Continuous CO₂ capture and methanation over Ni-Ca/Al₂O₃ dual functional materials.

ABSTRACT: Although Ni-Ca-based dual functional materials (DFMs) have been examined for CO₂ capture and reduction with H₂ (CCR) for the synthesis of CH₄, their performance has generally been investigated using single reactors in an oxygen-free environment. In addition, continuous CCR operations have scarcely been investigated. In this study, continuous CCR for the production of CH₄ was investigated using a double reactor system over Al₂O₃-supported Ni-Ca DFMs in the presence of O₂. We found that a high Ca loading (Ni(10)-Ca(30)/Al₂O₃, 10 wt% Ni, and 30 wt% CaO) was necessary for reaction efficiency under isothermal conditions at 450 °C. The optimized DFM exhibited an excellent performance (46% CO_2<

SUBMITTER: Li L 

PROVIDER: S-EPMC9835769 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature