101
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Krans NA, Weber JL, van den Bosch W, Zečević J, de Jongh PE, de Jong KP. Influence of Promotion on the Growth of Anchored Colloidal Iron Oxide Nanoparticles during Synthesis Gas Conversion. ACS Catal 2020; 10:1913-1922. [PMID: 32064142 PMCID: PMC7011703 DOI: 10.1021/acscatal.9b04380] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 01/07/2020] [Indexed: 11/29/2022]
Abstract
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Using colloidal iron
oxide nanoparticles with organic ligands,
anchored in a separate step from the supports, has been shown to be
beneficial to obtain homogeneously distributed metal particles with
a narrow size distribution. Literature indicates that promoting these
particles with sodium and sulfur creates an active Fischer–Tropsch
catalyst to produce olefins, while further adding an H-ZSM-5 zeolite
is an effective way to obtain aromatics. This research focused on
the promotion of iron oxide colloids with sodium and sulfur using
an inorganic ligand exchange followed by the attachment to H-ZSM-5
zeolite crystals. The catalyst referred to as FeP/Z, which consists
of iron particles with inorganic ligands attached to a H-ZSM-5 catalyst,
was compared to an unpromoted Fe/Z catalyst and an Fe/Z-P catalyst,
containing the colloidal nanoparticles with organic ligands, promoted
after attachment. A low CO conversion was observed on both FeP/Z and
Fe/Z-P, originating from an overpromotion effect for both catalysts.
However, when both promoted catalysts were washed (FeP/Z-W and Fe/Z–P-W)
to remove the excess of promoters, the activity was much higher. Fe/Z-P-W
simultaneously achieved low selectivity toward methane as part of
the promoters were still present after washing, whereas for FeP/Z-W
the majority of promoters was removed upon washing, which increased
the methane selectivity. Moreover, due to the addition of Na+S promoters,
the iron nanoparticles in the FeP/Z(-W) catalysts had grown considerably
during catalysis, while those in Fe/Z-P(-W) and Fe/Z(-W) remained
relatively stable. Lastly, as a large broadening of particle sizes
for the used FeP/Z-W was found, where particle sizes had both increased
and decreased, Ostwald ripening is suggested for particle growth accelerated
by the presence of the promoters.
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Affiliation(s)
- N. A. Krans
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - J. L. Weber
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - W. van den Bosch
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - J. Zečević
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - P. E. de Jongh
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - K. P. de Jong
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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102
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Rajesh UC, Losovyj Y, Chen CH, Zaleski JM. Designing Synergistic Nanocatalysts for Multiple Substrate Activation: Interlattice Ag–Fe3O4 Hybrid Materials for CO2-Inserted Lactones. ACS Catal 2020. [DOI: 10.1021/acscatal.9b04260] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- U. Chinna Rajesh
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Yaroslav Losovyj
- Molecular Structure Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Chun-Hsing Chen
- Molecular Structure Center, Indiana University, Bloomington, Indiana 47405, United States
| | - Jeffrey M. Zaleski
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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103
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Yang J, Fang X, Xu Y, Liu X. Investigation of the deactivation behavior of Co catalysts in Fischer–Tropsch synthesis using encapsulated Co nanoparticles with controlled SiO2 shell layer thickness. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02557j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The deactivation behavior of Co catalysts was clearly elucidated using Co nanoparticles confined by a porous SiO2 shell layer with varying thickness and different reaction temperatures.
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Affiliation(s)
- Jinglin Yang
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- 214122 Wuxi
- P.R. China
| | - Xuejin Fang
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- 214122 Wuxi
- P.R. China
| | - Yuebing Xu
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- 214122 Wuxi
- P.R. China
| | - Xiaohao Liu
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- 214122 Wuxi
- P.R. China
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104
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Fan C, Yang L, Luo L, Wu Z, Qin Z, Zhu H, Fan W, Wang J. A highly active Pd/H-ZSM-5 catalyst in lean methane combustion prepared via a sol–gel method and treated by reduction–oxidation. NEW J CHEM 2020. [DOI: 10.1039/d0nj00212g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reduction–oxidation treatment can reconstruct Pd nanoparticles, strengthen metal–support interactions and enhance catalytic performance of Pd/H-ZSM-5 in methane combustion.
