Interaction of Pristine Hydrocalumite-Like Layered Double Hydroxides with Carbon Dioxide.

ABSTRACT: The layered double hydroxides (LDHs) of Ca²⁺ and trivalent cations, Al³⁺ and Fe³⁺, are single-source precursors to generate supported CaO, which picks up CO₂ from the gas phase in the temperature range 350-550 °C. The supports are ternary oxides, mayenite, and Ca₂Fe₂O₅. The uptake capacity of the Fe³⁺-containing LDH at 1.9 mmol g^-1 is two times the capacity of the Al³⁺-containing LDH. The product of CO₂ uptake is calcite CaCO₃. It is observed that the intercalated chloride ions reduce the thermal penalty by inducing the early decomposition of CaCO₃. In the case of the chloride-intercalated LDHs of Ca²⁺ and Fe³⁺, the CaCO_3<

SUBMITTER: Narayanappa AN 

PROVIDER: S-EPMC6648629 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature