title: Platinum-Tin Nano-Catalysts Supported on Alumina for Direct Dehydrogenation of n-Butane.
abstract: Al2O3 supports were prepared by a precipitation method using various basic solutions (NaOH, KOH, NH4OH, and Na2CO3) as precipitation agents, and Pt/Sn/Al2O3 nano-catalysts were then prepared by a sequential impregnation method. The prepared catalysts were applied to the direct dehydrogenation of n-butane to n-butenes and 1,3-butadiene. The effect of precipitation agents on the physicochemical properties and catalytic activities of Pt/Sn/Al2O3 nano-catalysts in the direct dehydrogenation of n-butane was investigated. Catalytic performance of Pt/Sn/Al2O3 nano-catalysts decreased in order of Pt/Sn/Al2O3 (NaOH) > Pt/Sn/Al2O3 (KOH) > Pt/Sn/Al2O3 (NH4OH) > Pt/Sn/Al2O3 (Na2CO3). Among the catalysts tested, Pt/Sn/Al2O3 (NaOH) nano-catalyst showed the best catalytic performance in terms of yield for total dehydrogenation products (TDP, n-butenes and 1,3-butadiene). Hydrogen chemisorption experiments revealed that platinum surface area of the catalyst was closely related to the catalytic performance. Yield for TDP increased with increasing platinum surface area of the catalyst.
authors.forename: Jong Kwon
authors.initials: JK
authors.lastname: Lee
authors.forename: Hyun
authors.initials: H
authors.lastname: Seo
authors.forename: Ung Gi
authors.initials: UG
authors.lastname: Hong
authors.forename: Gle
authors.initials: G
authors.lastname: Park
authors.forename: Yeonshick
authors.initials: Y
authors.lastname: Yoo
authors.forename: Jinsuk
authors.initials: J
authors.lastname: Lee
authors.forename: Hosik
authors.initials: H
authors.lastname: Chang
authors.forename: In Kyu
authors.initials: IK
authors.lastname: Song