Results showed that PUPr had better adsorptive power for hard alkali ligand and its adsorptive rate was rapid. A gram PUPr could adsorb 4.05 milli-mole SO2 in one hour.

• 结果表明；PUPr对于电负性较大的硬碱配位体SO2的吸附性能较佳；且吸附速率较快；1h吸附量就达到4.；05mmol/g。