1
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Cai J, Wang J, Liu C, Zhang Y, Liu Y, Wang P, Wang X, Fang X, Yu Y, Shan W. Electron transferring with oxygen defects on Ni-promoted Pd/Al 2O 3 catalysts for low-temperature lean methane combustion. J Colloid Interface Sci 2024; 671:712-724. [PMID: 38823112 DOI: 10.1016/j.jcis.2024.05.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/18/2024] [Accepted: 05/25/2024] [Indexed: 06/03/2024]
Abstract
Methane (CH4) is the second most consequential greenhouse gas after CO2, with a substantial global warming potential. The CH4 catalytic combustion offers an efficient method for the elimination of CH4. However, improving the catalytic performance of Pd-based materials for low-temperature CH4 combustion remains a big challenge. In this study, we synthesized an enhanced Pd/5NiAlOx catalyst that demonstrated superior catalytic activity and improved water resistance compared to the Pd/Al2O3 catalyst. Specifically, the T90 was decreased by over 100 °C under both dry and wet conditions. Introducing Ni resulted in an enormously enhanced number of oxygen defects on the obtained 5NiAlOx support. This defect-rich support facilitates the anchoring of PdO through increased electron transfer, thereby inhibiting the production of high-valence Pd(2+δ)+ and stimulating the generation of unsaturated Pd sites. Pd0 can effectively activate surface oxygen and PdO plays a significant role in activating CH4, resulting in high activity for Pd/5NiAlOx. On the other hand, the increased water resistance of Pd/5NiAlOx was mainly due to the generation of *OOH species and the lower accumulation of surface -OH species during the reaction process.
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Affiliation(s)
- Jieying Cai
- Fujian Key Laboratory of Atmospheric Ozone Pollution Prevention, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Ningbo 315800, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingyi Wang
- Fujian Key Laboratory of Atmospheric Ozone Pollution Prevention, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Ningbo 315800, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Congwei Liu
- Fujian Key Laboratory of Atmospheric Ozone Pollution Prevention, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Ningbo 315800, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Zhang
- Fujian Key Laboratory of Atmospheric Ozone Pollution Prevention, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Ningbo 315800, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Yun Liu
- Fujian Key Laboratory of Atmospheric Ozone Pollution Prevention, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Wang
- SINOPEC (Dalian) Research Institute of Petroleum and Petrochemicals Co., Ltd, Dalian 116045, China
| | - Xuehai Wang
- SINOPEC (Dalian) Research Institute of Petroleum and Petrochemicals Co., Ltd, Dalian 116045, China
| | - Xiangchen Fang
- SINOPEC (Dalian) Research Institute of Petroleum and Petrochemicals Co., Ltd, Dalian 116045, China
| | - Yunbo Yu
- Fujian Key Laboratory of Atmospheric Ozone Pollution Prevention, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wenpo Shan
- Fujian Key Laboratory of Atmospheric Ozone Pollution Prevention, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, Ningbo Urban Environment Observation and Research Station, Institute of Urban Environment, Chinese Academy of Sciences, Ningbo 315800, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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2
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Shafaei A, Irankhah A. Evaluation of Co-Fe, Cu-Fe, Ni-Al and Ni-Fe mixed oxides in catalytic combustion of methane: Comparison study and investigating the effect of preparation method. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.112989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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3
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Nkinahamira F, Yang R, Zhu R, Zhang J, Ren Z, Sun S, Xiong H, Zeng Z. Current Progress on Methods and Technologies for Catalytic Methane Activation at Low Temperatures. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2204566. [PMID: 36504369 PMCID: PMC9929156 DOI: 10.1002/advs.202204566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 10/21/2022] [Indexed: 06/17/2023]
Abstract
Methane (CH4 ) is an attractive energy source and important greenhouse gas. Therefore, from the economic and environmental point of view, scientists are working hard to activate and convert CH4 into various products or less harmful gas at low-temperature. Although the inert nature of CH bonds requires high dissociation energy at high temperatures, the efforts of researchers have demonstrated the feasibility of catalysts to activate CH4 at low temperatures. In this review, the efficient catalysts designed to reduce the CH4 oxidation temperature and improve conversion efficiencies are described. First, noble metals and transition metal-based catalysts are summarized for activating CH4 in temperatures ranging from 50 to 500 °C. After that, the partial oxidation of CH4 at relatively low temperatures, including thermocatalysis in the liquid phase, photocatalysis, electrocatalysis, and nonthermal plasma technologies, is briefly discussed. Finally, the challenges and perspectives are presented to provide a systematic guideline for designing and synthesizing the highly efficient catalysts in the complete/partial oxidation of CH4 at low temperatures.
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Affiliation(s)
- François Nkinahamira
- State Key Laboratory of Urban Water Resource and EnvironmentShenzhen Key Laboratory of Organic Pollution Prevention and ControlSchool of Civil and Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen518055P. R. China
| | - Ruijie Yang
- Department of Materials Science and EngineeringCity University of Hong Kong83 Tat Chee AvenueKowloonHong Kong999077P. R. China
| | - Rongshu Zhu
- State Key Laboratory of Urban Water Resource and EnvironmentShenzhen Key Laboratory of Organic Pollution Prevention and ControlSchool of Civil and Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen518055P. R. China
| | - Jingwen Zhang
- State Key Laboratory of Urban Water Resource and EnvironmentShenzhen Key Laboratory of Organic Pollution Prevention and ControlSchool of Civil and Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen518055P. R. China
| | - Zhaoyong Ren
- State Key Laboratory of Urban Water Resource and EnvironmentShenzhen Key Laboratory of Organic Pollution Prevention and ControlSchool of Civil and Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen518055P. R. China
| | - Senlin Sun
- State Key Laboratory of Urban Water Resource and EnvironmentShenzhen Key Laboratory of Organic Pollution Prevention and ControlSchool of Civil and Environmental EngineeringHarbin Institute of Technology ShenzhenShenzhen518055P. R. China
| | - Haifeng Xiong
- State Key Laboratory of Physical Chemistry of Solid SurfacesCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005P. R. China
| | - Zhiyuan Zeng
- Department of Materials Science and EngineeringCity University of Hong Kong83 Tat Chee AvenueKowloonHong Kong999077P. R. China
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4
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Feng Y, Schaefer A, Hellman A, Di M, Härelind H, Bauer M, Carlsson PA. Synthesis and Characterization of Catalytically Active Au Core─Pd Shell Nanoparticles Supported on Alumina. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:12859-12870. [PMID: 36221959 PMCID: PMC9609311 DOI: 10.1021/acs.langmuir.2c01834] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/30/2022] [Indexed: 06/16/2023]
Abstract
A two-step seeded-growth method was refined to synthesize Au@Pd core@shell nanoparticles with thin Pd shells, which were then deposited onto alumina to obtain a supported Au@Pd/Al2O3 catalyst active for prototypical CO oxidation. By the strict control of temperature and Pd/Au molar ratio and the use of l-ascorbic acid for making both Au cores and Pd shells, a 1.5 nm Pd layer is formed around the Au core, as evidenced by transmission electron microscopy and energy-dispersive spectroscopy. The core@shell structure and the Pd shell remain intact upon deposition onto alumina and after being used for CO oxidation, as revealed by additional X-ray diffraction and X-ray photoemission spectroscopy before and after the reaction. The Pd shell surface was characterized with in situ infrared (IR) spectroscopy using CO as a chemical probe during CO adsorption-desorption. The IR bands for CO ad-species on the Pd shell suggest that the shell exposes mostly low-index surfaces, likely Pd(111) as the majority facet. Generally, the IR bands are blue-shifted as compared to conventional Pd/alumina catalysts, which may be due to the different support materials for Pd, Au versus Al2O3, and/or less strain of the Pd shell. Frequencies obtained from density functional calculations suggest the latter to be significant. Further, the catalytic CO oxidation ignition-extinction processes were followed by in situ IR, which shows the common CO poisoning and kinetic behavior associated with competitive adsorption of CO and O2 that is typically observed for noble metal catalysts.
