https://doi.org/10.1016/j.egypro.2019.01.552
“Fig. 1.1 summarizes the CO2 adsorption capacities of different sorbents at 1 bar and 350°C. Here, the proportions of the cations in the nitrates of Li-Na, Li-K and Na-K were fixed at 1:1. It shows that Opt has the largest CO2 adsorption uptake reaching 13.52mmolg-1”
“The synthesis of alkali nitrates molten salts promoted MgO-based CO2 sorbents were carried out by a reported method[10] and was divided into three steps: firstly, a certain amount of nitrates salts and MgO powder were dissolved in 150 ml methanol and magnetic stirred for an hour to ensure a homogeneous mixture, the solution was placed in an oven held at 120°C for 4h, then cooled to ambient temperature until the samples solidified to a white mass. After that, the solidified samples were ground into powder using mechanical rolling, sealed and kept in desiccators. Before CO2 adsorption, all samples need calcined in the oven at 450 °C for 4 h to eliminate the effect of CO2 and H2O in the process of synthesis.”