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Affiliation(s)
- Chao Fan
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Shanxi 030001
- P. R. China
| | - Li Yang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Shanxi 030001
- P. R. China
| | - Li Luo
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Shanxi 030001
- P. R. China
| | - Zhiwei Wu
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Shanxi 030001
- P. R. China
| | - Zhangfeng Qin
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Shanxi 030001
- P. R. China
| | - Huaqing Zhu
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Shanxi 030001
- P. R. China
| | - Weibin Fan
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Shanxi 030001
- P. R. China
| | - Jianguo Wang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Shanxi 030001
- P. R. China
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105
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Rolly GS, Meyerstein D, Yardeni G, Bar-Ziv R, Zidki T. New insights into HER catalysis: the effect of nano-silica support on catalysis by silver nanoparticles. Phys Chem Chem Phys 2020; 22:6401-6405. [DOI: 10.1039/c9cp06820a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nano-silica support affects the activity of silver nanoparticles towards the hydrogen evolution reaction by (CH3)2COH˙ radicals.
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Affiliation(s)
- Gifty Sara Rolly
- Department of Chemical Sciences
- The Center for Radical Reactions and the Schlesinger Family Center for Compact Accelerators
- Radiation Sources and Applications
- Ariel University
- Ariel
| | - Dan Meyerstein
- Department of Chemical Sciences
- The Center for Radical Reactions and the Schlesinger Family Center for Compact Accelerators
- Radiation Sources and Applications
- Ariel University
- Ariel
| | - Guy Yardeni
- Department of Chemistry
- Nuclear Research Centre Negev
- Beer-Sheva
- Israel
| | - Ronen Bar-Ziv
- Department of Chemistry
- Nuclear Research Centre Negev
- Beer-Sheva
- Israel
| | - Tomer Zidki
- Department of Chemical Sciences
- The Center for Radical Reactions and the Schlesinger Family Center for Compact Accelerators
- Radiation Sources and Applications
- Ariel University
- Ariel
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106
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Wang X, Song S, Zhang H. A redox interaction-engaged strategy for multicomponent nanomaterials. Chem Soc Rev 2020; 49:736-764. [DOI: 10.1039/c9cs00379g] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The review article focuses on the redox interaction-engaged strategy that offers a powerful way to construct multicomponent nanomaterials with precisely-controlled size, shape, composition and hybridization of nanostructures.
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Affiliation(s)
- Xiao Wang
- School of Chemical and Biological Engineering
- Seoul National University
- Seoul
- Republic of Korea
| | - Shuyan Song
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Hongjie Zhang
- State Key Laboratory of Rare Earth Resource Utilization
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
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107
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Ghogia AC, Cayez S, Machado BF, Nzihou A, Serp P, Soulantica K, Pham Minh D. Hydrogen Spillover in the Fischer‐Tropsch Synthesis on Carbon‐supported Cobalt Catalysts. ChemCatChem 2019. [DOI: 10.1002/cctc.201901934] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Amel C. Ghogia
- Université de Toulouse, IMT Mines Albi, UMR CNRS 5302 Centre RAPSODEE Campus Jarlard 81013 Albi cedex 09 France
- LPCNOUniversité de Toulouse, CNRS, INSA, UPS 135 avenue de Rangueil 31077 Toulouse France
- LCC, CNRS-UPR 8241, ENSIACETUniversité de Toulouse France
| | - Simon Cayez
- LPCNOUniversité de Toulouse, CNRS, INSA, UPS 135 avenue de Rangueil 31077 Toulouse France
| | - Bruno F. Machado
- Laboratory of Separation and Reaction Engineering – Laboratory of Catalysis and Materials (LSRE-LCM) Chemical Engineering Department, Faculty of EngineeringUniversity of Porto Rua Dr. Roberto Frias s/n 4200-465 Porto Portugal
| | - Ange Nzihou
- Université de Toulouse, IMT Mines Albi, UMR CNRS 5302 Centre RAPSODEE Campus Jarlard 81013 Albi cedex 09 France
| | - Philippe Serp
- LCC, CNRS-UPR 8241, ENSIACETUniversité de Toulouse France
| | - Katerina Soulantica
- LPCNOUniversité de Toulouse, CNRS, INSA, UPS 135 avenue de Rangueil 31077 Toulouse France
| | - Doan Pham Minh
- Université de Toulouse, IMT Mines Albi, UMR CNRS 5302 Centre RAPSODEE Campus Jarlard 81013 Albi cedex 09 France
