1
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Wu F, Wang Y, Fei S, Zhu G. Co-Promoted CoNi Bimetallic Nanocatalyst for the Highly Efficient Catalytic Hydrogenation of Olefins. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1939. [PMID: 37446455 DOI: 10.3390/nano13131939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/29/2023] [Accepted: 04/03/2023] [Indexed: 07/15/2023]
Abstract
Bimetallic catalysts, especially non-noble metals, hold great potential for substituting for noble metals in catalytic hydrogenation. In present study, a series of CoxNiy (x + y = 6) bimetallic catalysts were prepared through the impregnation-reduction method and cyclohexene was chosen as probe-molecule to study the promotion effect of Co on the catalytic olefin hydrogenation reactions. Meanwhile, density functional theory (DFT) was utilized to investigate the formation energies and the charge distribution of CoNi bimetals, as well as the transition state (TS) searches for hydrogen dissociation and migration. The results suggest that bimetals tend to have superior catalytic performance than pure metals, and Co3Ni3 shows the highest catalytic activity on the cyclohexene hydrogenation. It was found that the charge transfer from Co to Ni and the alloying give rise to the refinement of CoNi grains and the improvement of its catalytic activity and stability. Thus, it may be possible to obtain better catalytic performance by tuning the metal/metal atomic ratio of bimetals.
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Affiliation(s)
- Fei Wu
- Wuhan Institute of Marine Electric Propulsion, Wuhan 430064, China
| | - Yueying Wang
- School of Materials Science & Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Shunxin Fei
- School of Materials Science & Engineering, Anhui University of Technology, Maanshan 243002, China
| | - Gang Zhu
- Wuhan Institute of Marine Electric Propulsion, Wuhan 430064, China
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2
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Kominami H, Yato R, Tanaka A. Hydrogen‐free hydrogenation of a nitrogen‐containing ring of quinolines in an alcoholic suspension of a titanium(IV) oxide photocatalyst modified with metal cocatalysts. ChemCatChem 2022. [DOI: 10.1002/cctc.202200674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroshi Kominami
- Kindai University: Kinki Daigaku Applied Chemistry Kowakae 5778502 Higashiosaka JAPAN
| | - Ryuichi Yato
- Kindai University: Kinki Daigaku Applied Chemistry JAPAN
| | - Atsuhiro Tanaka
- Kindai University: Kinki Daigaku Applied Chemistry Kowakae 5778502 Higashiosaka JAPAN
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3
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El‐Shahat M. Advances in the reduction of quinolines to 1,2,3,4‐tetrahydroquinolines. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Mahmoud El‐Shahat
- Photochemistry Department Chemical Industries Research Institute, National Research Centre, Scopus affiliation ID 60014618 Giza Egypt
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4
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Puche M, Liu L, Concepción P, Sorribes I, Corma A. Tuning the Catalytic Performance of Cobalt Nanoparticles by Tungsten Doping for Efficient and Selective Hydrogenation of Quinolines under Mild Conditions. ACS Catal 2021; 11:8197-8210. [PMID: 35633841 PMCID: PMC9131458 DOI: 10.1021/acscatal.1c01561] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/09/2021] [Indexed: 12/13/2022]
Abstract
![]()
Non-noble
bimetallic CoW nanoparticles (NPs) partially embedded
in a carbon matrix (CoW@C) have been prepared by a facile hydrothermal
carbon-coating methodology followed by pyrolysis under an inert atmosphere.
The bimetallic NPs, constituted by a multishell core–shell
structure with a metallic Co core, a W-enriched shell involving Co7W6 alloyed structures, and small WO3 patches partially covering the surface of these NPs, have been established
as excellent catalysts for the selective hydrogenation of quinolines
to their corresponding 1,2,3,4-tetrahydroquinolines under mild conditions
of pressure and temperature. It has been found that this bimetallic
catalyst displays superior catalytic performance toward the formation
of the target products than the monometallic Co@C, which can be attributed
to the presence of the CoW alloyed structures.
