A comparative study of phenolic resin-based activated carbons by means of supercritical water activation and steam activation

作者：Cai Q^*; Huang ZH; Kang FY

来源：New Carbon Materials, 2005, 20(2): 122-128.

• activated carbon
• supercritical water activation
• steam activation
• pore structure

A new activation method, supercritical water activation (650 degrees C, 32 Pa), and a traditional method, steam activation (650 degrees C), were used to prepare phenolic resin based activated carbons. Based on pore structure characterization of the samples by nitrogen adsorption and weight loss behavior of the starting materials by TG/DSC analysis, the effects of the two different activation methods and the degree of carbonization of the starting materials on the evolution of the pore structure of phenolic resin-based activated carbons were obtained. Results show that: (1) supercritical water activation benefits the development of mesoporosity, while steam activation benefits the development of microporosity; (2) activated carbons with high specific surface area and mesoporosity were obtained at a low degree of burn-off from phenolic resin-based carbons carbonized to a low degree.

• 出版日期2005-6
• 单位清华大学