Low-Temperature Nonoxidative Dehydrogenation of Propane over Sn-promoted Mo-Y Zeolite: Catalytic performance and nature of the active sites
[Display omitted] •Olefins are by far the most valuable petrochemical intermediates, they are widely used as raw materials for polymers, plastics, fibres, etc.•A series of Mo-Sn based catalysts have been synthesized to explore the possibility of dehydrogenation at a lower temperature.•Extended X-ray...
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Published in | Fuel (Guildford) Vol. 323; p. 124350 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Kidlington
Elsevier Ltd
01.09.2022
Elsevier BV |
Subjects | |
Online Access | Get full text |
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Summary: | [Display omitted]
•Olefins are by far the most valuable petrochemical intermediates, they are widely used as raw materials for polymers, plastics, fibres, etc.•A series of Mo-Sn based catalysts have been synthesized to explore the possibility of dehydrogenation at a lower temperature.•Extended X-ray absorption fine structure analysis suggested the Mo-O and Sn-O species were highly dispersed.•No intermetallic interactions of Mo-Sn were observed by XAS studies.•A propylene yield of 40.94% was achieved at 450 °C over MoSn/Y catalyst.
Owing to its higher value and ever-growing market, the production of light olefins is more attractive for many refineries. Among the existing routes, on-purpose dehydrogenation technologies seek special attention for the production of light olefins. Here we report a Mo-based bi-metallic catalyst exhibiting highly selective, active and stable for the direct dehydrogenation of propane to propylene. A comprehensive surface study of the MoSn/Y catalyst has been acquired to understand the interatomic interactions between metals. Extended X-ray absorption fine structure analysis suggested the Mo-O species is highly dispersed along with Sn-O. The structure-yield relationship illustrates that the Pt does not affect the catalytic performance when compared to Pt free system. We achieved a 40.94% propylene yield over MoSn/Y catalyst with the gradual coke deposition rate of 5.4x10-3 gcoke.gcat-1.h−1. |
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ISSN: | 0016-2361 1873-7153 |
DOI: | 10.1016/j.fuel.2022.124350 |