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Affiliation(s)
- Marta Puche
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain
| | - Lichen Liu
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain
| | - Patricia Concepción
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain
| | - Iván Sorribes
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain
| | - Avelino Corma
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain
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5
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Li S, Cao R, Xu M, Deng Y, Lin L, Yao S, Liang X, Peng M, Gao Z, Ge Y, Liu JX, Li WX, Zhou W, Ma D. Atomically dispersed Ir/α-MoC catalyst with high metal loading and thermal stability for water-promoted hydrogenation reaction. Natl Sci Rev 2021; 9:nwab026. [PMID: 35111329 PMCID: PMC8794590 DOI: 10.1093/nsr/nwab026] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 12/13/2022] Open
Abstract
Synthesis of atomically dispersed catalysts with high metal loading and thermal stability is challenging but particularly valuable for industrial application in heterogeneous catalysis. Here, we report a facile synthesis of a thermally stable atomically dispersed Ir/α-MoC catalyst with metal loading as high as 4 wt%, an unusually high value for carbide supported metal catalysts. The strong interaction between Ir and the α-MoC substrate enables high dispersion of Ir on the α-MoC surface, and modulates the electronic structure of the supported Ir species. Using quinoline hydrogenation as a model reaction, we demonstrate that this atomically dispersed Ir/α-MoC catalyst exhibits remarkable reactivity, selectivity and stability, for which the presence of high-density isolated Ir atoms is the key to achieving high metal-normalized activity and mass-specific activity. We also show that the water-promoted quinoline hydrogenation mechanism is preferred over the Ir/α-MoC, and contributes to high selectivity towards 1,2,3,4-tetrahydroquinoline. The present work demonstrates a new strategy in constructing a high-loading atomically dispersed catalyst for the hydrogenation reaction.
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Affiliation(s)
- Siwei Li
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University, Beijing 100871, China
| | - Ruochen Cao
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University, Beijing 100871, China
| | - Mingquan Xu
- School of Physical Sciences and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuchen Deng
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University, Beijing 100871, China
| | - Lili Lin
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University, Beijing 100871, China
| | - Siyu Yao
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University, Beijing 100871, China
| | - Xuan Liang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University, Beijing 100871, China
| | - Mi Peng
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University, Beijing 100871, China
| | - Zirui Gao
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University, Beijing 100871, China
| | - Yuzhen Ge
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University, Beijing 100871, China
| | - Jin-Xun Liu
- School of Chemistry and Materials Science, CAS Excellence Center for Nanoscience, Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Wei-Xue Li
- School of Chemistry and Materials Science, CAS Excellence Center for Nanoscience, Hefei National Laboratory for Physical Sciences at the Microscale, iChEM, University of Science and Technology of China, Hefei 230026, China
| | - Wu Zhou
- School of Physical Sciences and CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing 100049, China
- CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ding Ma
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering and College of Engineering, and BIC-ESAT, Peking University, Beijing 100871, China
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6
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Kokane R, Corre Y, Kemnitz E, Dongare MK, Agbossou-Niedercorn F, Michon C, Umbarkar SB. Palladium supported on magnesium hydroxyl fluoride: an effective acid catalyst for the hydrogenation of imines and N-heterocycles. NEW J CHEM 2021. [DOI: 10.1039/d1nj03760a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Heterogeneous palladium catalysts were prepared for the effective hydrogenation of imines and N-heterocycles at low loadings without any acid additive.
