Synthesis of CaO-Based Sorbents for CO2 Capture by a Spray-Drying Technique

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• 作者：Wenqiang Liu ; Junjun Yin ; Changlei Qin ; Bo Feng ; Minghou Xu
• 刊名：Environmental Science & Technology (ES&T)
• 出版年：2012
• 出版时间：October 16, 2012
• 年：2012
• 卷：46
• 期：20
• 页码：11267-11272
• 全文大小：358K
• 年卷期：v.46,no.20(October 16, 2012)
• ISSN：1520-5851

文摘

Highly effective and durable CO₂ sorbents were synthesized with different calcium and support precursors using a spray-drying technique. It was found that spray-drying could be a useful technique for producing sorbents with enhanced cyclic performance, especially when d-gluconic acids of calcium and magnesium were used. Seven sorbents were synthesized with five calcium precursors and three inert solid precursors, and the sorbent made from calcium d-gluconte monohydrate and magnesium d-gluconate hydrate with 75 wt % CaO content achieved a high CO₂ sorption capacity of 0.46 g of CO₂/g of calcined sorbent at the 44th cycle of carbonation and calcination.