Journal
NANO LETTERS
Volume 20, Issue 9, Pages 6865-6872Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.0c02940
Keywords
Local coordination environment; single atom catalyst; catalytic selectivity; Pt; propyne semihydrogenation
Categories
Funding
- National Natural Science Foundation of China [51922073, 21673150, 51802206]
- Natural Science Foundation of Jiangsu Province [BK20180097, BK20180846]
- Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO CIC)
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- 111 Project
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Single atom catalysts (SACs) have recently attracted great attention in heterogeneous catalysis and have been regarded as ideal models for investigating the strong interaction between metal and support. Despite the huge progress over the past decade, the deep understanding on the structure-performance correlation of SACs at a single atom level still remains to be a great challenge. In this study, we demonstrate that the variation in the coordination number of the Pt single atom can significantly promote the propylene selectivity during propyne semihydrogenation (PSH) for the first time. Specifically, the propylene selectivity greatly increases from 65.4% to 94.1% as the coordination number of Pt-O increases from similar to 3.4 to similar to 5, whereas the variation in the coordination number of Pt-O slightly influences the turnover frequency values of SACs. We anticipate that the present work may deepen the understanding on the structure-performance of SACs and also promote the fundamental research in single atom catalysis.
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