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High-Density Coordinatively Unsaturated Zn Catalyst for Efficient Alkane Dehydrogenation.
- Source :
-
Journal of the American Chemical Society [J Am Chem Soc] 2023 Sep 27; Vol. 145 (38), pp. 20936-20942. Date of Electronic Publication: 2023 Sep 13. - Publication Year :
- 2023
-
Abstract
- The exploration of non-noble metal catalysts for alkane dehydrogenation and their catalytic mechanisms is the priority in catalysis research. Here, we report a high-density coordinatively unsaturated Zn cation (Zn <subscript>cus</subscript> ) catalyst for the direct dehydrogenation (DDH) of ethylbenzene (EB) to styrene (ST). The catalyst demonstrated good catalytic performance (∼40% initial EB conversion rate and >98% ST selectivity) and excellent regeneration ability in the reaction, which is attributed to the high-density (HD) distribution and high-stability structure of Zn <subscript>cus</subscript> active sites on the surface of zinc silicate (HD-Zn <subscript>cus</subscript> @ZS). Density functional theory (DFT) calculations further illustrated the reaction pathway and intermediates, supporting that the Zn <subscript>cus</subscript> sites can efficiently activate the C-H bond of ethyl on ethylbenzene. Developing the high-density Zn <subscript>cus</subscript> catalyst and exploring the catalytic mechanism laid a good foundation for designing practical non-noble metal catalysts.
Details
- Language :
- English
- ISSN :
- 1520-5126
- Volume :
- 145
- Issue :
- 38
- Database :
- MEDLINE
- Journal :
- Journal of the American Chemical Society
- Publication Type :
- Academic Journal
- Accession number :
- 37703050
- Full Text :
- https://doi.org/10.1021/jacs.3c06311