Selective Cleavage of α‑Olefins to Produce Acetylene and Hydrogen

Acetylene production from mixed α-olefins emerges as a potentially green and energy-efficient approach with significant scientific value in the selective cleavage of C–C bonds. On the Pd(100) surface, it is experimentally revealed that C2 to C4 α-olefins undergo selective thermal cleavage to form su...

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Veröffentlicht in:Journal of the American Chemical Society 2024-05, Vol.146 (18), p.12850-12856
Hauptverfasser: Xu, Meijia, Hu, Zheng-Yang, Liang, Xiaoyang, Zhu, Yifan, Ding, Honghe, Hu, Jun, Xu, Jinfeng, Zhu, Zhen, Wu, Zi-ang, Zhao, Xinwei, Guo, Weijun, Nie, Kaiqi, Ye, Yifan, Zhu, Junfa, Liu, Zhi-Pan, Zhou, Xiong, Wu, Kai
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Sprache:eng
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Zusammenfassung:Acetylene production from mixed α-olefins emerges as a potentially green and energy-efficient approach with significant scientific value in the selective cleavage of C–C bonds. On the Pd(100) surface, it is experimentally revealed that C2 to C4 α-olefins undergo selective thermal cleavage to form surface acetylene and hydrogen. The high selectivity toward acetylene is attributed to the 4-fold hollow sites which are adept at severing the terminal double bonds in α-olefins to produce acetylene. A challenge arises, however, because acetylene tends to stay at the Pd(100) surface. By using the surface alloying methodology with alien Au, the surface Pd d-band center has been successfully shifted away from the Fermi level to release surface-generated acetylene from α-olefins as a gaseous product. Our study actually provides a technological strategy to economically produce acetylene and hydrogen from α-olefins.
ISSN:0002-7863
1520-5126
DOI:10.1021/jacs.4c03524