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Affiliation(s)
- Reshma Kokane
- Catalysis Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
- Academy of Scientific and Innovative Research, CSIR, Ghaziabad-201002, India
| | - Yann Corre
- Univ. Lille, CNRS, Centrale Lille Institut, Univ. Artois, UCCS UMR 8181 – Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
- Centrale Lille, Bat C7, Cité Scientifique, CS20048, 59651 Villeneuve d'Ascq Cedex, France
| | - Erhard Kemnitz
- Institute of Chemistry, Humboldt University, Brook-Taylor-Straße 2, 12489 Berlin, Germany
| | | | - Francine Agbossou-Niedercorn
- Univ. Lille, CNRS, Centrale Lille Institut, Univ. Artois, UCCS UMR 8181 – Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
- Centrale Lille, Bat C7, Cité Scientifique, CS20048, 59651 Villeneuve d'Ascq Cedex, France
| | - Christophe Michon
- Univ. Lille, CNRS, Centrale Lille Institut, Univ. Artois, UCCS UMR 8181 – Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
- Centrale Lille, Bat C7, Cité Scientifique, CS20048, 59651 Villeneuve d'Ascq Cedex, France
- Université de Strasbourg, Université de Haute-Alsace, Ecole Européenne de Chimie, Polymères et Matériaux, CNRS, LIMA, UMR 7042, 25 rue Becquerel, 67087, Strasbourg, France
| | - Shubhangi B. Umbarkar
- Catalysis Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune-411008, India
- Academy of Scientific and Innovative Research, CSIR, Ghaziabad-201002, India
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7
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Murugesan K, Chandrashekhar VG, Kreyenschulte C, Beller M, Jagadeesh RV. A General Catalyst Based on Cobalt Core–Shell Nanoparticles for the Hydrogenation of N‐Heteroarenes Including Pyridines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202004674] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Kathiravan Murugesan
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Str. 29a 18059 Rostock Germany
| | | | | | - Matthias Beller
- Leibniz-Institut für Katalyse e. V. Albert-Einstein-Str. 29a 18059 Rostock Germany
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8
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Murugesan K, Chandrashekhar VG, Kreyenschulte C, Beller M, Jagadeesh RV. A General Catalyst Based on Cobalt Core-Shell Nanoparticles for the Hydrogenation of N-Heteroarenes Including Pyridines. Angew Chem Int Ed Engl 2020; 59:17408-17412. [PMID: 32543735 PMCID: PMC7540604 DOI: 10.1002/anie.202004674] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Indexed: 11/08/2022]
Abstract
Herein, we report the synthesis of specific silica-supported Co/Co3 O4 core-shell based nanoparticles prepared by template synthesis of cobalt-pyromellitic acid on silica and subsequent pyrolysis. The optimal catalyst material allows for general and selective hydrogenation of pyridines, quinolines, and other heteroarenes including acridine, phenanthroline, naphthyridine, quinoxaline, imidazo[1,2-a]pyridine, and indole under comparably mild reaction conditions. In addition, recycling of these Co nanoparticles and their ability for dehydrogenation catalysis are showcased.
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Affiliation(s)
| | | | | | - Matthias Beller
- Leibniz-Institut für Katalyse e. V.Albert-Einstein-Str. 29a18059RostockGermany
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9
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Yun R, Zhan F, Li N, Zhang B, Ma W, Hong L, Sheng T, Du L, Zheng B, Liu S. Fe Single Atoms and Fe 2O 3 Clusters Liberated from N-Doped Polyhedral Carbon for Chemoselective Hydrogenation under Mild Conditions. ACS APPLIED MATERIALS & INTERFACES 2020; 12:34122-34129. [PMID: 32631045 DOI: 10.1021/acsami.0c09124] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
In the area of catalysis, selective reduction of nitro compounds to amino compounds is a colossal challenge due to the existence of competitive reducible functional groups. Herein, an Fe-based catalyst FeSAs/Fe2O3ACs/N-doped polyhedral carbon (NPC) has been designed and synthesized. As we expected, compared with FeSAs and FeNPs, FeSAs/Fe2O3ACs/NPC shows excellent catalytic performance (turnover frequency up to 1923 h-1, calculated with nitrobenzene), chemoselectivity, and tolerance during the hydrogenation reaction of nitro compounds under room temperature because of the synergistic effects between FeSAs and Fe2O3ACs. The theoretical calculations show that FeSAs prefers to undergo hydrazine decomposition to generate hydrogen and the Fe2O3ACs surface is more active toward the nitrobenzene reduction to aniline.
