporous silica nanoparticles (MSNs) and sucrose. A high fraction of the Cu centers exchanged in the hierarchical SAPO-34 architecture with high mesopore surface area and volume was achieved when CTAB was embedded within ordered mesoporous silica nanoparticles. Physicochemical characterization was performed by using structural and spectroscopic techniques to elucidate the properties of hierarchical SAPO-34 before and after Cu introduction. The speciation of the Cu sites, investigated by DR UV-Vis, and the results of the catalytic tests indicated that the synergy between the textural properties of the hierarchical SAPO-34 framework, the high Cu loading, and the coordination and localization of the Cu sites in the hierarchical architecture is the key point to obtaining good preliminary results in the NO selective catalytic reduction with hydrocarbons (HC-SCR).
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Affiliation(s)
- Julio C. Fernandes Pape Brito
- Department for Sustainable Development and Ecological Transition, Università del Piemonte Orientale, Piazza Sant’Eusebio 5, 13100 Vercelli, Italy
| | - Ivana Miletto
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Leonardo Marchese
- Department of Science and Technological Innovation, Università del Piemonte Orientale, Via T. Michel 11, 15100 Alessandria, Italy;
| | - Daniel Ali
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Muhammad Mohsin Azim
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Karina Mathisen
- Department of Chemistry, Norwegian University of Science and Technology (NTNU), 7491 Trondheim, Norway
| | - Enrica Gianotti
- Department for Sustainable Development and Ecological Transition, Università del Piemonte Orientale, Piazza Sant’Eusebio 5, 13100 Vercelli, Italy
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5
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Wan J, Yang H, Shi Y, Liu Y, Zhang J, Zhang J, Wu G, Zhou R. Effect of Cu loading content on the catalytic performance of Cu-USY catalysts for selective catalytic reduction of NO with NH 3. J Environ Sci (China) 2023; 126:445-458. [PMID: 36503771 DOI: 10.1016/j.jes.2022.03.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 06/17/2023]
Abstract
Series of Cu-USY zeolite catalyst with different Cu loading content were synthesized through simple impregnation method. The obtained catalysts were subjected to selective catalytic reduction of NOx with NH3 (NH3-SCR) performance evaluation, structural/chemical characterizations such as X-ray diffraction (XRD), N2 adsorption/desorption, H2 temperature-programmed reduction (H2-TPR), NH3 temperature-programmed desorption (NH3-TPD) as well as detailed in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments including CO adsorption, NH3 adsorption and NO+O2 in situ reactions. Results show that Cu-USY with proper Cu loading (in this work 5Cu-USY with 5 wt.% Cu) could be promising candidates with highly efficient NH3-SCR catalytic performance, relatively low byproduct formation and excellent hydrothermal stability, although its SO2 poisoning tolerability needs alleviation. Further characterizations reveal that such catalytic advantages can be attributed to both active cu species and surface acid centers evolution modulated by Cu loading. On one hand, Cu species in the super cages of zeolites increases with higher Cu content and being more conducive for NH3-SCR reactivity. On the other hand, higher Cu loading leads to depletion of Brønsted acid centers and simultaneous formation of abundant Lewis acid centers, which facilitates NH4NO3 reduction via NH3 adsorbed on Lewis acid centers, thus improving SCR reactivity. However, Cu over-introduction leads to formation of surface highly dispersed CuOx, causing unfavorable NH3 oxidation and inferior N2 selectivity.
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Affiliation(s)
- Jie Wan
- Energy Research Institute, Nanjing Institute of Technology, Nanjing 211167, China; Institute of Catalysis, Zhejiang University, Hangzhou 310028, China
| | - Haipeng Yang
- Institute of Catalysis, Zhejiang University, Hangzhou 310028, China
| | - Yijun Shi
- Institute of Catalysis, Zhejiang University, Hangzhou 310028, China
| | - Yanjun Liu
- Institute of Catalysis, Zhejiang University, Hangzhou 310028, China
| | - Jin Zhang
- Energy Research Institute, Nanjing Institute of Technology, Nanjing 211167, China
| | - Jun Zhang
- Energy Research Institute, Nanjing Institute of Technology, Nanjing 211167, China
| | - Gongde Wu
- Energy Research Institute, Nanjing Institute of Technology, Nanjing 211167, China
| | - Renxian Zhou
- Institute of Catalysis, Zhejiang University, Hangzhou 310028, China.
