Precursor engineering of hydrotalcite-derived redox sorbents for reversible and stable thermochemical oxygen storage.
Precursor engineering of hydrotalcite-derived redox sorbents for reversible and stable thermochemical oxygen storage.
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用于可逆和稳定热化学储氧的水滑石衍生氧化还原吸附剂的前驱体工程。
DOI:
10.1038/s41467-022-32593-6
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发表时间:
2022-08-30
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Chemical looping processes based on multiple-step reduction and oxidation of metal oxides hold great promise for a variety of energy applications, such as CO2 capture and conversion, gas separation, energy storage, and redox catalytic processes. Copper-based mixed oxides are one of the most promising candidate materials with a high oxygen storage capacity. However, the structural deterioration and sintering at high temperatures is one key scientific challenge. Herein, we report a precursor engineering approach to prepare durable copper-based redox sorbents for use in thermochemical looping processes for combustion and gas purification. Calcination of the CuMgAl hydrotalcite precursors formed mixed metal oxides consisting of CuO nanoparticles dispersed in the Mg-Al oxide support which inhibited the formation of copper aluminates during redox cycling. The copper-based redox sorbents demonstrated enhanced reaction rates, stable O2 storage capacity over 500 redox cycles at 900 °C, and efficient gas purification over a broad temperature range. We expect that our materials design strategy has broad implications on synthesis and engineering of mixed metal oxides for a range of thermochemical processes and redox catalytic applications. Thermochemical redox reactions of metal oxides are promising for CO2 capture, gas purification, air separation, and energy storage. Here, the authors report mixed metal oxides derived from layered double hydroxides precursors, and demonstrate their reversible and stable thermochemical oxygen storage.
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影响因子:
5.3
作者:
Chuang, S. Y.;Dennis, J. S.;Scott, S. A.
通讯作者:
Scott, S. A.
影响因子:
5.3
作者:
Arjmand, Mehdi;Keller, Martin;Lyngfelt, Anders
通讯作者:
Lyngfelt, Anders
影响因子:
4.2
作者:
Arjmand, Mehdi;Azad, Abdul-Majeed;Lyngfelt, Anders
通讯作者:
Lyngfelt, Anders
影响因子:
13.6
作者:
Gao, Yunfei;Wang, Xijun;Li, Fanxing
通讯作者:
Li, Fanxing
影响因子:
8.6
作者:
Behrens, Malte;Kasatkin, Igor;Weinberg, Gisela
通讯作者:
Weinberg, Gisela