Preparation of activated carbons from Chinese coal and hydrolysis lignin

Abstract

Activated carbons from Chinese coal and Chinese hydrolysis lignin have been prepared by chemical activation with potassium hydroxide. The following aspects of these activated materials have been analyzed: Raw material; pre-treatment of raw material; activation agent, activation temperature and time, and the activation agent/raw material ratio. Activated carbons with BET specific surface areas of the order of 2400-2600 m2/g which exhibited substantial microporosity, a total pore volume of over 1.30 cm3/g and a Methylene Blue adsorption capacity of over 440 mg/g were obtained.