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108
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Ultrastable Au nanoparticles on titania through an encapsulation strategy under oxidative atmosphere. Nat Commun 2019; 10:5790. [PMID: 31857592 PMCID: PMC6923380 DOI: 10.1038/s41467-019-13755-5] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 11/19/2019] [Indexed: 11/22/2022] Open
Abstract
Supported gold catalysts play a crucial role in the chemical industry; however, their poor on-stream stability because of the sintering of the gold nanoparticles restricts their practical application. The strong metal-support interaction (SMSI), an important concept in heterogeneous catalysis, may be applied to construct the structure of catalysts and, hence, improve their reactivity and stability. Here we report an ultrastable Au nanocatalyst after calcination at 800 °C, in which Au nanoparticles are encapsulated by a permeable TiOx thin layer induced by melamine under oxidative atmosphere. Owning to the formed TiOx overlayer, the resulting Au catalyst is resistant to sintering and exhibits excellent activity and stability for catalytic CO oxidation. Furthermore, this special strategy can be extended to colloidal Au nanoparticles supported on TiO2 and commercial gold catalyst denoted as RR2Ti, providing a universal way to engineer and develop highly stable supported Au catalysts with tunable activity. Sintering-resistant Au nanoparticles are highly desirable due to their low Tammann temperature. Here, the authors report an ultrastable titania-supported Au nanocatalyst through an encapsulation strategy under oxidative atmosphere.
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109
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van Deelen TW, Hernández Mejía C, de Jong KP. Control of metal-support interactions in heterogeneous catalysts to enhance activity and selectivity. Nat Catal 2019. [DOI: 10.1038/s41929-019-0364-x] [Citation(s) in RCA: 652] [Impact Index Per Article: 130.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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110
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Liu L, Asano T, Nakagawa Y, Tamura M, Okumura K, Tomishige K. Selective Hydrogenolysis of Glycerol to 1,3-Propanediol over Rhenium-Oxide-Modified Iridium Nanoparticles Coating Rutile Titania Support. ACS Catal 2019. [DOI: 10.1021/acscatal.9b03824] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Lujie Liu
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Takehiro Asano
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1 Aoba, Aramaki,
Aoba-ku, Sendai 980-0845, Japan
| | - Masazumi Tamura
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1 Aoba, Aramaki,
Aoba-ku, Sendai 980-0845, Japan
| | - Kazu Okumura
- Department of Applied Chemistry, Faculty of Engineering, Kogakuin University, 2665-1 Nakano-machi, Hachioji, Tokyo 192-0015, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1 Aoba, Aramaki,
Aoba-ku, Sendai 980-0845, Japan
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111
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Hartman T, Geitenbeek RG, Whiting GT, Weckhuysen BM. Operando monitoring of temperature and active species at the single catalyst particle level. Nat Catal 2019. [DOI: 10.1038/s41929-019-0352-1] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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112
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Qin C, Hou B, Wang J, Wang G, Ma Z, Jia L, Li D. Stabilizing Optimal Crystalline Facet of Cobalt Catalysts for Fischer-Tropsch Synthesis. ACS APPLIED MATERIALS & INTERFACES 2019; 11:33886-33893. [PMID: 31498584 DOI: 10.1021/acsami.9b10174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Developing efficient catalysts with a stable optimal crystalline facet is highly promising yet challenging for the Fischer-Tropsch synthesis (FTS). Here, we demonstrate a coating strategy to fabricate a stable optimal cobalt-facet catalyst. The catalyst (Co@C-SiO2) is composed of a single crystalline core, a wrapped carbon layer, and an amorphous silica shell. The moderate metal-support interaction endowed by carbon, combining the confined effect of the silica shell, protects and maintains the single-crystal structure and optimal crystalline facet of the core, that is, Co(10-11). Due to the unique core-shell nanostructure and optimal cobalt facets, our Co@C-SiO2 catalyst shows a remarkable low methane selectivity (5.3%), high activity (TOF = 4.0 × 10-2 s-1), C5+ selectivity (88.9%), and more importantly, excellent stability (TOS = 168 h) in FTS.
