The reaction mechanism of piperazine with CO2 is introduced.The advantages and disadvantages of single component piperazine derivatives,mixed amines solution absorbent with piperazine-containing organic amines,mixed absorbers with piperazine-containing organic amines and inorganic solvents,and piperazine-modified solid adsorbents for CO2 capture are summarized.The study on CO2 capture by piperazine derivative absorbers is also proposed.
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