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Cai W, Sun X, Bao Y, Guo J, Liu A, Hu K, Feng L. Distinct morphology-dependent behaviors for Au/γ-Al 2O 3 catalysts: enhanced thermal stabilization in CO oxidation reaction. RSC Adv 2023; 13:9010-9019. [PMID: 36950074 PMCID: PMC10025884 DOI: 10.1039/d3ra00272a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 03/02/2023] [Indexed: 03/24/2023] Open
Abstract
The durability of supported metal catalysts usually suffers from sintering, the metal nanoparticles aggregating into larger sizes and subsequent loss of reactive surface, resulting in catalysts deactivation when heated at elevated temperatures. Herein, we investigate the evolution of Au species on different morphologies of γ-Al2O3 and surprisingly found vastly different behavior for the dispersion of surface Au nanoparticles. A nanorod-shaped γ-Al2O3 is prepared by the hydrothermal method resulting in an extraordinary catalyst support that can stabilize Au nanoparticles at annealing temperatures up to 700 °C. In contrast, the Au-supported catalyst prepared using commercial γ-Al2O3 shows a greater degree of inactivation under the same conditions. Remarkably, the unique morphology of such nanorod-shaped γ-Al2O3 is beneficial in preventing Au nanoparticles from sintering. The γ-Al2O3 nanorods are more effective than the commercial γ-Al2O3 at anchoring the Au nanoparticles. The results of X-ray photoelectron spectroscopy (XPS), in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and H2-TPR, reveal the interfacial interactions between Au nanoparticles and γ-Al2O3 nanorods, yielding a sinter-stability of the obtained Au/γ-Al2O3 nanorods catalyst. This synthetic strategy is simple and amenable to the large-scale manufacture of thermally stable γ-Al2O3 for industrial applications. Here, we investigate the morphology-dependent behavior of Au nanoparticles dispersed on different morphologies of γ-Al2O3. The result of X-ray photoelectron spectroscopy (XPS), in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and H2-TPR, reveal the interfacial interactions between Au nanoparticles and gamma alumina nanorods. Au nanoparticles on γ-Al2O3 nanorods exhibit higher sinter-resistant performance than those on commercial γ-Al2O3.
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Affiliation(s)
- Weimeng Cai
- School of Energy Materials and Chemical Engineering, Hefei University Hefei, 99 Jinxiu Rd Hefei 230601 Anhui People's Republic of China +86-551-62158315
| | - Xinyu Sun
- School of Energy Materials and Chemical Engineering, Hefei University Hefei, 99 Jinxiu Rd Hefei 230601 Anhui People's Republic of China +86-551-62158315
| | - Yaojie Bao
- School of Energy Materials and Chemical Engineering, Hefei University Hefei, 99 Jinxiu Rd Hefei 230601 Anhui People's Republic of China +86-551-62158315
| | - Jianhua Guo
- School of Energy Materials and Chemical Engineering, Hefei University Hefei, 99 Jinxiu Rd Hefei 230601 Anhui People's Republic of China +86-551-62158315
| | - Anqiu Liu
- School of Energy Materials and Chemical Engineering, Hefei University Hefei, 99 Jinxiu Rd Hefei 230601 Anhui People's Republic of China +86-551-62158315
| | - Kunhong Hu
- School of Energy Materials and Chemical Engineering, Hefei University Hefei, 99 Jinxiu Rd Hefei 230601 Anhui People's Republic of China +86-551-62158315
| | - Lipin Feng
- School of Energy Materials and Chemical Engineering, Hefei University Hefei, 99 Jinxiu Rd Hefei 230601 Anhui People's Republic of China +86-551-62158315
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Hong B, Liang JX, Sun X, Tian M, Huang F, Zheng Y, Lin J, Li L, Zhou Y, Wang X. Widening Temperature Window for CO Preferential Oxidation in H 2 by Ir Nanoparticles Interaction with Framework Fe of Hexaaluminate. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01010] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bilv Hong
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, Fujian, China
| | - Jin-Xia Liang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Xiucheng Sun
- Institute of Industrial Catalysis, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ming Tian
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Fei Huang
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, Fujian, China
| | - Ying Zheng
- Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, Fujian, China
| | - Jian Lin
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Lin Li
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
| | - Yanliang Zhou
- National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002, Fujian, China
| | - Xiaodong Wang
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
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Yan X, Gan T, Shi S, Du J, Xu G, Zhang W, Yan W, Zou Y, Liu G. Potassium-incorporated manganese oxide enhances the activity and durability of platinum catalysts for low-temperature CO oxidation. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01409a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Potassium-incorporated manganese oxide is demonstrated as an efficient support for fabricating highly active and stable Pt catalysts for low-temperature CO oxidation.
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Affiliation(s)
- Xuelan Yan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Tao Gan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Shaozhen Shi
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Juan Du
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun, 130103, China
| | - Guohao Xu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Wenxiang Zhang
- Institute of Physical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Wenfu Yan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Yongcun Zou
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Gang Liu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
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