Owing to its high abundance, low price and relatively low toxicity, the use of carbon dioxide as a C1 source in chemical reactions and processes is an attractive alternative to common C1 starting compounds, such as carbon monoxide and phosgene. For example, the direct, low-pressure hydrogena-tion of carbon dioxide to formic acid and its derivates is a desirable transformation, considering that formic acid is widely used in the chemical industry as acid, reductant, and importantly as carbon source.
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