Carbon Dioxide Decomposition Over AlPO4 Based Molecular Sieves

Carbon dioxide is the most prevalent greenhouse gas that traps heat and raises the global temperature. To minimize this undesirable climate change, the solid acid catalysts are to be used for the decomposition of CO2. Aluminophosphate molecular sieves have void applications in the field of catalysis and adsorption. Metal incorporated aluminophosphate molecular sieves like Magnesium aluminophosphate and Manganese aluminophosphate are synthesizeod using low cost n-butyl amine as new template which is of high activity in the decomposition of CO2 into CO and O2. The FT-IR spectrum confirms the formation of tetrahedral framework of the materials. Powder X-ray diffraction pattern of calcinated Mg-AlPO4 and MnAlPO4 proved the well crystalline nature of the material. The morphology of the material is explained by using SEM analysis. The BET surface area of calcinated Mg-AlPO4 and Mn-AlPO4 confirmed the mesoporous nature of the materials. The decomposition of carbon dioxide has been carried out in a catalytic reactor over Mg-AlPO4 and Mn-AlPO4.The catalytic reaction conditions like temperature, flow rate, catalyst dosage and time on stream are determined for the maximum conversion of CO2. The conversion and product selectivity depends on the acidity and pore size of the catalysts.