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Nano Research 2016, 9(9): 2544-2550 https://doi.org/10.1007/s12274-016-1140-8
Research Article | Issue | Published: 27 June 2016

Pd3 cluster catalysis: Compelling evidence from in operando spectroscopic, kinetic, and density functional theory studies

Show Author's Information Chunlin Lv1,3,  Hao Cheng2,  Wei He3( ),  Muhammad Ishaq Ali Shah1,  Congqiao Xu1,  Xiangjian Meng1,  Lei Jiao1,  Shiqiang Wei2,  Jun Li1,  Lei Liu1,3,4( ),  Yadong Li1,4
Department of Chemistry and Collaborative Innovation Center for Nanomaterial Science and EngineeringTsinghua UniversityBeijing100084China
National Synchrotron Radiation Laboratory and Collaborative Innovation Center for Nanomaterial Science and EngineeringUniversity of Science and Technology of ChinaHefei230029China
Tsinghua-Peking Center for Life SciencesTsinghua UniversityBeijing100084China
Center of Advanced Nanocatalysis (CAN) and Collaborative Innovation Center for Nanomaterial Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
Keywords:
palladium, metal cluster catalysis, operando studies, active species, cycloisomerization
Cite this article:
Lv C, Cheng H, He W, et al. Pd3 cluster catalysis: Compelling evidence from in operando spectroscopic, kinetic, and density functional theory studies. Nano Research, 2016, 9(9): 2544-2550. https://doi.org/10.1007/s12274-016-1140-8
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Abstract Full text Electronic supplementary material About this article

Identification of metal cluster catalysis is a topic that is being investigated since a long time. Here, we report a Pd3 metal cluster catalytic reaction investigated by means of operando studies. We discovered that atomically defined tri-nuclear palladium (Pd3) is a surprisingly active catalyst for the cycloisomerization of 2-phenylethynylaniline. Operando 1H NMR spectroscopy and X-ray extended absorption fine structure (EXAFS) measurements have indicated that the structural integrity of such a catalyst remains intact throughout the reaction, which has also been confirmed by an ex situ X-ray photoelectron spectroscopy (XPS) study and catalyst recycling experiments. Kinetic data derived from operando IR spectroscopy measurements have shown that Pd3 is the active catalytic species. Density functional theory calculations have revealed a reaction pathway consistent with the kinetic data, further supported by NMR titration and X-ray crystal structure studies. Overall, the present study presents a clear example of metal cluster catalysis.


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About this article

Pd3 cluster catalysis: Compelling evidence from in operando spectroscopic, kinetic, and density functional theory studies

Show Author's information Chunlin Lv1,3, Hao Cheng2, Wei He3( ), Muhammad Ishaq Ali Shah1, Congqiao Xu1, Xiangjian Meng1, Lei Jiao1, Shiqiang Wei2, Jun Li1, Lei Liu1,3,4( ), Yadong Li1,4
Department of Chemistry and Collaborative Innovation Center for Nanomaterial Science and EngineeringTsinghua UniversityBeijing100084China
National Synchrotron Radiation Laboratory and Collaborative Innovation Center for Nanomaterial Science and EngineeringUniversity of Science and Technology of ChinaHefei230029China
Tsinghua-Peking Center for Life SciencesTsinghua UniversityBeijing100084China
Center of Advanced Nanocatalysis (CAN) and Collaborative Innovation Center for Nanomaterial Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China

Abstract

Identification of metal cluster catalysis is a topic that is being investigated since a long time. Here, we report a Pd3 metal cluster catalytic reaction investigated by means of operando studies. We discovered that atomically defined tri-nuclear palladium (Pd3) is a surprisingly active catalyst for the cycloisomerization of 2-phenylethynylaniline. Operando 1H NMR spectroscopy and X-ray extended absorption fine structure (EXAFS) measurements have indicated that the structural integrity of such a catalyst remains intact throughout the reaction, which has also been confirmed by an ex situ X-ray photoelectron spectroscopy (XPS) study and catalyst recycling experiments. Kinetic data derived from operando IR spectroscopy measurements have shown that Pd3 is the active catalytic species. Density functional theory calculations have revealed a reaction pathway consistent with the kinetic data, further supported by NMR titration and X-ray crystal structure studies. Overall, the present study presents a clear example of metal cluster catalysis.

Keywords: palladium, metal cluster catalysis, operando studies, active species, cycloisomerization

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Publication history
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Acknowledgements

Publication history

Received: 22 April 2016
Accepted: 03 May 2016
Published: 27 June 2016
Issue date: September 2016

Copyright

© Tsinghua University Press and Springer‐Verlag Berlin Heidelberg 2016

Acknowledgements

Acknowledgements

We thank the assistance in experiments and discussion by Tao Yao, Zhihu Sun, Dr. Dingsheng Wang, and Prof. Qing Peng. We thank the financial supports by the National Natural Science Foundation of China (Nos. 21221062 and 21521091) and the National Basic Research Program of China (973 program, No. 2013CB932800).

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