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Affiliation(s)
- Yanyue Feng
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, SE-412 96Gothenburg, Sweden
| | - Andreas Schaefer
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, SE-412 96Gothenburg, Sweden
| | - Anders Hellman
- Department
of Physics, Chalmers University of Technology, SE-412 96Gothenburg, Sweden
| | - Mengqiao Di
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, SE-412 96Gothenburg, Sweden
| | - Hanna Härelind
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, SE-412 96Gothenburg, Sweden
| | - Matthias Bauer
- Department
of Chemistry, Paderborn University, 33098Paderborn, Germany
| | - Per-Anders Carlsson
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, SE-412 96Gothenburg, Sweden
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5
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Wang W, Nadagouda MN, Mukhopadhyay SM. Advances in Matrix-Supported Palladium Nanocatalysts for Water Treatment. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3593. [PMID: 36296782 PMCID: PMC9612339 DOI: 10.3390/nano12203593] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Advanced catalysts are crucial for a wide range of chemical, pharmaceutical, energy, and environmental applications. They can reduce energy barriers and increase reaction rates for desirable transformations, making many critical large-scale processes feasible, eco-friendly, energy-efficient, and affordable. Advances in nanotechnology have ushered in a new era for heterogeneous catalysis. Nanoscale catalytic materials are known to surpass their conventional macro-sized counterparts in performance and precision, owing it to their ultra-high surface activities and unique size-dependent quantum properties. In water treatment, nanocatalysts can offer significant promise for novel and ecofriendly pollutant degradation technologies that can be tailored for customer-specific needs. In particular, nano-palladium catalysts have shown promise in degrading larger molecules, making them attractive for mitigating emerging contaminants. However, the applicability of nanomaterials, including nanocatalysts, in practical deployable and ecofriendly devices, is severely limited due to their easy proliferation into the service environment, which raises concerns of toxicity, material retrieval, reusability, and related cost and safety issues. To overcome this limitation, matrix-supported hybrid nanostructures, where nanocatalysts are integrated with other solids for stability and durability, can be employed. The interaction between the support and nanocatalysts becomes important in these materials and needs to be well investigated to better understand their physical, chemical, and catalytic behavior. This review paper presents an overview of recent studies on matrix-supported Pd-nanocatalysts and highlights some of the novel emerging concepts. The focus is on suitable approaches to integrate nanocatalysts in water treatment applications to mitigate emerging contaminants including halogenated molecules. The state-of-the-art supports for palladium nanocatalysts that can be deployed in water treatment systems are reviewed. In addition, research opportunities are emphasized to design robust, reusable, and ecofriendly nanocatalyst architecture.
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Affiliation(s)
- Wenhu Wang
- Frontier Institute for Research in Sensor Technologies (FIRST), The University of Maine, Orono, ME 04469, USA
| | | | - Sharmila M. Mukhopadhyay
- Frontier Institute for Research in Sensor Technologies (FIRST), The University of Maine, Orono, ME 04469, USA
- Department of Mechanical Engineering, The University of Maine, Orono, ME 04469, USA
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6
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Jiménez JD, Betancourt LE, Danielis M, Zhang H, Zhang F, Orozco I, Xu W, Llorca J, Liu P, Trovarelli A, Rodríguez JA, Colussi S, Senanayake SD. Identification of Highly Selective Surface Pathways for Methane Dry Reforming Using Mechanochemical Synthesis of Pd–CeO 2. ACS Catal 2022; 12:12809-12822. [PMID: 36313524 PMCID: PMC9595205 DOI: 10.1021/acscatal.2c01120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 08/24/2022] [Indexed: 11/30/2022]
Abstract
![]()
The methane dry reforming (DRM) reaction mechanism was
explored
via mechanochemically prepared Pd/CeO2 catalysts (PdAcCeO2M), which yield unique Pd–Ce interfaces, where PdAcCeO2M has a distinct reaction mechanism and higher reactivity
for DRM relative to traditionally synthesized impregnated Pd/CeO2 (PdCeO2IW). In situ characterization and density
functional theory calculations revealed that the enhanced chemistry
of PdAcCeO2M can be attributed to the presence of a carbon-modified
Pd0 and Ce4+/3+ surface arrangement, where distinct
Pd–CO intermediate species and strong Pd–CeO2 interactions are activated and sustained exclusively under reaction
conditions. This unique arrangement leads to highly selective and
distinct surface reaction pathways that prefer the direct oxidation
of CHx to CO, identified on PdAcCeO2M using isotope labeled diffuse reflectance infrared Fourier
transform spectroscopy and highlighting linear Pd–CO species
bound on metallic and C-modified Pd, leading to adsorbed HCOO [1595
cm–1] species as key DRM intermediates, stemming
from associative CO2 reduction. The milled materials contrast
strikingly with surface processes observed on IW samples (PdCeO2IW) where the competing reverse water gas shift reaction predominates.
