CO preferential oxidation in a novel Au@ZrO₂ flow-through catalytic membrane reactor with high stability and efficiency

Zhu, Feng; Zhang, Yuting; Gu, Xuehong; Chen, Changlin; Jin, Wanqin; Ke, Xuebin

Abstract

CO preferential oxidation (CO-PROX) achieves much interest as a strategy to remove trace CO in reformed gases for hydrogen utilization. Herein, we reported a novel Au@ZrO₂ catalytic membrane reactor by embedding gold nano-particles in ZrO₂ hollow fiber membrane for CO-PROX. The flow-through catalytic membrane exhibited high catalytic activity and oxygen selectivity, which gave a turnover frequency of 4.73 s⁻¹ at 60 °C, 2–3 times higher than conventional catalyst pellets. CO conversion of >95% was achieved over the catalytic membrane, which maintained great operational stability during 500-h operation even CO₂ and H₂O were added in the feed stream. The excellent catalytic performance of the flow-through catalytic membrane makes gold catalyst possible for practical application in the removal of CO from hydrogen.

Citation

Zhu, F., Zhang, Y., Gu, X., Chen, C., Jin, W., & Ke, X. (2016). CO preferential oxidation in a novel Au@ZrO₂ flow-through catalytic membrane reactor with high stability and efficiency. International Journal of Hydrogen Energy, 41(31), 13513-13520. https://doi.org/10.1016/j.ijhydene.2016.05.210

• Journal Article Type: Article
• Acceptance Date: May 17, 2016
• Online Publication Date: Jun 8, 2016
• Publication Date: Aug 17, 2016
• Deposit Date: Feb 13, 2017
• Publicly Available Date: Nov 23, 2017
• Journal: International journal of hydrogen energy
• Print ISSN: 0360-3199
• Electronic ISSN: 0360-3199
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 41
• Issue: 31
• Pages: 13513-13520
• DOI: https://doi.org/10.1016/j.ijhydene.2016.05.210
• Keywords: Catalytic membrane reactor, Gold nano-particle, Hollow fiber, CO preferential oxidation, H₂ purification
• Public URL: https://hull-repository.worktribe.com/output/448059
• Publisher URL: http://www.sciencedirect.com/science/article/pii/S0360319916307662
• Additional Information: Authors' accepted manuscript of article published in: International journal of hydrogen energy, 2016, v.41, issue 31.
• Contract Date: Nov 23, 2017