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Catalysts 2018, 8(3), 106; https://doi.org/10.3390/catal8030106

Effects of Mesopore Internal Surfaces on the Structure of Immobilized Pd-Bisphosphine Complexes Analyzed by Variable-Temperature XAFS and Their Catalytic Performances

1
Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 4259-G1-14 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8502, Japan
2
Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi 332-0012, Japan
3
Division of Electronic Structure, Department of Materials Molecular Science, Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
4
Materials Sciences Research Center, Japan Atomic Energy Agency, 1-1-1 Sayo-cho Koto, Sayo-gun 679-5148, Japan
5
Graduate School of Arts and Sciences, International Christian University, Mitaka, Tokyo 181-8585, Japan
*
Author to whom correspondence should be addressed.
Received: 29 January 2018 / Revised: 2 March 2018 / Accepted: 5 March 2018 / Published: 9 March 2018
(This article belongs to the Special Issue Porous Materials in Catalysis)
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Abstract

In this study, mesoporous and nonporous silica-supported Pd complexes were synthesized and characterized. Variable-temperature XAFS measurements and a curve-fitting analysis showed a slightly larger contribution of σ2static when the Pd complexes were on a nonporous support in comparison to a mesoporous support. In contrast, the catalytic performance of the attached Pd complex in the Suzuki-Miyaura cross-coupling reaction was not affected by such small differences in the static disorder of the Pd complex. View Full-Text
Keywords: mesoporous silica; palladium complex; XAFS; Suzuki-Miyaura coupling reaction mesoporous silica; palladium complex; XAFS; Suzuki-Miyaura coupling reaction
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Motokura, K.; Fukuda, T.; Uemura, Y.; Matsumura, D.; Ikeda, M.; Nambo, M.; Chun, W.-J. Effects of Mesopore Internal Surfaces on the Structure of Immobilized Pd-Bisphosphine Complexes Analyzed by Variable-Temperature XAFS and Their Catalytic Performances. Catalysts 2018, 8, 106.

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