https://scholars.lib.ntu.edu.tw/handle/123456789/606243
標題: | Multicycle performance of catio3 decorated cao-based co2 adsorbent prepared by a versatile aerosol assisted self-assembly method | 作者: | Chang R.-W Lin C.-J YA-HSUAN LIOU |
關鍵字: | Calcium oxide;CO2 adsorbent;Multicycle performance | 公開日期: | 2021 | 卷: | 11 | 期: | 12 | 來源出版物: | Nanomaterials | 摘要: | Calcium oxide (CaO) is a promising adsorbent to separate CO2 from flue gas. However, with cycling of carbonation/decarbonation at high temperature, the serious sintering problem causes its capture capacity to decrease dramatically. A CaTiO3-decorated CaO-based CO2 adsorbent was prepared by a continuous and simple aerosol-assisted self-assembly process in this work. Results indicated that CaTiO3 and CaO formed in the adsorbent, whereas CaO gradually showed a good crystalline structure with increased calcium loading. Owing to the high thermal stability of CaTiO3, it played a role in suppressing the sintering effect and maintaining repeated high-temperature carbonation and decarbonation processes. When the calcium and titanium ratio was 3, the CO2 capture capacity was as large as 7 mmol/g with fast kinetics. After 20 cycles under mild regeneration conditions (700 °C, N2), the performance of CO2 capture of CaTiO3-decorated CaO-based adsorbent nearly unchanged. Even after 10 cycles under severe regeneration conditions (920 °C, CO2), the performance of CO2 capture still remained nearly 70% compared to the first cycle. The addition of CaTiO3 induced good and firm CaO dispersion on its surface. Excellent kinetics and stability were evident. ? 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85119673741&doi=10.3390%2fnano11123188&partnerID=40&md5=6e2a74ab8d64e6f9fc4925bdf915f26a https://scholars.lib.ntu.edu.tw/handle/123456789/606243 |
ISSN: | 20794991 | DOI: | 10.3390/nano11123188 |
顯示於: | 地質科學系 |
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