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Affiliation(s)
- Ruirui Yun
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 214001, P. R. China
| | - Feiyang Zhan
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 214001, P. R. China
| | - Na Li
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 214001, P. R. China
| | - Beibei Zhang
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 214001, P. R. China
| | - Wanjiao Ma
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 214001, P. R. China
| | - Lirui Hong
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 214001, P. R. China
| | - Tian Sheng
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 214001, P. R. China
| | - Liting Du
- Advanced Analysis and Testing Center, Nanjing Forestry University, Nanjing 210037, P. R. China
| | - Baishu Zheng
- Key Laboratory of Theoretical Chemistry and Molecular Simulation, Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, P. R. China
| | - Shoujie Liu
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 214001, P. R. China
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10
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Jia WG, Gao LL, Wang ZB, Wang JJ, Sheng EH, Han YF. NHC-Palladium(II) Mononuclear and Binuclear Complexes Containing Phenylene-Bridged Bis(thione) Ligands: Synthesis, Characterization, and Catalytic Activities. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00091] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Wei-Guo Jia
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou 350002, People’s Republic of China
| | - Li-Li Gao
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Zhi-Bao Wang
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Jing-Jing Wang
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - En-Hong Sheng
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, People’s Republic of China
| | - Ying-Feng Han
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou 350002, People’s Republic of China
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, People’s Republic of China
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11
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Hervochon J, Dorcet V, Junge K, Beller M, Fischmeister C. Convenient synthesis of cobalt nanoparticles for the hydrogenation of quinolines in water. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00582g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Easily accessible cobalt nanoparticles are prepared by hydrolysis of NaBH4 in the presence of inexpensive Co(ii) salts.
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Affiliation(s)
- Julien Hervochon
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
| | - Vincent Dorcet
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
| | - Kathrin Junge
- Leibniz-Institut für Katalyse
- Albert-Einstein-Straße 29a
- Rostock
- Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse
- Albert-Einstein-Straße 29a
- Rostock
- Germany
| | - Cedric Fischmeister
- Univ Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
- France
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12
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Yun R, Hong L, Ma W, Zhang R, Zhan F, Duan J, Zheng B, Wang S. Co Nanoparticles Encapsulated in Nitrogen Doped Carbon Tubes for Efficient Hydrogenation of Quinoline under Mild Conditions. ChemCatChem 2019. [DOI: 10.1002/cctc.201901641] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ruirui Yun
- The Key Laboratory of Functional Molecular Solids (Ministry of Education) College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241000 P. R. China
| | - Lirui Hong
- The Key Laboratory of Functional Molecular Solids (Ministry of Education) College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241000 P. R. China
| | - Wanjiao Ma
- The Key Laboratory of Functional Molecular Solids (Ministry of Education) College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241000 P. R. China
| | - Ruiyu Zhang
- The Key Laboratory of Functional Molecular Solids (Ministry of Education) College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241000 P. R. China
| | - Feiyang Zhan
- The Key Laboratory of Functional Molecular Solids (Ministry of Education) College of Chemistry and Materials ScienceAnhui Normal University Wuhu 241000 P. R. China
| | - Jingui Duan
- College of Chemical EngineeringNanjing Tech University Nanjing 210001 P. R. China
| | - Baishu Zheng
- School of Chemistry and Chemical EngineeringHunan University of Science and Technology Xiangtan 411201 P. R. China
| | - Suna Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical EngineeringLiaocheng University Liaocheng 252059 P. R. China
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13
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Jin T, Terada M, Bao M, Yamamoto Y. Catalytic Performance of Nanoporous Metal Skeleton Catalysts for Molecular Transformations. CHEMSUSCHEM 2019; 12:2936-2954. [PMID: 30811897 DOI: 10.1002/cssc.201900318] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 02/26/2019] [Indexed: 06/09/2023]
Abstract
Nanoporous metal (MNPore) skeleton catalysts have attracted increasing attention in the field of green and sustainable heterogeneous catalysis owing to their unique three-dimensional nanopore structural features. In general, MNPores are fabricated through chemical or electrochemical corrosive dealloying of monolithic alloys. The dealloying process produces various MNPores with an open nanoporous network structure by formation of concave and convex hyperboloid-like ligaments. The large surface-to-volume ratio compared to bulk metals and high density of steps and kinks on ligaments of the unsupported MNPores make them promising heterogeneous catalyst candidates for highly active and selective molecular transformations. In this context, a variety of heterogeneous catalytic reactions using MNPores as nanocatalysts under gas- and liquid-phase conditions were developed over the last decade. In addition, the bulk metallic shape and mechanistic rigidity of the MNPore catalysts make the processes of catalyst recovery and reuse more facile and greener. This Minireview mainly focuses on the catalytic performance of nanoporous Au, Pd, Cu, and AuPd with respect to the achievements on catalytic applications in various molecular transformations.
