For the development of adsorbent for adsorption of natural gas (ANG), Setaram PCT Pro E&E was employed to measure the isotherms of methane adsorption on the activated carbon SAC-02 with specific surface area of 2074 m2 ·g-1 over a temperature range of 263.15K-313.15K and a pressures range of 0-8MPa. Dubinin and Astakhov's equation (D-A equation), Clausius-Clapeyron equation and Virial plot were used to fit and analyze the adsorption data. The results showed that when the pressure was higher than 0.08MPa, the modified D-A model could much accurately predict the adsorption data with a mean relative error of less than 5%; the isosteric heat of methane adsorption on the activated carbon was 13.99kJ·mol-1-17.57 kJ·mol-1, which revealed the adsorption of methane on energy heterogeneous surface; the limit isosteric heat of methane adsorption linearly changes with temperature, and the average value was 19.43kJ·mor-1.%为研发ANG吸附剂,本文选择比表面积为2074m2·g-1的活性炭SAC-02,在温度区间263.15K～313.15K、压力范围0 MPa～8MPa,应用Setaram PCT Pro E&E测量甲烷在SAC-02活性炭上的吸附等温线,并由D-A方程、Clausius-Clapeyron方程和Virial方程标绘分析了实验数据.结果表明,当压力高于0.08MPa时,确定参数后的D-A方程预测实验数据的相对误差小于5％；甲烷在SAC-02活性炭上的等量吸附热反映了甲烷在能量非均匀表面吸附的特点,数值为13.99kJ· mol-1～17.57 kJ·mol-1,极限吸附热随温度呈线性变化,其平均值为19.43kJ· mol-1.
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