含氮聚氯乙烯-吡啶树脂对β-萘酚及有机酸性物质的吸附和脱附性能

Adsorption and Desorption of Pvc-pyridine Resin Containing Nitrogen for β-naphthol and Organic Acid Substances

以含氮聚氯乙烯-吡啶树脂作吸附剂,研究它对β-萘酚的静态吸附和脱附情况,以及温度对树脂吸附性能的影响。结果表明,含氮聚氯乙烯-吡啶树脂对β-萘酚有良好的吸附性和脱附性,在相同温度下,其吸附量和脱附率分别为1.32mmol/g和91%;树脂对β-萘酚的吸附量随着温度的升高而降低,吸附过程是一个放热过程。含氮聚氯乙烯-吡啶树脂对有机酸性物质有明显的吸附性能,虽然规律不很强,但是与酸性强弱有关,酸性明显强者(如甲酸、不饱和酸、取代酸),其吸附量较大,β-萘酚的酸性较弱,其吸附量较小。

The static adsorption and desorption oi pvc-pyrldme containing mtrogen ior β-naphthol were studied. The resin had a good adsorption and desorption. Under the same temperature, the adsorbance and desorption ratio of resin was 1.32mmol/g and 91%, respectively. At the same time, the influence of temperature on adsorption of resin were also studied. The results showed that the adsorbance of resin was reduced with the rising of temperature indicated that the process of adsorption was exothermic. In addition, the adsorptions of pvc-pyridine for different saturated carboxylic acid, non-saturated carboxylicacid, lactic acid and chloroacetic acid were studied, and the results showed the resin has obvious adsorption for organic acids.