Precursor engineering of hydrotalcite-derived redox sorbents for reversible and stable thermochemical oxygen storage.

ABSTRACT: 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

SUBMITTER: High M 

PROVIDER: S-EPMC9427752 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature