A Remedy for Global Warming through the Effective Use of Waste Dye Effluents for the Synthesis of AlSiO4 Solid Acid Catalysts with Carbon Dioxide Decomposition

Global concern about its rising levels in the atmosphere has led to the search for novel strategies to decrease CO2 productions. In this regard, this article presents a new type of catalyst for spontaneous decomposition of CO2. Novel AlSiO4 mesoporous solid acid catalysts are synthesized by different type of dye molecules as templates like anionic dye (Congo red (AlSiO4-15), brilliant yellow (AlSiO4-22) and cationic dye (rhodamine-B (AlSiO4-13R)), nitroso dye (naphthol green-B (AlSiO4-13N)). Here, harmful templates were avoided by using waste dye effluents as an appropriate template for the solid acid catalyst manufacturing process rather than traditional templates. Waste dye effluents were converted into a useful product and applied for environmental remedy. The carbon dioxide breakdown reaction uses the produced solid acid catalysts and was carried out in a recently developed U-type catalytic reactor. The catalytic bed was filled with solid acid catalysts that breakdown CO2 into O2, CO and carbon. The catalysts significantly lower the activation energy of CO2 gas at room pressure and low temperature.