Jang, Ji Soo Lee, Min-Woo Lee, Seok-Ho Jeong, Eun-Suk Park, Tae In Lee, Kwan-Young 2025-07-29T07:00:27Z 2025-07-29T07:00:27Z 2025-07-28 2025-09 1385-8947 https://pubs.kist.re.kr/handle/201004/152868 Rhenium was introduced to enhance the catalytic activity of the Pt/Al2O3 catalyst for perhydro-dibenzyltoluene dehydrogenation. The 2Pt-yRe/Al2O3 catalysts, synthesized using a sequential impregnation method, exhibited superior performance in perhydro-dibenzyltoluene dehydrogenation compared to 2Pt/Al2O3 catalysts. To elucidate the effects of rhenium oxides, various characterizations were conducted, including analyses of the structural properties of 2Pt-yRe/Al2O3 catalysts, hydrogen spillover, and electron transfer effects. Furthermore, in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) revealed hydrogen spillover phenomena on the catalyst surface during perhydro-dibenzyltoluene dehydrogenation. Additionally, hydrogen temperature-programmed desorption (H2-TPD) and density functional theory (DFT) calculations confirmed the spontaneous release of hydrogen on the rhenium oxide surface. These findings suggest that the addition of rhenium to the Pt/Al2O3 catalyst enhances the perhydro-dibenzyltoluene dehydrogenation activity through hydrogen spillover and pumping effects. English Elsevier BV Dissecting the role of hydrogen pumping by rhenium oxide in enhancing the dehydrogenation of perhydro-dibenzyltoluene on Pt/Al2O3 Article 10.1016/j.cej.2025.164863 1 Chemical Engineering Journal, v.519 Chemical Engineering Journal 519 N scie scopus 001522474600003 2-s2.0-105009264157 Engineering, Environmental Engineering, Chemical Engineering Article CATALYTIC-PROPERTIES FUEL-CELL PLATINUM METHYLCYCLOHEXANE TOLUENE 1,3-PROPANEDIOL TEMPERATURE PERFORMANCE CONVERSION METAL-SUPPORT INTERACTIONS Rhenium oxide Hydrogen spillover Density functional theory Dehydrogenation Liquid organic hydrogen carriers