Direct Estimation of the Surface Location of Immobilized Functional Groups for Concerted Catalysis Using a Probe Molecule |
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| Authors: | Hiroto Noda Dr Ken Motokura Prof?Dr Yusuke Wakabayashi Kaori Sasaki Dr Hiroo Tajiri Dr Akimitsu Miyaji Dr Sho Yamaguchi Prof?Dr Toshihide Baba |
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| Affiliation: | 1. Department of Environmental Chemistry and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama, Japan;2. Division of Materials Physics, Graduate School of Engineering Science, Osaka University, Toyonaka, Japan;3. Japan Synchrotron Radiation Research Institute/SPring-8, Kouto, Sayo, Hyogo, Japan |
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| Abstract: | The location of active sites during concerted catalysis by a metal complex and tertiary amine on a SiO2 surface is discussed based on the interaction between the functionalized SiO2 surface and a probe molecule, p‐formyl phenylboronic acid. The interactions of the probe molecule with the surface functionalities, diamine ligand, and tertiary amine, were analyzed by FT‐IR and solid‐state 13C and 11B MAS NMR. For the catalyst exhibiting high 1,4‐addition activity, the diamine ligand and tertiary amine base exist in closer proximity than in the catalyst with low activity. |
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| Keywords: | active site distance amine heterogeneous concerted catalysis probe molecule |
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