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Affiliation(s)
- Chuan Qin
- State Key Laboratory of Coal Conversion , Institute of Coal Chemistry, Chinese Academy of Sciences , Taiyuan 030001 , Shanxi , PR China
- University of Chinese Academy of Sciences , Beijing 100049 , PR China
| | - Bo Hou
- State Key Laboratory of Coal Conversion , Institute of Coal Chemistry, Chinese Academy of Sciences , Taiyuan 030001 , Shanxi , PR China
| | - Jungang Wang
- State Key Laboratory of Coal Conversion , Institute of Coal Chemistry, Chinese Academy of Sciences , Taiyuan 030001 , Shanxi , PR China
| | - Gang Wang
- Max Planck Institute for Polymer Research , Ackermannweg 10 , 55128 Mainz , Germany
| | - Zhongyi Ma
- State Key Laboratory of Coal Conversion , Institute of Coal Chemistry, Chinese Academy of Sciences , Taiyuan 030001 , Shanxi , PR China
| | - Litao Jia
- State Key Laboratory of Coal Conversion , Institute of Coal Chemistry, Chinese Academy of Sciences , Taiyuan 030001 , Shanxi , PR China
| | - Debao Li
- State Key Laboratory of Coal Conversion , Institute of Coal Chemistry, Chinese Academy of Sciences , Taiyuan 030001 , Shanxi , PR China
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113
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Li J, Lin Y, Pan X, Miao D, Ding D, Cui Y, Dong J, Bao X. Enhanced CO2 Methanation Activity of Ni/Anatase Catalyst by Tuning Strong Metal–Support Interactions. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00401] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jian Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yaping Lin
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiulian Pan
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning China
| | - Dengyun Miao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning China
| | - Ding Ding
- Vacuum Interconnected Nanotech Workstation, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Yi Cui
- Vacuum Interconnected Nanotech Workstation, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Jinhu Dong
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinhe Bao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning China
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114
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Liu Z, Li J, Buettner M, Ranganathan RV, Uddi M, Wang R. Metal-Support Interactions in CeO 2- and SiO 2-Supported Cobalt Catalysts: Effect of Support Morphology, Reducibility, and Interfacial Configuration. ACS APPLIED MATERIALS & INTERFACES 2019; 11:17035-17049. [PMID: 30977630 DOI: 10.1021/acsami.9b02455] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
With the increasing demand for highly efficient and durable catalysts, researchers have been doing extensive research to engineer the shape, size, and even phase (e.g., hcp or fcc Co) of individual catalyst nanoparticles, as well as the interface structure between the catalyst and support. In this work, cobalt oxides were deposited on ceria with rod-like morphology (CeO2NR) and cube-like morphology (CeO2NC) and silica with sphere-like morphology (SiO2NS) via a precipitation-deposition method to investigate the effects of support morphology, surface defects, support reducibility, and the metal-support interactions on redox and catalytic properties. XRD, Raman, XPS, BET, H2-TPR, O2-TPD, CO-TPD, TEM, and TPR/TPO cycling measurements have been mainly employed for catalysts characterization. Compared with CeO2NC and SiO2NS supports, as well as CeO2NC- and SiO2NS-supported cobalt catalysts, CeO2NR counterparts exhibited enhanced reducibility and CO oxidation performance at a lower temperature. Both the apparent activation energy and CO conversion demonstrated the following catalytic activity order: 10 wt % CoO x/CeO2NR > 10 wt % CoO x/CeO2NC > 10 wt % CoO x/SiO2NS. These results showed a strong support-dependent reducibility, CO oxidation, and redox cycling activity/stability of the as-prepared catalysts. Moreover, the significantly enhanced catalytic CO oxidation of the 10 wt % CoO x/CeO2NR catalyst indicated the vital role of CeO2NR support with rich surface oxygen vacancies, superior oxygen storage capacity and mobility, and excellent adsorption/desorption behavior of CO and O2 species.
