Gold Supported on Iron Oxide Nanodisk as Efficient Catalyst for The Removal of Toluene

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• 作者：Wen Han ; Jiguang Deng ; Shaohua Xie ; Huanggen Yang ; Hongxing Dai ; Chak Tong Au
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：March 5, 2014
• 年：2014
• 卷：53
• 期：9
• 页码：3486-3494
• 全文大小：620K
• 年卷期：v.53,no.9(March 5, 2014)
• ISSN：1520-5045

文摘

In the present study, nanodisk-like Fe₂O₃ was first prepared using the hydrothermal method, and then its supported gold catalysts (xAu/Fe₂O₃ nanodisk, x = 0.71鈥?.55 wt %) were fabricated using the polyvinyl alcohol-protected reduction method. Under the reaction conditions of toluene concentration = 1000 ppm, toluene/O₂ molar ratio = 1/400, and space velocity = 20鈥?00 mL/(g h), 6.55Au/Fe₂O₃ nanodisk performed the best (T_50% = 200 掳C and T_90% = 260 掳C). The apparent activation energies (46鈥?0 kJ/mol) obtained over the xAu/Fe₂O₃ nanodisk were smaller than that (65 kJ/mol) obtained over the Fe₂O₃ nanodisk for toluene oxidation. We conclude that the high oxygen adspecies concentration, good low-temperature reducibility, and strong interaction between Au nanoparticles and the Fe₂O₃ nanodisk are responsible for the high catalytic performance of the 6.55Au/Fe₂O₃ nanodisk.