Preparation of Hemp-Derived Activated Carbon Monoliths. Adsorption of Water Vapor

摘要: Activated carbon monoliths have been obtained by the chemical activation of hemp canes with phosphoric acid. The effects carbonization temperature and impregnation ratio on porous structure surface chemistry were studied. activated was characterized N2 adsorption−desorption CO2 adsorption isotherms. carbons analyzed temperature-programmed desorption (TPD) X-ray photoelectron spectroscopy (XPS), morphology scanning electron microscopy (SEM). Water vapor kinetics capacities properties found to be strongly dependent ratio. An monolith an apparent area about 1500 m2/g a significant contribution mesopores (mesopore volume 0.6 cm3/g) at 400 °C impregna...