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Affiliation(s)
- Juan D. Jiménez
- Chemistry Division, Brookhaven National Laboratory, Upton, New York11793, United States
| | - Luis E. Betancourt
- Chemistry Division, Brookhaven National Laboratory, Upton, New York11793, United States
| | - Maila Danielis
- Polytechnic Department and INSTM, University of Udine, Via del Cotonificio 108, 33100Udine, Italy
| | - Hong Zhang
- Department of Chemistry, State University of New York Stony Brook, Stony Brook, New York11794, United States
| | - Feng Zhang
- Department of Chemistry, State University of New York Stony Brook, Stony Brook, New York11794, United States
| | - Ivan Orozco
- Department of Chemistry, State University of New York Stony Brook, Stony Brook, New York11794, United States
| | - Wenqian Xu
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois60439, United States
| | - Jordi Llorca
- Department of Chemical Engineering, Institute of Energy Technologies, Universitat Politécnica de Catalunya, EEBE, Eduard Maristany 10-14, 08018Barcelona, Spain
| | - Ping Liu
- Chemistry Division, Brookhaven National Laboratory, Upton, New York11793, United States
- Department of Chemistry, State University of New York Stony Brook, Stony Brook, New York11794, United States
| | - Alessandro Trovarelli
- Polytechnic Department and INSTM, University of Udine, Via del Cotonificio 108, 33100Udine, Italy
| | - José A. Rodríguez
- Chemistry Division, Brookhaven National Laboratory, Upton, New York11793, United States
- Department of Chemistry, State University of New York Stony Brook, Stony Brook, New York11794, United States
| | - Sara Colussi
- Polytechnic Department and INSTM, University of Udine, Via del Cotonificio 108, 33100Udine, Italy
| | - Sanjaya D. Senanayake
- Chemistry Division, Brookhaven National Laboratory, Upton, New York11793, United States
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7
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Zhang L, Chen J, Yang H, Wang X, Rui Z. In situ mercaptosilane-assisted confinement of Pd nanoparticles in Beta for high-efficient methane oxidation. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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8
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Ballauri S, Sartoretti E, Novara C, Giorgis F, Piumetti M, Fino D, Russo N, Bensaid S. Wide range temperature stability of palladium on ceria-praseodymia catalysts for complete methane oxidation. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.11.035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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De Rosa F, Hardacre C, Graham WG, McCullough G, Millington P, Hinde P, Goguet A. Comparison between the thermal and plasma (NTP) assisted palladium catalyzed oxidation of CH4 using AC or nanopulse power supply. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.04.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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10
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Fertal DR, Monai M, Proaño L, Bukhovko MP, Park J, Ding Y, Weckhuysen BM, Banerjee AC. Calcination temperature effects on Pd/alumina catalysts: Particle size, surface species and activity in methane combustion. Catal Today 2021. [DOI: 10.1016/j.cattod.2021.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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Wang T, Qiu L, Li H, Zhang C, Sun Y, Xi S, Ge J, Xu ZJ, Wang C. Facile synthesis of palladium incorporated NiCo2O4 spinel for low temperature methane combustion: Activate lattice oxygen to promote activity. J Catal 2021. [DOI: 10.1016/j.jcat.2021.10.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Khalid O, Spriewald Luciano A, Drazic G, Over H. Mixed Ru
x
Ir
1−
x
O
2
Supported on Rutile TiO
2
: Catalytic Methane Combustion, a Model Study. ChemCatChem 2021. [DOI: 10.1002/cctc.202100858] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Omeir Khalid
- Physikalisch-Chemisches Institut Justus Liebig University Heinrich-Buff-Ring 17 35392 Giessen Germany
- Zentrum für Materialforschung Justus Liebig University Heinrich-Buff-Ring 16 35392 Giessen Germany
| | - Alexander Spriewald Luciano
- Physikalisch-Chemisches Institut Justus Liebig University Heinrich-Buff-Ring 17 35392 Giessen Germany
- Zentrum für Materialforschung Justus Liebig University Heinrich-Buff-Ring 16 35392 Giessen Germany
| | - Goran Drazic
- Department of Materials Chemistry National Institute of Chemistry Hajdrihova 19 1000 Ljubljana Slovenia
| | - Herbert Over
- Physikalisch-Chemisches Institut Justus Liebig University Heinrich-Buff-Ring 17 35392 Giessen Germany
- Zentrum für Materialforschung Justus Liebig University Heinrich-Buff-Ring 16 35392 Giessen Germany
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13
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Velin P, Hemmingsson F, Schaefer A, Skoglundh M, Lomachenko KA, Raj A, Thompsett D, Smedler G, Carlsson P. Hampered PdO Redox Dynamics by Water Suppresses Lean Methane Oxidation over Realistic Palladium Catalysts. ChemCatChem 2021. [DOI: 10.1002/cctc.202100829] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Peter Velin
- Department of Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
| | - Felix Hemmingsson
- Department of Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
| | - Andreas Schaefer
- Department of Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
| | - Magnus Skoglundh
- Department of Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
| | | | - Agnes Raj
- Johnson Matthey Technology Centre Blounts Court RG4 9NH Sonning Common, Reading UK
| | - David Thompsett
- Johnson Matthey Technology Centre Blounts Court RG4 9NH Sonning Common, Reading UK
| | | | - Per‐Anders Carlsson
- Department of Chemistry and Chemical Engineering Chalmers University of Technology 412 96 Gothenburg Sweden
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14
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Lee J, Lim TH, Lee E, Kim DH. Promoting the Methane Oxidation on Pd/CeO
2
Catalyst by Increasing the Surface Oxygen Mobility via Defect Engineering. ChemCatChem 2021. [DOI: 10.1002/cctc.202100653] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jaeha Lee
- School of Chemical and Biological Engineering Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 151-744 Korea
| | - Tae Hwan Lim
- School of Chemical and Biological Engineering Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 151-744 Korea
| | - Eunwon Lee
- School of Chemical and Biological Engineering Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 151-744 Korea
| | - Do Heui Kim
- School of Chemical and Biological Engineering Institute of Chemical Processes Seoul National University 1 Gwanak-ro, Gwanak-gu Seoul 151-744 Korea
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15
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Preparation of Pd/SiO2 Catalysts by a Simple Dry Ball-Milling Method for Lean Methane Oxidation and Probe of the State of Active Pd Species. Catalysts 2021. [DOI: 10.3390/catal11060725] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
A series of Pd/SiO2 catalysts were prepared with different Pd precursors by a dry ball-milling method and used in the catalytic oxidation of lean methane at low temperature. The effect of Pd precursors on the catalytic performance was investigated and the state of the most active Pd species was probed. The results indicate that dry ball-milling is a simple but rather effective method to prepare the Pd/SiO2 catalysts for lean methane oxidation, and palladium acetylacetonate is an ideal precursor to obtain a highly active Pd/SiO2-Acac catalyst with well- and stably dispersed Pd species, owing to the tight contact between acetylacetonate and Si–OH on the SiO2 support. Besides the size and dispersion of Pd particles, the oxidation state of Pd species also plays a crucial role in determining the catalytic activity of Pd/SiO2 in lean methane oxidation at low temperature. A non-monotonic dependence of the catalytic activity on the Pd oxidation state is observed. The activity of various Pd species follows the order of PdOx >> Pd > PdO; the PdOx/SiO2-Acac catalysts (in particular for PdO0.82/SiO2-Acac when x = 0.82) exhibit much higher activity in lean methane oxidation at low temperature than Pd/SiO2-Acac and PdO/SiO2-Acac. The catalytic activity of PdOx/SiO2 may degrade during the methane oxidation due to the gradual transformation of PdOx to PdO in the oxygen-rich ambiance; however, such degradation is reversible and the activity of a degraded Pd/SiO2 catalyst can be recovered through a redox treatment to regain the PdOx species. This work helps to foster a better understanding of the relationship between the structure and performance of supported Pd catalysts by clarifying the state of active Pd species, which should be beneficial to the design of an active catalyst in lean methane oxidation at low temperature.
