以亚麻屑为原料,采用磷酸和氯化锌进行了对比活化实验,探讨了浸渍比、活化温度对活性炭的吸附性能、得率和比表面积的影响。结果表明,在浸渍比为300∶1,500℃下活化60 m in,均能得到吸附性能较好的活性炭,其中碘值是氯化锌法高于磷酸法...以亚麻屑为原料,采用磷酸和氯化锌进行了对比活化实验,探讨了浸渍比、活化温度对活性炭的吸附性能、得率和比表面积的影响。结果表明,在浸渍比为300∶1,500℃下活化60 m in,均能得到吸附性能较好的活性炭,其中碘值是氯化锌法高于磷酸法,亚甲基蓝吸附则是磷酸法高于氯化锌法,说明在活化过程中磷酸和氯化锌对活性炭的影响不尽相同,孔隙结构存在差别。展开更多
In this study, activated carbon was prepared by the potassium hydroxide activation method with flax residues as raw materials. High-quality activated carbon was prepared by single factor and orthogonal experiments. Io...In this study, activated carbon was prepared by the potassium hydroxide activation method with flax residues as raw materials. High-quality activated carbon was prepared by single factor and orthogonal experiments. Iodine adsorption and methylene blue adsorption were used as performance indicators. As prepared activated carbon was characterized by XRD, XPS and SEM. The results showed that the optimized electrode material was prepared under an impregnation ratio of 1:2, activation temperature of 800°C and activation time of 100 min. The yield of activated carbon was 49.48%, the iodine value was 1667.13 mg/g and the methylene blue value was 429 mg/g. The specific surface area measured by the automatic porosity analyzer is 1221 m<sup>2</sup>/g, and the mass-specific capacitance is 215.7 F/g under current density of 0.1 A/g.展开更多
文摘以亚麻屑为原料,采用磷酸和氯化锌进行了对比活化实验,探讨了浸渍比、活化温度对活性炭的吸附性能、得率和比表面积的影响。结果表明,在浸渍比为300∶1,500℃下活化60 m in,均能得到吸附性能较好的活性炭,其中碘值是氯化锌法高于磷酸法,亚甲基蓝吸附则是磷酸法高于氯化锌法,说明在活化过程中磷酸和氯化锌对活性炭的影响不尽相同,孔隙结构存在差别。
文摘In this study, activated carbon was prepared by the potassium hydroxide activation method with flax residues as raw materials. High-quality activated carbon was prepared by single factor and orthogonal experiments. Iodine adsorption and methylene blue adsorption were used as performance indicators. As prepared activated carbon was characterized by XRD, XPS and SEM. The results showed that the optimized electrode material was prepared under an impregnation ratio of 1:2, activation temperature of 800°C and activation time of 100 min. The yield of activated carbon was 49.48%, the iodine value was 1667.13 mg/g and the methylene blue value was 429 mg/g. The specific surface area measured by the automatic porosity analyzer is 1221 m<sup>2</sup>/g, and the mass-specific capacitance is 215.7 F/g under current density of 0.1 A/g.
