Abstract:

Carbon dioxide is considered as the "culprit" of the greenhouse effect, and the study on the capture and transformation of carbon dioxide has been being one of the hot topics of scientific research. The problem 3 of the 54th International Chemistry Olympiad focused on this topic: starting from the absorption of CO₂ by NaOH solution, then presenting the development of the electrochemical cycle assisted by H₂ to realize the regeneration of absorbent and the recovery of CO₂ with high-purity, and finally introducing the structure of new porous materials with zeolite-like imidazolate framework and their application in catalytic conversion of CO₂. A story was told about solving the problem by the strategy from conventional mothed to frontier research, from ordinary solution systems to new solid materials. The young students are expected to pay attention to the climate change, to have a comprehensive understanding of the fundamental chemical principles in solving environmental problems, and to devote themselves to developing new methods and materials in the field.

Key words: Carbon dioxide, Capture and transformation, Zeolitic imidazolate framework, Catalysis, Electrochemistry