The PVC series of macroporous sulfonic cation-exchange resins were prepared by thesulfonation of a macroporous PVC bead with concentrated sulfonic acid or chlorosulfonicacid, the resulting sulfonic resin was employed ...The PVC series of macroporous sulfonic cation-exchange resins were prepared by thesulfonation of a macroporous PVC bead with concentrated sulfonic acid or chlorosulfonicacid, the resulting sulfonic resin was employed in the investigation of catalyticesterification and softening of water The results show that the yields of esters reach60.0-84.4% according as different fatty acids and alcohols, the refractive indexes of estersobtained resemble those reported in the references basically, meanwhile, 345L softenedwaler which holds 0.06mmol/L hardness would be prepared by 1 L wet sulfonic resinreusing for 4 times. The resulting sulfonic resins would have 1.6-2.0 or 2.5-3.0mmol/gexchange capacity by using concentrated sulfonic acid or chlorosulfonic acid assulfonating agent, respectively The sulfonic resin has a macroporous structure taking themorphology with agglomerates of minutely spherical gel particles as characteristic.展开更多
文摘The PVC series of macroporous sulfonic cation-exchange resins were prepared by thesulfonation of a macroporous PVC bead with concentrated sulfonic acid or chlorosulfonicacid, the resulting sulfonic resin was employed in the investigation of catalyticesterification and softening of water The results show that the yields of esters reach60.0-84.4% according as different fatty acids and alcohols, the refractive indexes of estersobtained resemble those reported in the references basically, meanwhile, 345L softenedwaler which holds 0.06mmol/L hardness would be prepared by 1 L wet sulfonic resinreusing for 4 times. The resulting sulfonic resins would have 1.6-2.0 or 2.5-3.0mmol/gexchange capacity by using concentrated sulfonic acid or chlorosulfonic acid assulfonating agent, respectively The sulfonic resin has a macroporous structure taking themorphology with agglomerates of minutely spherical gel particles as characteristic.
