海藻基微孔碳材料的储甲烷性能

Methane Storage Performace of Self-activated Seaweed-based Carbon Materials

以天然海藻为原料,通过自活化制备了碳材料Sar CW-900-HF及Lam CW-900-HF,并对其进行表征和储甲烷能力测试.其比表面积分别为812和671 m^2/g,孔体积分别为0. 45和0. 44 cm^3/g,孔分布的峰值均在1. 1 nm,在室温及3. 5 MPa压强下储甲烷的能力分别为272 mg/g (质量比21. 3%)和246 mg/g (质量比19. 4%),经20 MPa压强压片后吸附甲烷体积比达到274和449 cm^3(STP)/cm^3,超过美国能源部提出的吸附剂的指标[263 cm^3(STP)/cm^3].

Two types of carbon material were prepared by self-activation using the seaweeds Hizikia fusifarme(Sar)and Laminaria japonica(Lam)as raw materials.The methane storage capacity of SarCW-900-HF and LamCW-900-HF are up to 272 mg/g(mass fraction 21.3%)and 246 mg/g(mass fraction 19.4%)at room temperature and pressure of 3.5 MPa.The specific surface area of the two materials are 812 and 671 m 2/g,and pore volume are 0.45 and 0.44 cm 3/g,respectively.The peak of pore distribution is at 1.1 nm.After tableting under pressure of 20 MPa,the methane adsorption volume ratio reached 274 and 449 cm 3(STP)/cm 3,beyond the DOE’s target of 263 cm 3(STP)/cm 3.