In this study, the main objective is to synthesize zeolite SOD, LTA and FAU and analyse the CO₂ adsorption properties of the synthesized samples. Zeolite synthesis was carried out by a simple conventional hydrothermal crystallization technique. The zeolite samples are synthesized without using any template agent during the hydrothermal process.  In this paper, zeolite sodalite SOD (50NaO2:Al2O3:5SiO2), zeolite LTA (3.165NaO2:Al2O3:1.926SiO2) and zeolite FAU (16NaO2:Al2O3:4SiO2) were synthesized successfully using the hydrothermal technique. The synthesized samples were analysed by common instrument analysis techniques such as X-ray diffraction (XRD), Fourier transform infrared microscopy (FTIR), Thermogravimetry analysis (TGA)/ Differential Thermal Analysis (DTA). Further, Field emission scanning electron microscope (FESEM) with Energy dispersive spectroscopy (EDAX) and Hi-resolution transmission electron microscope (HRTEM) reveals the “Raspberry” like spherical shaped, “Dice” cube like shaped and “Octahedral” shaped morphology for the synthesized samples. The N₂ adsorption-desorption studies for the synthesized samples were carried out using Brunauer−Emmett−Teller (BET) method at a constant liquid nitrogen atmosphere of 77K and relative pressure up to 1 bar shows the type I and type IV adsorption isotherm respectively. The pore size distributions of the synthesized zeolites were obtained using the Barrett-Joyner-Halenda (BJH) equation. Adsorption of CO₂ on zeolite SOD, LTA and FAU were examined at a pressure range from 0 to 101.325 kPa for SOD, LTA and FAU fixed temperature of 297.15 K respectively. The highest adsorption capacity of 3.7 mmol/g was obtained for zeolite FAU and the lowest adsorption capacity of 1.6 mmol/g was obtained for zeolite SOD. The synthesized zeolite was studied using a nonlinear regression curve fit to determine the adsorption isotherm model using Langmuir and Freundlich isotherm model. It has been found that the synthesized zeolites have a large electric field gradient due to which they can strongly adsorb quadrupole of CO₂ molecules.