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16
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Muravev V, Spezzati G, Su YQ, Parastaev A, Chiang FK, Longo A, Escudero C, Kosinov N, Hensen EJM. Interface dynamics of Pd–CeO2 single-atom catalysts during CO oxidation. Nat Catal 2021. [DOI: 10.1038/s41929-021-00621-1] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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17
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Hartwig C, Schweinar K, Nicholls R, Beeg S, Schlögl R, Greiner M. Surface composition of AgPd single-atom alloy catalyst in an oxidative environment. J Chem Phys 2021; 154:174708. [PMID: 34241061 DOI: 10.1063/5.0045999] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Single-atom alloys (SAAs) have recently gained considerable attention in the field of heterogeneous catalysis research due to their potential for novel catalytic properties. While SAAs are often examined in reactions of reductive atmospheres, such as hydrogenation reactions, in the present work, we change the focus to AgPd SAAs in oxidative environments since Pd has the highest catalytic activity of all metals for oxidative reactions. Here, we examine how the chemical reactivity of AgPd SAAs differs from its constituent Pd in an oxidative atmosphere. For this purpose, electronic structure changes in an Ag0.98Pd0.02 SAA foil in 1 mbar of O2 were studied by in situ x-ray photoemission spectroscopy and compared with the electronic structure of a Pd foil under the same conditions. When heated in an oxidative atmosphere, Pd in Ag0.98Pd0.02 partly oxidizes and forms a metastable PdOx surface oxide. By using a peak area modeling procedure, we conclude that PdOx on Ag0.98Pd0.02 is present as thin, possibly monolayer thick, PdOx islands on the surface. In comparison to the PdO formed on the Pd foil, the PdOx formed on AgPd is substantially less thermodynamically stable, decomposing at temperatures about 270 °C lower than the native oxide on Pd. Such behavior is an interesting property of oxides formed on dilute alloys, which could be potentially utilized in catalytic oxidative reactions such as methane oxidation.
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Affiliation(s)
- Caroline Hartwig
- Max Planck Institute for Chemical Energy Conversion, Mülheim an der Ruhr, Germany
| | - Kevin Schweinar
- Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf, Germany
| | - Rachel Nicholls
- Max Planck Institute for Chemical Energy Conversion, Mülheim an der Ruhr, Germany
| | - Sebastian Beeg
- Max Planck Institute for Chemical Energy Conversion, Mülheim an der Ruhr, Germany
| | - Robert Schlögl
- Max Planck Institute for Chemical Energy Conversion, Mülheim an der Ruhr, Germany
| | - Mark Greiner
- Max Planck Institute for Chemical Energy Conversion, Mülheim an der Ruhr, Germany
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18
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Yuan N, Gudmundsson A, Gustafson KPJ, Oschmann M, Tai CW, Persson I, Zou X, Verho O, Bajnóczi ÉG, Bäckvall JE. Investigation of the Deactivation and Reactivation Mechanism of a Heterogeneous Palladium(II) Catalyst in the Cycloisomerization of Acetylenic Acids by In Situ XAS . ACS Catal 2021; 11:2999-3008. [PMID: 33842022 PMCID: PMC8028044 DOI: 10.1021/acscatal.0c04374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 02/11/2021] [Indexed: 11/30/2022]
Abstract
![]()
A well-studied heterogeneous
palladium(II) catalyst used for the
cycloisomerization of acetylenic acids is known to be susceptible
to deactivation through reduction. To gain a deeper understanding
of this deactivation process and to enable the design of a reactivation
strategy, in situ X-ray absorption spectroscopy (XAS)
was used. With this technique, changes in the palladium oxidation
state and coordination environment could be studied in close detail,
which provided experimental evidence that the deactivation was primarily
caused by triethylamine-promoted reduction of palladium(II) to metallic
palladium nanoparticles. Furthermore, it was observed that the choice
of the acetylenic acid substrate influenced the distribution between
palladium(II) and palladium(0) species in the heterogeneous catalyst
after the reaction. From the mechanistic insight gained through XAS,
an improved catalytic protocol was developed that did not suffer from
deactivation and allowed for more efficient recycling of the catalyst.
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Affiliation(s)
- Ning Yuan
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Arnar Gudmundsson
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Karl P. J. Gustafson
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Michael Oschmann
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Cheuk-Wai Tai
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Ingmar Persson
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Xiaodong Zou
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Oscar Verho
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
- Department of Medicinal Chemistry, Uppsala Biomedical Centre, Uppsala University, SE-751 23 Uppsala, Sweden
| | - Éva G. Bajnóczi
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
- Wigner Research Centre for Physics, H-1121 Budapest, Hungary
| | - Jan-E. Bäckvall
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
- Department of Natural Sciences, Mid Sweden University, Holmgatan 10, SE-851 70 Sundsvall, Sweden
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19
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Abstract
Infrared spectroscopy is typically not used to establish the oxidation state of metal-based catalysts. In this work, we show that the baseline of spectra collected in diffuse reflectance mode of a series of Pd/Al2O3 samples of increasing Pd content varies significantly and reversibly under alternate pulses of CO or H2 and O2. Moreover, these baseline changes are proportional to the Pd content in Pd/Al2O3 samples exhibiting comparable Pd particle size. Similar measurements by X-ray absorption spectroscopy on a different 2 wt.% Pd/Al2O3 confirm that the baseline changes reflect the reversible reduction-oxidation of Pd. Hence, we demonstrate that changes in oxidation state of metal-based catalysts can be determined using diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and that this behavior is part of the spectral changes that are returned by experiments under operando conditions.
