Adsorption of CO2 by Alkaline Activated Ca-Al2O3-SiO2 Material

Natural gas contains a slight level of carbon dioxide which leads to several industrial and domestic heating problems. In addition, it is one of main greenhouse gases that contribute for global warming, where its pollution is a wide-spread problem arising from a wide range of industries, leading to complex contaminant in atmosphere. Given the increasing pressures worldwide to minimize the emission of greenhouse gases into atmosphere, CO₂ must be remediated efficiently and cost effectively.

In this short abstract a chemically treated limestone and alumino-silicate material were utilized for removal of CO₂ from natural gas using a combined adsorption-chemical reaction processes.  This functionalized Ca-Al₂O₃-SiO₂ material was characterized according to its crystalline phase, surface area, pore size distribution and surface morphology.  Then it was tested against different concentrations of CO₂ in CO₂-N₂ gas streams.