Citation: Juhong Lian, Yuchao Chai, Yu Qi, Xiangyang Guo, Naijia Guan, Landong Li, Fuxiang Zhang. Unexpectedly selective hydrogenation of phenylacetylene to styrene on titania supported platinum photocatalyst under 385 nm monochromatic light irradiation[J]. Chinese Journal of Catalysis, ;2020, 41(4): 598-603. doi: S1872-2067(19)63453-4 shu

Unexpectedly selective hydrogenation of phenylacetylene to styrene on titania supported platinum photocatalyst under 385 nm monochromatic light irradiation

a School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tianjin 300350, China;
b State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy, Dalian 116023, Liaoning, China

Received Date: 11 November 2019
Revised Date: 30 November 2019

Fund Project: This work was supported by the National Natural Science Foundation of China (21633009), Dalian Science Foundation for Distinguished Young Scholars (2017RJ02), and the Liaoning Revitalization Talents Program (XLYC1807241).

Conversion of alkynes to alkenes by photocatalysis has inspired extensive interest, but it is still challenging to obtain both high conversion and selectivity. Here we first demonstrate the photocatalytic conversion of phenylacetylene (PLE) to styrene (STE) with both high conversion and selectivity by using the titania (TiO₂) supported platinum (Pt) as photocatalyst under 385 nm monochromatic light irradiation. It is demonstrated that the conversion rate of PLE is strongly dependent on the content of Pt cocatalyst loaded on the surface of TiO₂. Based on our optimization, the conversion of PLE and the selectivity towards STE on the 1 wt% Pt/TiO₂ photocatalyst can unexpectedly reach as high as 92.4% and 91.3%, respectively. The highly selective photocatalytic hydrogenation can well be extended to the conversion of other typical alkynes to alkenes, demonstrating the generality of selective hydrogenation of C≡C over the Pt/TiO₂ photocatalyst.
- Phenylacetylene,
- Titania,
- Selective Hydrogenation,
- Photocatalysis,
- Cocatalyst
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