A series of porous crosslinked acrylic acid copolymer beads was prepared directly by suspension polymerization of acrylic acid in the presence of 1,2 dichloroethane, toluene or heptane as the inert diluents and diviny...A series of porous crosslinked acrylic acid copolymer beads was prepared directly by suspension polymerization of acrylic acid in the presence of 1,2 dichloroethane, toluene or heptane as the inert diluents and divinylbenzene and triallyl isocyanurate as crosslinking agents. A 45% aqueous CaCl 2 solution containing 0 2% hydroxyethyl cellulose was used as the water phase. The copoly merization gave a yield more than 90% and copolymers with ion exchange capacity of 12 mmol/g were obtained. The effects of synthesis conditions,including the ratio of monomer to diluent, reaction temperture, on the resin properties were examined.展开更多
合成了聚苯乙烯?二乙烯苯吸附树脂NDA-150,研究了NDA-150和市售吸附树脂XAD-4对苯酚和2-萘酚的静态和动态吸附性能.结果表明,在研究的浓度范围内,吸附符合Langmuir等温吸附方程且吸附为放热过程.NDA-150对苯酚和2-萘酚的吸附与树脂的比...合成了聚苯乙烯?二乙烯苯吸附树脂NDA-150,研究了NDA-150和市售吸附树脂XAD-4对苯酚和2-萘酚的静态和动态吸附性能.结果表明,在研究的浓度范围内,吸附符合Langmuir等温吸附方程且吸附为放热过程.NDA-150对苯酚和2-萘酚的吸附与树脂的比表面积、微孔面积及酚类物质的疏水性有关.随流速增大,树脂穿透时间及饱和时间提前,平衡吸附量降低;初始溶液浓度增大,树脂穿透时间及饱和时间提前,平衡吸附量增大.NDA-150树脂对2-萘酚和苯酚的动态吸附较好地符合Thomas模型和LDF模型.含0.1 mol/L Na OH的60%乙醇溶液从NDA-150树脂中脱附2-萘酚和苯酚,脱附率可达90%以上.展开更多
文摘A series of porous crosslinked acrylic acid copolymer beads was prepared directly by suspension polymerization of acrylic acid in the presence of 1,2 dichloroethane, toluene or heptane as the inert diluents and divinylbenzene and triallyl isocyanurate as crosslinking agents. A 45% aqueous CaCl 2 solution containing 0 2% hydroxyethyl cellulose was used as the water phase. The copoly merization gave a yield more than 90% and copolymers with ion exchange capacity of 12 mmol/g were obtained. The effects of synthesis conditions,including the ratio of monomer to diluent, reaction temperture, on the resin properties were examined.
文摘合成了聚苯乙烯?二乙烯苯吸附树脂NDA-150,研究了NDA-150和市售吸附树脂XAD-4对苯酚和2-萘酚的静态和动态吸附性能.结果表明,在研究的浓度范围内,吸附符合Langmuir等温吸附方程且吸附为放热过程.NDA-150对苯酚和2-萘酚的吸附与树脂的比表面积、微孔面积及酚类物质的疏水性有关.随流速增大,树脂穿透时间及饱和时间提前,平衡吸附量降低;初始溶液浓度增大,树脂穿透时间及饱和时间提前,平衡吸附量增大.NDA-150树脂对2-萘酚和苯酚的动态吸附较好地符合Thomas模型和LDF模型.含0.1 mol/L Na OH的60%乙醇溶液从NDA-150树脂中脱附2-萘酚和苯酚,脱附率可达90%以上.