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20
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Gong J, Pihl J, Wang D, Kim MY, Partridge WP, Li J, Cunningham M, Kamasamudram K, Currier N, Yezerets A. O2 dosage as a descriptor of TWC performance under lean/rich dithering in stoichiometric natural gas engines. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.02.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Wang Z, Khalid O, Wang W, Wang Y, Weber T, Spriewald Luciano A, Zhan W, Smarsly BM, Over H. Comparison study of the effect of CeO 2-based carrier materials on the total oxidation of CO, methane, and propane over RuO 2. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01277k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
While activity and kinetics of catalytic CO and propane combustion over RuO2 depends sensitively on the carrier material, methane combustion on RuO2 is hardly affected by the carrier.
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Affiliation(s)
- Zheng Wang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
- Physikalisch-Chemisches Institut, Justus Liebig University, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
| | - Omeir Khalid
- Physikalisch-Chemisches Institut, Justus Liebig University, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
| | - Wei Wang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
- Physikalisch-Chemisches Institut, Justus Liebig University, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
| | - Yu Wang
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Tim Weber
- Physikalisch-Chemisches Institut, Justus Liebig University, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
| | | | - Wangcheng Zhan
- Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Bernd M. Smarsly
- Physikalisch-Chemisches Institut, Justus Liebig University, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
| | - Herbert Over
- Physikalisch-Chemisches Institut, Justus Liebig University, Heinrich-Buff-Ring 17, D-35392 Giessen, Germany
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22
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Jiang D, Khivantsev K, Wang Y. Low-Temperature Methane Oxidation for Efficient Emission Control in Natural Gas Vehicles: Pd and Beyond. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03338] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dong Jiang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
| | - Konstantin Khivantsev
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Yong Wang
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99164, United States
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
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23
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Farahani MD, Wolf M, P.O. Mkhwanazi T, Claeys M, Friedrich HB. Operando experimental evidence on the central role of oxygen vacancies during methane combustion. J Catal 2020. [DOI: 10.1016/j.jcat.2020.07.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Particle Size and PdO–Support Interactions in PdO/CeO2-γ Al2O3 Catalysts and Effect on Methane Combustion. Catalysts 2020. [DOI: 10.3390/catal10090976] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
In this study, we investigated the effects of sequential impregnation in two PdO/CeO2/Al2O3 nanocatalysts (4Pd-20CeO2/Al2O3 and 20CeO2-4Pd/Al2O₃) on catalytic properties, particle sizes, and metal oxide–support interactions. Pulse chemisorption indicated significantly higher dispersion and smaller particle size in the 20CeO2-4Pd/Al2O₃ catalyst. STEM images of the 4Pd-20CeO2/Al2O₃ catalyst showed PdO nanoparticles on the surface of crystalline Al2O₃. In the 20CeO2-4Pd/Al2O3 catalyst, PdO nanoparticles were strongly embedded on ceria indicating PdO-ceria interactions. Both supports were on separate sites in the two catalysts suggesting weak interactions. PdO particle sizes were 6–12 nm in the 4Pd-20CeO2/Al2O₃ catalyst and 4–8 nm in the 20CeO2-4Pd/Al2O₃ catalyst. Methane conversion was 100% at 275 °C after a 20-min run with the 4Pd-20CeO2/Al2O3 catalyst compared to 25% conversion by the 20CeO2-4Pd/Al2O₃ catalyst under same conditions. The support alumina could stabilize the PdO species and facilitated oxygen migration on the surface and from the bulk in the 4Pd-20CeO2/Al2O3 catalyst. The lower activities in the 20CeO2-4Pd/Al2O₃ catalyst could be due to inaccessibility of PdO active sites at low temperature due to embedment of PdO nanoparticles on ceria. We could infer from our data that sequence of impregnation in catalyst synthesis could significantly influence catalytic properties and methane combustion due to PdO–support interactions.
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25
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Karinshak KA, Lott P, Harold MP, Deutschmann O. In situ
Activation of Bimetallic Pd−Pt Methane Oxidation Catalysts. ChemCatChem 2020. [DOI: 10.1002/cctc.202000603] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kyle A. Karinshak
- Institute for Chemical Technology and Polymer Chemistry (ITCP)Karlsruhe Institute of Technology (KIT) Engesserstr. 20 76131 Karlsruhe Germany
- Department of Chemical and Biomolecular EngineeringUniversity of Houston 4726 Calhoun Rd Houston TX 77204-4004 USA
| | - Patrick Lott
- Institute for Chemical Technology and Polymer Chemistry (ITCP)Karlsruhe Institute of Technology (KIT) Engesserstr. 20 76131 Karlsruhe Germany
| | - Michael P. Harold
- Department of Chemical and Biomolecular EngineeringUniversity of Houston 4726 Calhoun Rd Houston TX 77204-4004 USA
| | - Olaf Deutschmann
- Institute for Chemical Technology and Polymer Chemistry (ITCP)Karlsruhe Institute of Technology (KIT) Engesserstr. 20 76131 Karlsruhe Germany
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26
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Structure-activity relationship in Pd/CeO2 methane oxidation catalysts. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(19)63510-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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27
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Marchionni V, Nachtegaal M, Ferri D. Influence of CO on Dry CH 4 Oxidation on Pd/Al 2O 3 by Operando Spectroscopy: A Multitechnique Modulated Excitation Study. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05541] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | - Davide Ferri
- Paul Scherrer Institut, CH-5232 Villigen, Switzerland
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28
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Li S, Gu K, Wang H, Xu B, Li H, Shi X, Huang Z, Liu H. Degradable Holey Palladium Nanosheets with Highly Active 1D Nanoholes for Synergetic Phototherapy of Hypoxic Tumors. J Am Chem Soc 2020; 142:5649-5656. [DOI: 10.1021/jacs.9b12929] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shanshan Li
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic−Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Kai Gu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic−Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Hui Wang
- CAS Key Laboratory of Nanosystem and Hierarchial Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
| | - Bolong Xu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic−Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P.R. China
| | - Huawei Li
- CAS Key Laboratory of Nanosystem and Hierarchial Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
| | - Xinghua Shi
- CAS Key Laboratory of Nanosystem and Hierarchial Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. China
| | - Zhijun Huang
- Beijing National Laboratory of Molecular Sciences, Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Huiyu Liu
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic−Inorganic Composites, Bionanomaterials & Translational Engineering Laboratory, Beijing Key Laboratory of Bioprocess, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, P.R. China
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29
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Danielis M, Colussi S, de Leitenburg C, Trovarelli A. The role of palladium salt precursors in Pd-PdO/CeO2 catalysts prepared by dry milling for methane oxidation. CATAL COMMUN 2020. [DOI: 10.1016/j.catcom.2019.105899] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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30
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Lin J, Chen X, Zheng Y, Huang F, Xiao Y, Zheng Y, Jiang L. Facile construction of ultrastable alumina anchored palladium catalysts via a designed one pot strategy for enhanced methane oxidation. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00727g] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A highly stable Pd–Al2O3 catalyst with anchored palladium species was facilely prepared through a one pot strategy for efficient methane oxidation.