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Affiliation(s)
- Tienan Jin
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Azaaoba Aoba-ku, Sendai, Miyagi, 980-8578, Japan
- State Key Laboratory of Fine Chemicals and School of Chemistry, Dalian University of Technology, Dalian, 116023, P.R. China
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, 6-3 Aramaki Azaaoba Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Azaaoba Aoba-ku, Sendai, Miyagi, 980-8578, Japan
| | - Ming Bao
- State Key Laboratory of Fine Chemicals and School of Chemistry, Dalian University of Technology, Dalian, 116023, P.R. China
| | - Yoshinori Yamamoto
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Azaaoba Aoba-ku, Sendai, Miyagi, 980-8578, Japan
- State Key Laboratory of Fine Chemicals and School of Chemistry, Dalian University of Technology, Dalian, 116023, P.R. China
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14
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Recent advances in heterogeneous catalytic hydrogenation and dehydrogenation of N-heterocycles. CHINESE JOURNAL OF CATALYSIS 2019. [DOI: 10.1016/s1872-2067(19)63336-x] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Butt M, Zhao Y, Feng X, Lu Y, Jin T, Yamamoto Y, Bao M. Unsupported Nanoporous Gold‐Catalyzed Chemoselective Reduction of Quinolines Using Formic Acid as a Hydrogen Source. ChemistrySelect 2019. [DOI: 10.1002/slct.201901309] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Madiha Butt
- State Key Laboratory of Fine ChemicalsDalian University of Technology Dalian 116023 China
| | - Yuhui Zhao
- State Key Laboratory of Fine ChemicalsDalian University of Technology Dalian 116023 China
| | - Xiujuan Feng
- State Key Laboratory of Fine ChemicalsDalian University of Technology Dalian 116023 China
| | - Ye Lu
- State Key Laboratory of Fine ChemicalsDalian University of Technology Dalian 116023 China
- Present Address: Inner Mongolia Key Laboratory of Carbon NanomaterialsNano Innovation Institute (NII) College of Chemistry and Chemical EngineeringInner Mongolia University for Nationalities Tongliao 028000 China
| | - Tienan Jin
- Department of ChemistryGraduate School of ScienceTohoku University Sendai 980–8577 Japan
| | - Yoshinori Yamamoto
- State Key Laboratory of Fine ChemicalsDalian University of Technology Dalian 116023 China
- Department of ChemistryGraduate School of ScienceTohoku University Sendai 980–8577 Japan
| | - Ming Bao
- State Key Laboratory of Fine ChemicalsDalian University of Technology Dalian 116023 China
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16
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Muthukrishnan I, Sridharan V, Menéndez JC. Progress in the Chemistry of Tetrahydroquinolines. Chem Rev 2019; 119:5057-5191. [PMID: 30963764 DOI: 10.1021/acs.chemrev.8b00567] [Citation(s) in RCA: 229] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Tetrahydroquinoline is one of the most important simple nitrogen heterocycles, being widespread in nature and present in a broad variety of pharmacologically active compounds. This Review summarizes the progress achieved in the chemistry of tetrahydroquinolines, with emphasis on their synthesis, during the period from mid-2010 to early 2018.
