The catalytic decomposition of carbon dioxide on zinc-exchanged Y-zeolite at low temperatures

BACKGROUND We report our recent study on the use of a zinc-modified NaY zeolite to decompose CO2 at a temperature range between 300 and 550 degrees C. RESULTS At a reaction temperature of 450 degrees C, we observed that 70% of CO2 was converted with an insignificant quantity of CO produced. Scanning electron microscopy and Fourier transform infrared spectroscopic analysis of the neat and spent catalysts confirmed the presence of carbon nanostructures after the reaction. In addition to this, CHN analysis supports these results by providing weight percent (0.73 wt%) of carbon after reaction. Stability of the catalyst was further confirmed with slight/no change in X-ray diffraction technique. CONCLUSION This route potentially offers a facile strategy to achieve CO2 decomposition and an explanation of the formation of carbon on zinc-modified zeolite catalysts. (c) 2021 Society of Chemical Industry (SCI).

Automated summary

Our recent study focused on the use of a zinc-modified NaY zeolite for decomposing CO2 at temperatures ranging from 300 to 550 degrees Celsius. At a reaction temperature of 450 degrees Celsius, we observed 70% conversion of CO2 with a minimal amount of CO produced. Analysis using scanning electron microscopy and Fourier transform infrared spectroscopy confirmed the presence of carbon nanostructures on the catalysts after the reaction. Additionally, CHN analysis revealed a carbon weight percent of 0.73 wt% after the reaction, supporting the results. The catalyst's stability was also confirmed with little to no change in X-ray diffraction technique. This study suggests a promising strategy for achieving CO2 decomposition and sheds light on the formation of carbon on zinc-modified zeolite catalysts.