Modification of activated carbon porosity by pyrolysis under pressure of organic compounds

摘要

Co-pyrolysis at relatively low temperature (673 K) and high pressure (10 MPa),using three organic compounds,was used to modify the porosity of the two ACs.The co-pyrolysis is effective for the modification of the porosity of an AC,and the efficiency depends on the organic compound used.The differences found are consequence of the chemical composition of the organic precursor.High pressure pyrolysis produces beneficial results when an organic compound that volatilizes during the preparation is used.Conducting pyrolysis at low temperature permits improved control of the porosity because the rate of gasification can be more tightly controlled.