Low temperature steam reforming of ethanol for carbon monoxide-free hydrogen production over mesoporous Sn-incorporated SBA-15 catalysts

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• 作者：Jun Sung Lee ; Gi Bo Han ; Misook Kang
• 关键词：Hydrogen production ; Carbon monoxide-free ; Ethanol steam reforming reaction ; Sn incorporated SBA-15
• 刊名：Energy
• 出版年：2012
• 出版时间：August, 2012
• 年：2012
• 卷：44
• 期：1
• 页码：248-256
• 全文大小：1147 K

文摘

This study investigated the application of a new metal catalytic species, Sn ion, rather than conventional Ni-based catalyst, to hydrogen production from ESR (ethanol steam reforming). Mesoporous SBA-15 catalysts with various contents of incorporated Sn (Sn-SBA-15) exhibited significantly higher ESR reactivity and the highest reactivity was achieved with 20?mol % Sn-SBA-15 catalysts: the H₂ production and ethanol conversion were maximized at 75 % and 92 % , respectively, at a mild temperature of 500?¡ãC for 1?h at a CH₃CH₂OH:H₂O ratio of 1:1 and a GHSV (gas hourly space velocity) of 6600?h^?1. The XRD (X-ray diffraction) and XPS (X-ray photoelectron spectroscopy) results indicated that the incorporated Sn species, SnO₂/Sn, was simultaneously transferred to Sn/SnO₂ by alternating their redox reactions and that the reactivity of the Sn-based activity could be long-lasting.