@article{Tang2022, 
author = {Jun Tang and Bowen Jiao and Wei Chen and Fei Ruan and Fengfeng Li and Peixin Cui and Chao Wan and Minh Ngoc Ha and Van Noi Nguyen and Qingping Ke},
title = {Revealing efficient catalytic performance of N-CuOx for aerobic oxidative coupling of aliphatic alkynes: A Langmuir–Hinshelwood reaction mechanism},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {7},
pages = {6076-6083},
keywords = {N doped copper oxides (N-CuOx), straight chain alkynes, homo-coupling, additive-free, 1,3-diynes},
url = {https://www.sciopen.com/article/10.1007/s12274-022-4323-5},
doi = {10.1007/s12274-022-4323-5},
abstract = {Oxidative couplings of aliphatic alkynes are crucial for the production of naturally occurring 1,3-diynes. Herein we report the novel approach for effective synthesis of unsaturated coordinated N doped copper oxides (N-CuOx) catalyst, and uncover that N-CuOx catalyst as an additive-free and cost-effective heterogeneous catalyst has highly catalytic performance for directly oxidative coupling of aliphatic alkynes. The key to achieve efficient oxidative coupling of aliphatic alkynes is the synergistic effect of N species and uncoordinated O/Cu species caused by N dopants, which undergoes the Langmuir–Hinshelwood reaction mechanism. The N-CuOx catalyst displays ~ 89.1% yield for hexadeca-7,9-diyne under mild conditions and stable reusability (5 cycles), showing significant advances compared with the traditionally copper oxides. These findings highlight the heteroatom dopants that provide a new methodology for designing efficient copper catalysts in synthesis of naturally occurring 1,3-diynes.}
}