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6
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In-situ One-Pot Synthesis of Ti/Cu-SSZ-13 Catalysts with Highly Efficient NH3-SCR Catalytic Performance as Well as Superior H2O/SO2 Tolerability. CATALYSIS SURVEYS FROM ASIA 2022. [DOI: 10.1007/s10563-022-09374-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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7
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Jabłońska M. Review of the application of Cu-containing SSZ-13 in NH 3-SCR-DeNO x and NH 3-SCO. RSC Adv 2022; 12:25240-25261. [PMID: 36199328 PMCID: PMC9450943 DOI: 10.1039/d2ra04301g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/23/2022] [Indexed: 11/21/2022] Open
Abstract
The reduction of NO x emissions has become one of the most important subjects in environmental protection. Cu-containing SSZ-13 is currently the state-of-the-art catalyst for the selective catalytic reduction of NO x with ammonia (NH3-SCR-DeNO x ). Although the current-generation catalysts reveal enhanced activity and remarkable hydrothermal stability, still open challenges appear. Thus, this review focuses on the progress of Cu-containing SSZ-13 regarding preparation methods, hydrothermal resistance and poisoning as well as reaction mechanisms in NH3-SCR-DeNO x . Remarkably, the paper reviews also the progress of Cu-containing SSZ-13 in the selective ammonia oxidation into nitrogen and water vapor (NH3-SCO). The dynamics in the NH3-SCR-DeNO x and NH3-SCO fields make this review timely.
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Affiliation(s)
- Magdalena Jabłońska
- Institute of Chemical Technology, Universität Leipzig Linnéstr. 3 04103 Leipzig Germany
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8
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Hu W, Gramigni F, Nasello ND, Usberti N, Iacobone U, Liu S, Nova I, Gao X, Tronconi E. Dynamic Binuclear Cu II Sites in the Reduction Half-Cycle of Low-Temperature NH 3–SCR over Cu-CHA Catalysts. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01213] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wenshuo Hu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Federica Gramigni
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy
| | - Nicole Daniela Nasello
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy
| | - Nicola Usberti
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy
| | - Umberto Iacobone
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy
| | - Shaojun Liu
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Isabella Nova
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy
| | - Xiang Gao
- State Key Laboratory of Clean Energy Utilization, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China
| | - Enrico Tronconi
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156 Milano, Italy
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9
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Isapour G, Wang A, Han J, Feng Y, Grönbeck H, Creaser D, Olsson L, Skoglundh M, Härelind H. In situ DRIFT studies on N 2O formation over Cu-functionalized zeolites during ammonia-SCR. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00247g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The influence of the zeolite framework structure on the formation of N2O during ammonia-SCR of NOx was studied for three different copper-functionalized zeolite samples, namely Cu-SSZ-13 (CHA), Cu-ZSM-5 (MFI), and Cu-BEA (BEA).
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Affiliation(s)
- Ghodsieh Isapour
- Department of Chemistry and Chemical Engineering, Division of Applied Chemistry Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden
| | - Aiyong Wang
- Department of Chemistry and Chemical Engineering, Division of Chemical Engineering, Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden
| | - Joonsoo Han
- Department of Chemistry and Chemical Engineering, Division of Chemical Engineering, Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden
| | - Yingxin Feng
- Department of Physics, Division of Chemical Physics, Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden
| | - Henrik Grönbeck
- Department of Physics, Division of Chemical Physics, Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden
| | - Derek Creaser
- Department of Chemistry and Chemical Engineering, Division of Chemical Engineering, Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden
| | - Louise Olsson
- Department of Chemistry and Chemical Engineering, Division of Chemical Engineering, Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden
| | - Magnus Skoglundh
- Department of Chemistry and Chemical Engineering, Division of Applied Chemistry Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden
| | - Hanna Härelind
- Department of Chemistry and Chemical Engineering, Division of Applied Chemistry Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden
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