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Affiliation(s)
- Isravel Muthukrishnan
- Department of Chemistry, School of Chemical and Biotechnology , SASTRA Deemed University , Thanjavur 613401 , Tamil Nadu , India
| | - Vellaisamy Sridharan
- Department of Chemistry, School of Chemical and Biotechnology , SASTRA Deemed University , Thanjavur 613401 , Tamil Nadu , India.,Department of Chemistry and Chemical Sciences , Central University of Jammu , Rahya-Suchani (Bagla) , District-Samba, Jammu 181143 , Jammu and Kashmir , India
| | - J Carlos Menéndez
- Unidad de Química Orgańica y Farmacéutica, Departamento de Química en Ciencias Farmacéuticas, Facultad de Farmacia , Universidad Complutense , 28040 Madrid , Spain
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17
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Sorribes I, Liu L, Doménech-Carbó A, Corma A. Nanolayered Cobalt–Molybdenum Sulfides as Highly Chemo- and Regioselective Catalysts for the Hydrogenation of Quinoline Derivatives. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04260] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Iván Sorribes
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain
| | - Lichen Liu
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain
| | - Antonio Doménech-Carbó
- Departament de Química Analítica, Universitat de València, Dr. Moliner, 50, 46100 Burjassot (Valencia), Spain
| | - Avelino Corma
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain
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18
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Charistoudi E, Kallitsakis MG, Charisteidis I, Triantafyllidis KS, Lykakis IN. Selective Reduction of Azines to Benzyl Hydrazones with Sodium Borohydride Catalyzed by Mesoporous Silica-Supported Silver Nanoparticles: A Catalytic Route towards Pyrazole Synthesis. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700442] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Evangelia Charistoudi
- Department of Chemistry; Aristotle University of Thessaloniki; Thessaloniki 54124 Greece
| | - Michael G. Kallitsakis
- Department of Chemistry; Aristotle University of Thessaloniki; Thessaloniki 54124 Greece
| | - Ioannis Charisteidis
- Department of Chemistry; Aristotle University of Thessaloniki; Thessaloniki 54124 Greece
| | - Kostas S. Triantafyllidis
- Department of Chemistry; Aristotle University of Thessaloniki; Thessaloniki 54124 Greece
- Chemical Process and Energy Resources Institute, CERTH; 6th km. Charilaou-Thermi rd. 57001 Thessaloniki Greece
| | - Ioannis N. Lykakis
- Department of Chemistry; Aristotle University of Thessaloniki; Thessaloniki 54124 Greece
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19
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Guo M, Li C, Yang Q. Accelerated catalytic activity of Pd NPs supported on amine-rich silica hollow nanospheres for quinoline hydrogenation. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00394c] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ultra-small Pd NPs stabilized by the amine-rich silica hollow nanosphere with a TOF as high as 5052 h−1 are among the most active solid catalysts for quinoline hydrogenation. The high catalytic activity could be mainly attributed to the ultra-small particle size and high surface electron density of Pd NPs.
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Affiliation(s)
- Miao Guo
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Can Li
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Qihua Yang
- State Key Laboratory of Catalysis
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
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20
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Kaneda K, Mizugaki T. Design of High-Performance Heterogeneous Catalysts using Apatite Compounds for Liquid-Phase Organic Syntheses. ACS Catal 2016. [DOI: 10.1021/acscatal.6b02585] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kiyotomi Kaneda
- Research
Center for Solar Energy Chemistry, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
- Department
of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - Tomoo Mizugaki
- Department
of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
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21
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Gold Particles Supported on Amino-Functionalized Silica Catalyze Transfer Hydrogenation of N-Heterocyclic Compounds. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201601147] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Sun B, Carnevale D, Süss-Fink G. Selective N-cycle hydrogenation of quinolines with sodium borohydride in aqueous media catalyzed by hectorite-supported ruthenium nanoparticles. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2016.07.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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23
