Development of Cu foam-based Ni catalyst for solar thermal reforming of methane with carbon dioxide

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• 作者：Jianzhong Qi^a ; Yanping Sun^b ; ^{Yanping.Sun@csiro.au" class="auth_mail" title="E-mail the corresponding author} ; Zongli Xie^c ; Mike Collins^b ; Hao Du^a ; Tianying Xiong^a
• 关键词：Cu foam-based Ni catalyst ; Monolithic catalyst ; Solar thermal reforming of methane
• 刊名：Journal of Energy Chemistry
• 出版年：2015
• 出版时间：November 2015
• 年：2015
• 卷：24
• 期：6
• 页码：786-793
• 全文大小：2267 K

文摘

Using solar energy to produce syngas via the endothermic reforming of methane has been extensively investigated at the laboratory- and pilot plant-scales as a promising method of storing solar energy. One of the challenges to scaling up this process in a tubular reformer is to improve the reactor's performance, which is limited by mass and heat transfer issues. High thermal conductivity Cu foam was therefore used as a substrate to improve the catalyst's thermal conductivity during solar reforming. We also developed a method to coat the foam with the catalytically active component NiMg₃AlO_x. The Cu foam-based NiMg₃AlO_x performs better than catalysts supported on SiSiC foam, which is currently used as a substrate for solar-reforming catalysts, at high gas hourly space velocity (≥400,000 mL/(g·h)) or at low reaction temperatures (≤ 720 °C). The presence of a γ-Al₂O₃ intermediate layer improves the adhesion between the catalyst and substrate as well as the catalytic activity.