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115
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Li Y, Lu J, Wang X, Zhang H, Wu X, Zhang KHL, Ye J, Zhan D. Direct Conversion of Methanol to Ethanol on the Metal‐Carbon Interface. ChemCatChem 2019. [DOI: 10.1002/cctc.201900437] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yunhua Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy Materials Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 P. R. China
| | - Junfeng Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy Materials Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 P. R. China
| | - Xihui Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy Materials Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 P. R. China
| | - Hua Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy Materials Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 P. R. China
| | - Xuee Wu
- State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy Materials Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 P. R. China
| | - Kelvin H. L. Zhang
- State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy Materials Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 P. R. China
| | - Jinyu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy Materials Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 P. R. China
| | - Dongping Zhan
- State Key Laboratory of Physical Chemistry of Solid Surfaces Collaborative Innovation Centre of Chemistry for Energy Materials Department of Chemical and Biochemical Engineering College of Chemistry and Chemical EngineeringXiamen University Xiamen 361005 P. R. China
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116
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Hainer A, Marina N, Rincon S, Costa P, Lanterna AE, Scaiano JC. Highly Electrophilic Titania Hole as a Versatile and Efficient Photochemical Free Radical Source. J Am Chem Soc 2019; 141:4531-4535. [PMID: 30830774 DOI: 10.1021/jacs.8b13422] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Photogenerated holes in nanometric semiconductors, such as TiO2, constitute remarkable powerful electrophilic centers, capable of capturing an electron from numerous donors such as ethers, or nonactivated substrates like toluene or acetonitrile, and constitute an exceptionally clean and efficient source of free radicals. In contrast with typical free radical precursors, semiconductors generate single radicals (rather than pairs), where the precursors can be readily removed by filtration or centrifugation after use, thus making it a convenient tool in organic chemistry. The process can be described as an example of dystonic proton coupled electron transfer.
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Affiliation(s)
- Andrew Hainer
- Department of Chemistry and Biomolecular Sciences and Centre for Advanced Materials Research (CAMaR) , University of Ottawa , Ottawa K1N 6N5 , Canada
| | - Nancy Marina
- Department of Chemistry and Biomolecular Sciences and Centre for Advanced Materials Research (CAMaR) , University of Ottawa , Ottawa K1N 6N5 , Canada
| | - Stefanie Rincon
- Department of Chemistry and Biomolecular Sciences and Centre for Advanced Materials Research (CAMaR) , University of Ottawa , Ottawa K1N 6N5 , Canada
| | - Paolo Costa
- Department of Chemistry and Biomolecular Sciences and Centre for Advanced Materials Research (CAMaR) , University of Ottawa , Ottawa K1N 6N5 , Canada
| | - Anabel E Lanterna
- Department of Chemistry and Biomolecular Sciences and Centre for Advanced Materials Research (CAMaR) , University of Ottawa , Ottawa K1N 6N5 , Canada
| | - Juan C Scaiano
- Department of Chemistry and Biomolecular Sciences and Centre for Advanced Materials Research (CAMaR) , University of Ottawa , Ottawa K1N 6N5 , Canada
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117
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Patelli N, Migliori A, Morandi V, Pasquini L. One-Step Synthesis of Metal/Oxide Nanocomposites by Gas Phase Condensation. NANOMATERIALS 2019; 9:nano9020219. [PMID: 30736375 PMCID: PMC6409555 DOI: 10.3390/nano9020219] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 01/29/2019] [Accepted: 02/02/2019] [Indexed: 11/16/2022]
Abstract