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Zhang L, Qiu R, Xue X, Pan Y, Xu C, Li H, Xu L. Versatile (Pentamethylcyclopentadienyl)rhodium-2,2′-Bipyridine (Cp*Rh-bpy) Catalyst for Transfer Hydrogenation of N-Heterocycles in Water. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500491] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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24
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Dell’Anna MM, Romanazzi G, Intini S, Rizzuti A, Leonelli C, Piccinni AF, Mastrorilli P. A polymer supported palladium(II) β-ketoesterate complex as active and recyclable pre-catalyst for selective reduction of quinolines in water with sodium borohydride. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.03.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Tao L, Zhang Q, Li SS, Liu X, Liu YM, Cao Y. Heterogeneous Gold-Catalyzed Selective Reductive Transformation of Quinolines with Formic Acid. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201400721] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Liu X, He L, Liu YM, Cao Y. Supported gold catalysis: from small molecule activation to green chemical synthesis. Acc Chem Res 2014; 47:793-804. [PMID: 24328524 DOI: 10.1021/ar400165j] [Citation(s) in RCA: 156] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
With diminishing natural resources, there is an ever-increasing demand for cost-effective and sustainable production of fine and commodity chemicals. For this purpose, there is a need for new catalytic methods that can permit efficient and targeted conversion of fossil and biorenewable feedstocks with lower energy requirements and environmental impact. A significant number of industrial catalytic processes are performed by platinum-group-metal (PGM)-based heterogeneous catalysts capable of activating a range of important small molecules, such as CO, O2, H2, and N2. In contrast, there is a general feeling that gold (Au) cannot act as an efficient catalyst because of its inability to activate most molecules, which is essential to any catalytic processes. As a consequence, researchers have long neglected the potential for use of gold as a catalyst. In recent years, however, chemists have put forth tremendous effort and progress in the use of supported gold catalysts to facilitate a variety of useful synthetic transformations. The seminal discovery by Haruta in 1987 that suitably prepared Au-based catalysts were surprisingly active for CO oxidation even at 200 K initiated rapid development of the field. Since then, researchers have widely employed Au-based catalysts in many types of mild chemical processes, with special focus on selective reactions involving small molecules (for example, CO, H2O, O2, or H2) as a reactant. That gold in the form of tiny nanoparticles (NPs, generally less than 5 nm in diameter) can subtly activate the reactant molecules under mild conditions has been evoked to explain the superior effectiveness of gold compared with conventional PGMs. In this context, Au-based catalysts are gaining great significance in developing new green processes with improved selectivity and energy minimization. In this Account, we describe our efforts toward the development of a range of green and selective processes largely through the appropriate choice of Au catalysts coupled with the coactivation of a plethora of simple small molecules. We have focused on developing new mild and selective reductive transformations that can offer efficient alternatives to conventional Au-catalyzed hydrogenation processes. We have demonstrated Au-catalyzed selective transformation involving HCOOH activation, Au-catalyzed selective reduction involving CO and H2O activation, and Au-catalyzed C-N/C-C bond formation via alcohol activation with high selectivity. The interplay between the support and gold plays a critical role in the success of these transformations, thus highlighting the crucial importance of support in tuning the performance of supported Au NPs. Most of the reactions can tolerate a range of functional groups, and some can occur under ambient conditions. Depending on the specific process, we propose several mechanistic scenarios that describe the plausible small-molecule-mediated reaction pathways. Additionally, we have observed an unusual reactant-promoted H2O or H2 activation over supported Au NPs, thus offering new strategies for green and facile synthesis of diverse amides and heteroaromatic nitrogen compounds. We anticipate that key insights into how simple small molecules are activated for further reaction over Au NPs should lead to a better understanding of gold catalysis and the development of new innovative PGM-free technologies.