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Affiliation(s)
- Jia Lin
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou
- P. R. China
| | - Xiaohua Chen
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou
- P. R. China
| | - Yong Zheng
- National Engineering Research Center of Chemical Fertilizer Catalyst
- Fuzhou University
- Fuzhou
- P. R. China
| | - Fei Huang
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou
- P. R. China
| | - Yihong Xiao
- National Engineering Research Center of Chemical Fertilizer Catalyst
- Fuzhou University
- Fuzhou
- P. R. China
| | - Ying Zheng
- College of Chemistry and Materials Science
- Fujian Normal University
- Fuzhou
- P. R. China
| | - Lilong Jiang
- National Engineering Research Center of Chemical Fertilizer Catalyst
- Fuzhou University
- Fuzhou
- P. R. China
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31
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Velin P, Florén CR, Skoglundh M, Raj A, Thompsett D, Smedler G, Carlsson PA. Palladium dispersion effects on wet methane oxidation kinetics. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00734j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The catalytic activity for dry and wet methane oxidation over a series of palladium–alumina catalysts with systematically varied palladium loadings and PdO dispersions was measured and compared with conceptual multiscale simulations.
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Affiliation(s)
- Peter Velin
- Department of Chemistry and Chemical Engineering
- Competence Centre for Catalysis
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
| | - Carl-Robert Florén
- Department of Chemistry and Chemical Engineering
- Competence Centre for Catalysis
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
| | - Magnus Skoglundh
- Department of Chemistry and Chemical Engineering
- Competence Centre for Catalysis
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
| | - Agnes Raj
- Johnson Matthey Technology Centre
- Reading
- UK
| | | | | | - Per-Anders Carlsson
- Department of Chemistry and Chemical Engineering
- Competence Centre for Catalysis
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
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32
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Hosseiniamoli H, Setiawan A, Adesina AA, Kennedy EM, Stockenhuber M. The stability of Pd/TS-1 and Pd/silicalite-1 for catalytic oxidation of methane – understanding the role of titanium. Catal Sci Technol 2020. [DOI: 10.1039/c9cy01579e] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The stability of Pd/TS-1 and Pd/silicalite-1 catalysts was assessed at 400 °C and an approximate relative humidity (RH) of 80% for catalytic combustion of fugitive methane emissions, aiming to understand the role of titanium in the stability of the catalysts.
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Affiliation(s)
- Hadi Hosseiniamoli
- Center for Infrastructure Engineering
- Western Sydney University
- Sydney
- Australia
| | - Adi Setiawan
- Mechanical Engineering Department
- Universitas Malikussaleh
- Lhokseumawe
- Indonesia
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33
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Du J, Zhao D, Wang C, Zhao Y, Li H, Luo Y. Size effects of Pd nanoparticles supported over CeZrPAl for methane oxidation. Catal Sci Technol 2020. [DOI: 10.1039/d0cy01714k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Pd nanoparticles accompanied with distorted morphology result in considerable active sites and enhance the intrinsic activity for catalytic methane oxidation.
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Affiliation(s)
- Junchen Du
- Faculty of Environmental Science and Engineering
- Kunming University of Science and Technology
- Kunming 650500
- China
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
| | - Depeng Zhao
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming 650106
- China
| | - Chengxiong Wang
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming 650106
- China
| | - Yunkun Zhao
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming 650106
- China
| | - Hong Li
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- Kunming 650106
- China
| | - Yongming Luo
- Faculty of Environmental Science and Engineering
- Kunming University of Science and Technology
- Kunming 650500
- China
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34
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ZHAN YY, KANG L, ZHOU YC, CAI GH, CHEN CQ, JIANG LL. Pd/Al2O3 catalysts modified with Mg for catalytic combustion of methane: Effect of Mg/Al mole ratios on the supports and active PdO formation. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/s1872-5813(19)30050-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Oxygen Atom Function: The Case of Methane Oxidation Mechanism to Synthesis Gas over a Pd Cluster. Catalysts 2019. [DOI: 10.3390/catal9080666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
A dimer model Pd2 was established to study the adsorption of CHx (x = 1–4) and CH4 dehydrogenation, as well as syngas formation using density functional theory (DFT) at the atomic level. Meanwhile, insight into understanding the role of the oxygen atom on the partial oxidation of methane (POM) was also calculated based on a trimer model of Pd2O. For the adsorption of CHx, results showed that the presence of an oxygen atom was a disadvantage to the adsorption of CHx (x = 1–3) species. For CH4 dissociation, the process of CH2→CH + H was found to be the rate-limiting step (RSD) on both Pd2 and Pd2O. H2 was formed by the reaction of CH2 + 2H→CH2 + H2. For CO formation, it was primarily formed in the process of CH + O→CHO→CO + H on both the Pd2 and the Pd2O catalyst. Thermodynamic and kinetic calculations revealed that formation and maintainance of the oxygen atom on the Pd surface could promote a POM reaction to achieve high H2 and CO yield and selectivity. Our study provides a helpful understanding of the effect of an adsorbed oxygen atom on a POM reaction with a Pd catalyst.
