Highly Efficient Conversion of Homocoupling and Heterocoupling of Terminal Alkynes Catalyzed by AuCu24/AC‐200

Author:

Sun Ningning1,Yun Yapei1,Li Kaikai1,Ni Xin1,Qin Yao1,Yang Xiaofei1,Sheng Hongting1ORCID,Zhu Manzhou1

Affiliation:

1. Institutes of Physical Science and Information Technology and Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials Department of Chemistry and Centre for Atomic Engineering of Advanced Materials Key Laboratory of Structure and Functional Anhui University Hefei Anhui 230601 P. R. China

Abstract

AbstractRegulation of Hybrid Materials of Ministry of Education, Bimetallic nanoclusters with synergistic effect exhibit better stability and activity than monometallic nanoclusters in catalytic applications. However, the large number of ligands on the surface of nanoclusters obscure the active sites, thus reducing the catalytic activity. Here, AuCu24/AC−X (X=0, 200, 300, 500, 800) catalysts were fabricated by removing the partial ligands on the surface of AuCu24H22((p‐FPh)3P)12nanoclusters (short for AuCu24NCs), and investigated the influence of calcination temperature on catalytic performance of AuCu24/AC in homocoupling and heterocoupling of terminal alkynes. The results showed that the catalytic activity of AuCu24/AC−X exhibited a volcanic trend with the increase of X (heat treatment temperature) and the content of Cu2+also changed with the increase of X. Compared with Au25/AC‐200 and Cu25/AC‐200 catalysts, the AuCu24/AC‐200 bimetallic catalyst showed the highest catalytic activity in homocoupling and heterocoupling of terminal alkynes under mild conditions with TOF values reaching 478.7 h−1and 114.1 h−1respectively, which are higher than most reported catalysts. This work provides a research idea for the design of bimetallic nanoclusters with superior performance.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Anhui Province

Publisher

Wiley

Subject

Inorganic Chemistry

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