Development of a Cu-Mg-based oxygen carrier with SiO2 as a support for chemical looping air separation
Development of a Cu-Mg-based oxygen carrier with SiO2 as a support for chemical looping air separation
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DOI：
10.1021/ef401485p
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发表时间：
2014-01
期刊：
影响因子：
5.3
通讯作者：
Hui Song;K. Shah;E. Doroodchi;B. Moghtaderi
中科院分区：
文献类型：
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作者：
Hui Song;K. Shah;E. Doroodchi;B. Moghtaderi
化学循环空气分离（CLAS）技术是富氧燃烧和整体煤气化联合循环（IGCC）等先进洁净煤技术中的一种新型制氧技术。在CLAS方法中，通过氧载体的循环氧化还原反应，即，在空气中氧化和在惰性气体如蒸汽和/或CO2下还原。因此，氧载体的性能在确定CLAS工艺的可行性及其运行成本方面起着至关重要的作用。本研究旨在开发一种浸渍Cu-Mg基氧载体与SiO2作为CLAS的支持，特别是侧重于提高CuO/SiO2载体的长期稳定性。Cu-Mg-SiO2氧载体的反应性使用热重分析（TGA）在850和950 °C之间的温度下在空气和N2环境中分别用于氧化和还原来评估。结果表明...
Chemical looping air separation (CLAS) is considered as a novel process for the economic production of oxygen in the advanced clean coal technologies, such as oxy-fuel combustion and integrated gasification combined cycles (IGCC). In the CLAS process, oxygen is separated from air via the cyclic redox reactions of oxygen carriers, i.e., the oxidation in air and the reduction under the inert gases, such as steam and/or CO2. The performance of the oxygen carrier, therefore, plays a crucial role in determining the feasibility of the CLAS process and its operating costs. The present study is aiming for the development of an impregnated Cu–Mg-based oxygen carrier with SiO2 as a support for CLAS, with a particular focus on improving the long-term stability of the CuO/SiO2 carrier. The reactivity of Cu–Mg–SiO2 oxygen carriers was evaluated using thermogravimetric analysis (TGA) at the temperatures between 850 and 950 °C in air and N2 environments for the oxidation and reduction, respectively. The results indicate...