Characterization of novel solvothermolysed dolomite for carbon dioxide separation from synthetic gas mixture

Abstract

Huge emissions of carbon dioxide from fossil fuel fired power plants and industrial plants over the last century have resulted in an increase of the atmospheric carbon dioxide concentration, resulting in so-called green house. Thus development of CO2 adsorbent seems to be crucial nowadays. In this work solvothermolysis processes was performed on dolomite with and without addition of Al(OH)2 in molar ratio of 1:1, 1:2 and 1:3 of Al(OH)2 to dolomite using three differences solvent which are water, ethanol and polyethylene glycol. The phase identification of solvothermolysed dolomite was performed using X-ray diffraction technique (XRD) and it was found that the samples possessed the main peaks of the raw dolomite thus conformed that they existed in Hexagonal (Rh) system. t-e-dolomite and 1:2 t-e-AL:d shows improvement in amount of CO2 adsorbed compared to raw dolomite, the lowest average crystal size and decomposed at lowest temperature with highest weight loss in thermogravimetric analysis (TGA).