Low-Temperature Nonoxidative Dehydrogenation of Propane over Sn-promoted Mo-Y Zeolite: Catalytic performance and nature of the active sites

•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.