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36
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Zandkarimi B, Alexandrova AN. Surface‐supported cluster catalysis: Ensembles of metastable states run the show. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2019. [DOI: 10.1002/wcms.1420] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Borna Zandkarimi
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles California
| | - Anastassia N. Alexandrova
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles California
- California NanoSystems Institute University of California, Los Angeles Los Angeles California
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37
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Taming the stability of Pd active phases through a compartmentalizing strategy toward nanostructured catalyst supports. Nat Commun 2019; 10:1611. [PMID: 30962455 PMCID: PMC6453908 DOI: 10.1038/s41467-019-09662-4] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 03/09/2019] [Indexed: 01/30/2023] Open
Abstract
The design and synthesis of robust sintering-resistant nanocatalysts for high-temperature oxidation reactions is ubiquitous in many industrial catalytic processes and still a big challenge in implementing nanostructured metal catalyst systems. Herein, we demonstrate a strategy for designing robust nanocatalysts through a sintering-resistant support via compartmentalization. Ultrafine palladium active phases can be highly dispersed and thermally stabilized by nanosheet-assembled γ-Al2O3 (NA-Al2O3) architectures. The NA-Al2O3 architectures with unique flowerlike morphologies not only efficiently suppress the lamellar aggregation and irreversible phase transformation of γ-Al2O3 nanosheets at elevated temperatures to avoid the sintering and encapsulation of metal phases, but also exhibit significant structural advantages for heterogeneous reactions, such as fast mass transport and easy access to active sites. This is a facile stabilization strategy that can be further extended to improve the thermal stability of other Al2O3-supported nanocatalysts for industrial catalytic applications, in particular for those involving high-temperature reactions. The design and synthesis of robust sintering-resistant nanocatalysts for high-temperature oxidation reactions remains challenging, even though the strategy of metal-support interactions has been extensively used. Here, the authors demonstrate an alternative strategy for designing robust nanocatalysts through a sintering-resistant support.
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38
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Comparative Study of the Characteristics and Activities of Pd/γ-Al2O3 Catalysts Prepared by Vortex and Incipient Wetness Methods. Catalysts 2019. [DOI: 10.3390/catal9040336] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
5 wt% Pd/γ-Al2O3 catalysts were prepared by a modified Vortex Method (5-Pd-VM) and Incipient Wetness Method (5-Pd-IWM), and characterized by various techniques (Inductively coupled plasma atomic emission spectroscopy (ICP-AES), N2-physisorption, pulse CO chemisorption, temperature programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS), scanning transmission electron microscopy (STEM), and X-ray diffraction (XRD)) under identical conditions. Both catalysts had similar particle sizes and dispersions; the 5-Pd-VM catalyst had 0.5 wt% more Pd loading (4.6 wt%). The surfaces of both catalysts contained PdO and PdOx with about 7% more PdOx in 5-Pd-VM. High-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and scanning electron microscope (SEM) images indicated presence of PdO/PdOx nanocrystals (8–10 nm) on the surface of the support. Size distribution by STEM showed presence of smaller nanoparticles (2–5 nm) in 5-Pd-VM. This catalyst was more active in the lower temperature range of 275–325 °C and converted 90% methane at 325 °C. The 5-Pd-VM catalyst was also very stable after 72-hour stability test at 350 °C showing 100% methane conversion, and was relatively resistant to steam deactivation. Hydrogen TPR of 5-Pd-VM gave a reduction peak at 325 °C indicating weaker interactions of the oxidized Pd species with the support. It is hypothesized that smaller particle sizes, uniform particle distribution, and weaker PdO/PdOx interactions with the support may contribute to the higher activity in 5-Pd-VM.
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39
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Stotz H, Maier L, Boubnov A, Gremminger A, Grunwaldt JD, Deutschmann O. Surface reaction kinetics of methane oxidation over PdO. J Catal 2019. [DOI: 10.1016/j.jcat.2018.12.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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40
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Gaur A, Hartmann Dabros TM, Høj M, Boubnov A, Prüssmann T, Jelic J, Studt F, Jensen AD, Grunwaldt JD. Probing the Active Sites of MoS2 Based Hydrotreating Catalysts Using Modulation Excitation Spectroscopy. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04778] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Abhijeet Gaur
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Karlsruhe, D-76131 Germany
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology (KIT), Karlsruhe, D-76131 Germany
| | - Trine Marie Hartmann Dabros
- Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Kgs. Lyngby, DK-2800 Denmark
| | - Martin Høj
- Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Kgs. Lyngby, DK-2800 Denmark
| | - Alexey Boubnov
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Karlsruhe, D-76131 Germany
| | - Tim Prüssmann
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology (KIT), Karlsruhe, D-76131 Germany
| | - Jelena Jelic
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology (KIT), Karlsruhe, D-76131 Germany
| | - Felix Studt
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Karlsruhe, D-76131 Germany
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology (KIT), Karlsruhe, D-76131 Germany
| | - Anker Degn Jensen
- Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Kgs. Lyngby, DK-2800 Denmark
| | - Jan-Dierk Grunwaldt
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Karlsruhe, D-76131 Germany
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology (KIT), Karlsruhe, D-76131 Germany
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41
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Structural selectivity of supported Pd nanoparticles for catalytic NH3 oxidation resolved using combined operando spectroscopy. Nat Catal 2019. [DOI: 10.1038/s41929-018-0213-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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42
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Kong Q, Yin Y, Xue B, Jin Y, Feng W, Chen ZG, Su S, Sun C. Improved catalytic combustion of methane using CuO nanobelts with predominantly (001) surfaces. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2018; 9:2526-2532. [PMID: 30345215 PMCID: PMC6176823 DOI: 10.3762/bjnano.9.235] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/10/2018] [Indexed: 06/08/2023]
Abstract
Through computational calculations, CuO(001) has been identified as an active surface for methane oxidation. Experimental validation with CuO nanobelts comprised of predominantly (001) surfaces has been performed and it is confirmed that the performance of such nanobelts is much higher than normal nanoparticles and nanowires. First principle calculations further clarified that two-coordinated oxygen plays a key role for methane adsorption and oxidation.
