Morphology-dependent support effect of PdCu/alpha-Fe2O3 catalysts on Suzuki-Miyaura cross-coupling reaction--颗粒学报PARTICUOLOGY

Zhang, Y., Dai, C., Fan, H., Chen, J., Gao, L., & Zhang, B. (2024). Morphology-dependent support effect of PdCu/alpha-Fe2O3 catalysts on Suzuki-Miyaura cross-coupling reaction. Particuology, 94, 274-280. https://doi.org/10.1016/j.partic.2024.08.007

Morphology-dependent support effect of PdCu/alpha-Fe₂O₃ catalysts on Suzuki-Miyaura cross-coupling reaction

Ying Zhang^{a b 1}, Chengshan Dai^{b c 1}, Hongyu Fan^{a b}, Junnan Chen^{b c}, Li Gao^{b c}, Bingsen Zhang^{b c *}

a School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun, 113001, China b Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China c School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China

10.1016/j.partic.2024.08.007

Volume 94, November 2024, Pages 274-280

Received 15 July 2024, Revised 9 August 2024, Accepted 9 August 2024, Available online 29 August 2024, Version of Record 12 September 2024.

E-mail: bszhang@imr.ac.cn

Highlights

• Size of PdCu NPs can be influenced by the morphology of α-Fe₂O₃ support.

• PdCu NPs on α-Fe₂O₃-R support possess smaller size and more low coordination Pd sites.

• PdCu/α-Fe₂O₃-R catalysts exhibit superior catalytic performance for Suzuki-Miyaura cross-coupling reaction.

Abstract

The palladium-catalyzed Suzuki-Miyaura cross-coupling (SMC) reaction has received worldwide attention as a powerful and convenient synthetic tool for the formation of biaryl compounds. However, these reactions are highly dependent on the activity and stable of catalysts. Herein, the support morphology-dependent catalytic performance of SMC reactions was investigated. The truncated hexagonal bipyramid (α-Fe₂O₃-O) and rod-shaped morphologies of alpha-Fe₂O₃ (α-Fe₂O₃-R) were used as support to prepare PdCu nanoparticles (NPs) catalysts by NaBH₄ reduction method. For PdCu/α-Fe₂O₃-R catalysts, the smaller size of PdCu NPs and more low coordination Pd sites leading to its superior catalytic performance for SMC reactions. Furthermore, it can be easily recycled through centrifugation and reused several times without obvious loss on its catalytic performance. Identical location transmission electron microscopy method was used to investigate the structural evolution of PdCu/α-Fe₂O₃-R catalysts. The results found that its structure almost unchanged during the catalytic reaction.

Graphical abstract

Keywords

Support morphology; α-Fe₂O₃;PdCu; Suzuki-Miyaura cross-coupling; IL-TEM method

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