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Controlling Multiple Active Sites on Pd-CeO2 for Sequential C-C Cross-coupling and Alcohol Oxidation in One Reaction System

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Title
Controlling Multiple Active Sites on Pd-CeO2 for Sequential C-C Cross-coupling and Alcohol Oxidation in One Reaction System
Author(s)
Wonjae Ko; Kim, Ju Hee; Yim, Guk Hee; Seong Chan Lee; Kim, Sumin; Kwak, Minjoon; Choi, Hyunwoo; Kim, Jongchan; Wytse Hooch Antink; Jiheon Kim; Chan Woo Lee; Jinsol Bok; Yoon Jung; Lee, Eunwon; Lee, Kug-Seung; Cho, Sung-Pyo; Kim, Do Heui; Kim, Young Gyu; Byoung-Hoon Lee; Taeghwan Hyeon; Dongwon Yoo
Publication Date
2022-02
Journal
CHEMCATCHEM, v.14, no.4
Publisher
WILEY-V C H VERLAG GMBH
Abstract
Ceria (CeO2)-supported metal catalysts have been widely utilized for various single-step chemical transformations. However, using such catalysts for a multistep organic reaction in one reaction system has rarely been achieved. Here, we investigate multiple active sites on Pd-CeO2 catalysts and optimize them for a multistep reaction of C-C cross-coupling and alcohol oxidation. Atomic-level imaging and spectroscopic studies reveal that metallic Pd-0 and Pd-CeO2 interface are active sites on Pd-CeO2 for C-C cross-coupling and oxidation, respectively. These active sites are controlled under the structural evolution of Pd-CeO2 during reductive heat-treatments. Accordingly, we found that optimally reduced Pd-CeO2 catalysts containing similar to 1.5 nm-sized Pd nanoclusters with both sites in balance are ideal for multistep chemical transformations in one reaction system. Our strategy to design supported metal catalysts leads to one-pot sequential synthetic protocols for pharmaceutical building blocks.
URI
https://pr.ibs.re.kr/handle/8788114/12060
DOI
10.1002/cctc.202101760
ISSN
1867-3880
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > 1. Journal Papers (저널논문)
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