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Affiliation(s)
- Qingquan Kong
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, PR China
| | - Yichun Yin
- School of Chemistry, Faculty of Science, Monash University, VIC 3800 Australia
| | - Bing Xue
- CSIRO Energy, PO Box 883, Kenmore, QLD 4069 Australia
- School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621000, PR China
| | - Yonggang Jin
- CSIRO Energy, 1 Technology Court, Pullenvale QLD 4069, Australia
| | - Wei Feng
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, PR China
| | - Zhi-Gang Chen
- Centre for Future Materials, University of Southern Queensland, Springfield QLD 4300, Australia
| | - Shi Su
- CSIRO Energy, 1 Technology Court, Pullenvale QLD 4069, Australia
| | - Chenghua Sun
- Department of Chemistry and Biotechnology, Faculty of Science, Engineering & Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia
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43
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Danielis M, Colussi S, de Leitenburg C, Soler L, Llorca J, Trovarelli A. Outstanding Methane Oxidation Performance of Palladium-Embedded Ceria Catalysts Prepared by a One-Step Dry Ball-Milling Method. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805929] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Maila Danielis
- Polytechnic Department; University of Udine; Via del Cotonificio 108 33100 Udine Italy
| | - Sara Colussi
- Polytechnic Department; University of Udine; Via del Cotonificio 108 33100 Udine Italy
| | - Carla de Leitenburg
- Polytechnic Department; University of Udine; Via del Cotonificio 108 33100 Udine Italy
| | - Lluís Soler
- Institute of Energy Technologies; Department of Chemical Engineering and Barcelona Research Centre in Multiscale Science and Engineering; Universitat Politècnica de Catalunya, EEBE; Eduard Maristany 10-14 08019 Barcelona Spain
| | - Jordi Llorca
- Institute of Energy Technologies; Department of Chemical Engineering and Barcelona Research Centre in Multiscale Science and Engineering; Universitat Politècnica de Catalunya, EEBE; Eduard Maristany 10-14 08019 Barcelona Spain
| | - Alessandro Trovarelli
- Polytechnic Department; University of Udine; Via del Cotonificio 108 33100 Udine Italy
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44
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Danielis M, Colussi S, de Leitenburg C, Soler L, Llorca J, Trovarelli A. Outstanding Methane Oxidation Performance of Palladium-Embedded Ceria Catalysts Prepared by a One-Step Dry Ball-Milling Method. Angew Chem Int Ed Engl 2018; 57:10212-10216. [DOI: 10.1002/anie.201805929] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Maila Danielis
- Polytechnic Department; University of Udine; Via del Cotonificio 108 33100 Udine Italy
| | - Sara Colussi
- Polytechnic Department; University of Udine; Via del Cotonificio 108 33100 Udine Italy
| | - Carla de Leitenburg
- Polytechnic Department; University of Udine; Via del Cotonificio 108 33100 Udine Italy
| | - Lluís Soler
- Institute of Energy Technologies; Department of Chemical Engineering and Barcelona Research Centre in Multiscale Science and Engineering; Universitat Politècnica de Catalunya, EEBE; Eduard Maristany 10-14 08019 Barcelona Spain
| | - Jordi Llorca
- Institute of Energy Technologies; Department of Chemical Engineering and Barcelona Research Centre in Multiscale Science and Engineering; Universitat Politècnica de Catalunya, EEBE; Eduard Maristany 10-14 08019 Barcelona Spain
| | - Alessandro Trovarelli
- Polytechnic Department; University of Udine; Via del Cotonificio 108 33100 Udine Italy
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45
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Mahara Y, Murata K, Ueda K, Ohyama J, Kato K, Satsuma A. Time Resolved in situ DXAFS Revealing Highly Active Species of PdO Nanoparticle Catalyst for CH4
Oxidation. ChemCatChem 2018. [DOI: 10.1002/cctc.201800573] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuji Mahara
- Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
| | - Kazumasa Murata
- Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
| | - Kakuya Ueda
- Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
| | - Junya Ohyama
- Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
- Unit of Elements Strategy Initiative for Catalysts & Batteries; Kyoto University; Kyoto 615-8530 Japan
| | - Kazuo Kato
- Japan Synchrotron Radiation Research Institute; 1-1 Kouto Sayo-cho, Sayo-gun Hyogo 679-5198 Japan
| | - Atsushi Satsuma
- Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
- Unit of Elements Strategy Initiative for Catalysts & Batteries; Kyoto University; Kyoto 615-8530 Japan
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46
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Nilsson J, Carlsson PA, Martin NM, Velin P, Meira DM, Grönbeck H, Skoglundh M. Oxygen step-response experiments for methane oxidation over Pd/Al2O3: An in situ XAFS study. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.02.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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47
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Hosseiniamoli H, Bryant G, Kennedy EM, Mathisen K, Nicholson D, Sankar G, Setiawan A, Stockenhuber M. Understanding Structure–Function Relationships in Zeolite-Supported Pd Catalysts for Oxidation of Ventilation Air Methane. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04462] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Glenn Bryant
- The University of Newcastle, Newcastle 2308, Australia
| | | | - Karina Mathisen
- Norwegian University of Science & Technology, Trondheim N-7491, Norway
| | - David Nicholson
- Norwegian University of Science & Technology, Trondheim N-7491, Norway
| | - Gopinathan Sankar
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
| | - Adi Setiawan
- Mechanical Engineering Department, Universitas Malikussaleh, Lhokseumawe 24352, Indonesia
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48
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Structural Kinetics of Cathode Events on Polymer Electrolyte Fuel Cell Catalysts Studied by Operando Time-Resolved XAFS. Catal Letters 2018. [DOI: 10.1007/s10562-018-2383-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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49
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Florén CR, Van den Bossche M, Creaser D, Grönbeck H, Carlsson PA, Korpi H, Skoglundh M. Modelling complete methane oxidation over palladium oxide in a porous catalyst using first-principles surface kinetics. Catal Sci Technol 2018. [DOI: 10.1039/c7cy02135f] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Modeled turnover frequencies for varying temperature and total pressure combined with reaction rate controlling regions.
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Affiliation(s)
- Carl-Robert Florén
- Competence Centre for Catalysis
- Department of Chemistry and Chemical Engineering
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
| | - Maxime Van den Bossche
- Competence Centre for Catalysis
- Department of Physics
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
| | - Derek Creaser
- Competence Centre for Catalysis
- Department of Chemistry and Chemical Engineering
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
| | - Henrik Grönbeck
- Competence Centre for Catalysis
- Department of Physics
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
| | - Per-Anders Carlsson
- Competence Centre for Catalysis
- Department of Chemistry and Chemical Engineering
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
| | | | - Magnus Skoglundh
- Competence Centre for Catalysis
- Department of Chemistry and Chemical Engineering
- Chalmers University of Technology
- SE-41296 Göteborg
- Sweden
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50
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Ma J, Lou Y, Cai Y, Zhao Z, Wang L, Zhan W, Guo Y, Guo Y. The relationship between the chemical state of Pd species and the catalytic activity for methane combustion on Pd/CeO2. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00208h] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Three Pd/CeO2 catalysts are synthesized by reduction-deposition and an impregnation method (IMP) to clarify how the chemical state of Pd influences the catalytic performance for CH4 combustion.
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Affiliation(s)
- Jian Ma
- Key Laboratories for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yang Lou
- Department of Physics
- Arizona State University
- Tempe
- USA
| | - Yafeng Cai
- Key Laboratories for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Zhenyang Zhao
- Key Laboratories for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Li Wang
- Key Laboratories for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Wangcheng Zhan
- Key Laboratories for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yanglong Guo
- Key Laboratories for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Yun Guo
- Key Laboratories for Advanced Materials
- Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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