固体吸附剂对CO_2的高压吸附性能研究

The Adsorption Capacity of Solid Adsorbents in High Pressure

在高压吸附仪上研究了硅胶、MCM-41、13X、SBA-15四种固体吸附剂对CO_2的高压吸附性能,考察了温度、压力、结构性质和吸附热对吸附剂吸附量的影响.结果表明,高压下四种吸附剂对CO_2的吸附均属于物理吸附,且随着压力增大吸附剂的吸附性能增强。吸附量的大小变化分为两个阶段,不同阶段影响吸附量的因素不同。四种固体吸附剂的高压吸附实验表明,理想吸附剂的选择需要从吸附量、对温度的敏感性以及孔径大小和分布等综合考虑.

The adsorption performance of four solid adsorbents（13X,Silica, MCM-41, SBA-15）was studied in PCT, and the influence of structure property, temperature, pressure on the adsorption capacity were analyzed. The research shows that the adsorption between CO2 and adsorbents in high pressure belongs to physical adsorption, and the adsorption capacity increases with the pressure getting higher. The adsorption is divided into two parts, which is effected by different factors. The experiment shows that we should choose the ideal adsorbents considering all the factors of adsorption quantity, the sensitivity for temperature, the distribution and the diameter of the pore.