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A series of SK-activated carbons were prepared by carbonising soya beans in the presence of KOH as activation agent. Different activation temperatures were applied to study the influence of preparation conditions on the surface properties of the carbons and their CO2 adsorption capacity. It was found that the CO2 adsorption capacity is directly related to the nature of surface basic N-containing groups and that the highest CO2 adsorption capacity value was 4.24 mmol/g under 25°C and 1 atm.
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Liu et al. (2012) studied this question.
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