Metallic nanoparticles (NPs), either supported on a porous oxide framework or finely dispersed within an oxide matrix, find applications in catalysis, plasmonics, nanomagnetism and energy conversion, among others. The development of synthetic routes that enable to control the morphology, chemical composition, crystal structure and mutual interaction of metallic and oxide phases is necessary in order to tailor the properties of this class of nanomaterials. With this work, we aim at developing a novel method for the synthesis of metal/oxide nanocomposites based on the assembly of NPs formed by gas phase condensation of metal vapors in a He/O2 atmosphere. This new approach relies on the independent evaporation of two metallic precursors with strongly different oxidation enthalpies. Our goal is to show that the precursor with less negative enthalpy gives birth to metallic NPs, while the other to oxide NPs. The selected case study for this work is the synthesis of a Fe-Co/TiOx nanocomposite, a system of great interest for its catalytic and magnetic properties. By exploiting the new concept, we achieve the desired target, i.e., a nanoscale dispersion of metallic alloy NPs within titanium oxide NPs, the structure of which can be tailored into TiO1-δ or TiO2 by controlling the synthesis and processing atmosphere. The proposed synthesis technique is versatile and scalable for the production of many NPs-assembled metal/oxide nanocomposites.
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Affiliation(s)
- Nicola Patelli
- Department of Physics and Astronomy, Alma Mater Studiorum Università di Bologna, Viale Berti-Pichat 6/2, 40127 Bologna, Italy.
| | - Andrea Migliori
- Section of Bologna, Institute of Microelectronics and Microsystems, National Research Council, Via Gobetti 101, 40129 Bologna, Italy.
| | - Vittorio Morandi
- Section of Bologna, Institute of Microelectronics and Microsystems, National Research Council, Via Gobetti 101, 40129 Bologna, Italy.
| | - Luca Pasquini
- Department of Physics and Astronomy, Alma Mater Studiorum Università di Bologna, Viale Berti-Pichat 6/2, 40127 Bologna, Italy.
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118
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He X, Wang Y, Zhang X, Dong M, Wang G, Zhang B, Niu Y, Yao S, He X, Liu H. Controllable in Situ Surface Restructuring of Cu Catalysts and Remarkable Enhancement of Their Catalytic Activity. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04812] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Xiaohui He
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People’s Republic of China
| | - Yong Wang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Xun Zhang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Mei Dong
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, People’s Republic of China
| | - Guofu Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, People’s Republic of China
| | - Bingsen Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
| | - Yiming Niu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
| | - Siyu Yao
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Xin He
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
| | - Haichao Liu
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People’s Republic of China
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119
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Fang Z, Murayama H, Zhao Q, Liu B, Jiang F, Xu Y, Tokunaga M, Liu X. Selective mild oxidation of methane to methanol or formic acid on Fe–MOR catalysts. Catal Sci Technol 2019. [DOI: 10.1039/c9cy01640f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective oxidation of methane to methanol or formic acid was achieved using mordenite (MOR)-supported iron catalysts with H2O2 as the oxidant.
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Affiliation(s)
- Zhihao Fang
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Haruno Murayama
- Department of Chemistry
- Graduate School of Science
- Kyushu University
- Fukuoka
- Japan
| | - Qi Zhao
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Bing Liu
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Feng Jiang
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Yuebing Xu
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Makoto Tokunaga
- Department of Chemistry
- Graduate School of Science
- Kyushu University
- Fukuoka
- Japan
| | - Xiaohao Liu
- Department of Chemical Engineering
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
- P. R. China
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