One-step synthesis of dimethyl ether from syngas on ordered mesoporous copper incorporated alumina

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• 作者：Yan Wang^a ; ^b ; Yuexian Chen^a ; ^b ; Feng Yu^b ; Dahai Pan^b ; Binbin Fan^a ; ^b ; Jinghong Ma^a ; ^b ; Ruifeng Li^b ; ^{rfli@tyut.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Syngas ; Dimethyl ether ; Solution combustion ; Bifunctional catalyst
• 刊名：Journal of Energy Chemistry
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：25
• 期：5
• 页码：775-781
• 全文大小：1307 K

文摘

Ordered mesoporous copper incorporated Al₂O₃ (Cu/Al₂O₃) with high Cu dispersion were prepared by a facile solution combustion synthesis method using aluminum nitrate and copper nitrate as oxidants and urea as fuel. It is a facile and green route to synthesize catalysts for dimethyl ether directly from syngas. Cu/Al₂O₃ catalysts were characterized by XRD, N₂ adsorption–desorption, SEM-EDS, and H₂-TPR. The results indicate that the catalysts obtain an ordered mesoporous structure and copper is homogenously dispersed. The mesoporous Cu/Al₂O₃ catalysts were utilized as bifunctional catalysts in syngas to dimethyl ether reaction (STD). The copper content affects the catalytic performance in STD reaction. The CO conversion and DME selectivity of Cu/Al₂O₃ with 15% copper molar ratio achieve 52.9% and 66.1%, respectively. Moreover, the mesoporous Cu/Al₂O₃ catalysts show excellent stability in STD reaction.