Applied Energy 156 (2015) 331–343 Contents lists available at ScienceDirect Applied Energy journal homepage: www.elsevier.com/locate/apenergy Improving the stability of synthetic CaO-based CO sorbents by structural promoters a a,b,⇑ a,⇑ Andy Antzara , Eleni Heracleous , Angeliki A. Lemonidou Department of Chemical Engineering, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece School of Science & Technology, International Hellenic University (IHU), 14th km Thessaloniki – Moudania, 57001 Thessaloniki, Greece highl i ghts graphical a bstrac t CaO–ZrO prepared by sol–gel autocombustion shows outstanding 20.7% deactivation sorption performance. Promotion of CaO with Al and Zr 13.7% deactivation enhances activity and stability in CO sorption. Ca-Al-fresh Citric acid was identiﬁed as a suitable Ca-Al-used combustion agent for CaO-sorbent 45.4% deactivation synthesis. 100 sorption/desorption cycles Ca-Zr-66 Sorption: 650°C , 15% CO , 30 min Ca-Al-66 Pure CaO Desorption: 850°C , 100% N , 5min Ca-Zr-fresh Ca-Zr-used 0 10 203040 50607080 90 100 Number of cycle article i nfo abstract Article history: CaO-based materials are promising sorbents for CO capture via carbonate looping for high temperature Received 17 April 2015 applications, which however suffer from decreasing sorption capacity over multiple sorption/desorption Received in revised form 30 June 2015 cycles. In this study, we report
Applied Energy – Elsevier
Published: Oct 15, 2015
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