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Affiliation(s)
- Xiang Liu
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Lin He
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Yong-Mei Liu
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
| | - Yong Cao
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People’s Republic of China
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27
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Yan M, Jin T, Chen Q, Ho HE, Fujita T, Chen LY, Bao M, Chen MW, Asao N, Yamamoto Y. Unsupported Nanoporous Gold Catalyst for Highly Selective Hydrogenation of Quinolines. Org Lett 2013; 15:1484-7. [DOI: 10.1021/ol400229z] [Citation(s) in RCA: 93] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Mei Yan
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan, and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
| | - Tienan Jin
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan, and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
| | - Qiang Chen
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan, and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
| | - Hon Eong Ho
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan, and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
| | - Takeshi Fujita
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan, and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
| | - Lu-Yang Chen
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan, and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
| | - Ming Bao
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan, and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
| | - Ming-Wei Chen
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan, and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
| | - Naoki Asao
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan, and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
| | - Yoshinori Yamamoto
- WPI-Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan, and State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, China
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28
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A novel catalyst Pd@ompg-C 3 N 4 for highly chemoselective hydrogenation of quinoline under mild conditions. J Catal 2013. [DOI: 10.1016/j.jcat.2012.10.018] [Citation(s) in RCA: 184] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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29
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Mao H, Ma J, Liao Y, Zhao S, Liao X. Using plant tannin as natural amphiphilic stabilizer to construct an aqueous–organic biphasic system for highly active and selective hydrogenation of quinoline. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00108c] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Ren D, He L, Yu L, Ding RS, Liu YM, Cao Y, He HY, Fan KN. An Unusual Chemoselective Hydrogenation of Quinoline Compounds Using Supported Gold Catalysts. J Am Chem Soc 2012; 134:17592-8. [DOI: 10.1021/ja3066978] [Citation(s) in RCA: 154] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Dong Ren
- Department of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, Fudan University, Handan Road 220, Shanghai 200433, P. R. China
| | - Lin He
- Department of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, Fudan University, Handan Road 220, Shanghai 200433, P. R. China
| | - Lei Yu
- Department of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, Fudan University, Handan Road 220, Shanghai 200433, P. R. China
| | - Ran-Sheng Ding
- Department of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, Fudan University, Handan Road 220, Shanghai 200433, P. R. China
| | - Yong-Mei Liu
- Department of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, Fudan University, Handan Road 220, Shanghai 200433, P. R. China
| | - Yong Cao
- Department of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, Fudan University, Handan Road 220, Shanghai 200433, P. R. China
| | - He-Yong He
- Department of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, Fudan University, Handan Road 220, Shanghai 200433, P. R. China
| | - Kang-Nian Fan
- Department of Chemistry, Shanghai Key Laboratory of
Molecular Catalysis and Innovative Materials, Fudan University, Handan Road 220, Shanghai 200433, P. R. China
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31
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Sankar M, He Q, Morad M, Pritchard J, Freakley SJ, Edwards JK, Taylor SH, Morgan DJ, Carley AF, Knight DW, Kiely CJ, Hutchings GJ. Synthesis of stable ligand-free gold-palladium nanoparticles using a simple excess anion method. ACS NANO 2012; 6:6600-6613. [PMID: 22769042 DOI: 10.1021/nn302299e] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report a convenient excess anion modification and post-reduction step to the impregnation method which permits the reproducible preparation of supported bimetallic AuPd nanoparticles having a tight particle size distribution comparable to that found for sol-immobilization materials but without the complication of ligands adsorbed on the particle surface. The advantageous features of the modified impregnation materials compared to those made by conventional impregnation include a smaller average particle size, an optimized random alloy composition, and improved compositional uniformity from particle-to-particle resulting in higher activity and stability compared to the catalysts prepared using both conventional impregnation and sol immobilization methods. Detailed STEM combined with EDX analyses of individual particles have revealed that an increase in anion concentration increases the gold content of individual particles in the resultant catalyst, thus providing a method to control/tune the composition of the nanoalloy particles. The improved activity and stability characteristics of these new catalysts are demonstrated using (i) the direct synthesis of hydrogen peroxide and (ii) the solvent-free aerobic oxidation of benzyl alcohol as case studies.
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32
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Wu J, Wang C, Tang W, Pettman A, Xiao J. The remarkable effect of a simple ion: iodide-promoted transfer hydrogenation of heteroaromatics. Chemistry 2012; 18:9525-9. [PMID: 22736573 DOI: 10.1002/chem.201201517] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Jianjun Wu
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, UK
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33
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Yamauchi Y, Itagaki T, Yokoshima T, Kuroda K. Preparation of Ni nanoparticles between montmorillonite layers utilizing dimethylaminoborane as reducing agent. Dalton Trans 2012; 41:1210-5. [DOI: 10.1039/c1dt11395j] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Mikami Y, Noujima A, Mitsudome T, Mizugaki T, Jitsukawa K, Kaneda K. Highly Efficient Gold Nanoparticle Catalyzed Deoxygenation of Amides, Sulfoxides, and Pyridine N-Oxides. Chemistry 2011; 17:1768-72. [DOI: 10.1002/chem.201003109] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2010] [Indexed: 11/09/2022]
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