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硅溶胶填充再生纤维素膜渗透汽化分离己内酰胺水溶液 被引量:2

Silica sol filled regenerated cellulose membranes for pervaporation separation of caprolactam-water mixtures
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摘要 己内酰胺是重要的有机化工原料。以短棉绒为制膜原料和硅溶胶为填充剂,通过相转变方法制备了硅溶胶填充再生纤维素(RC)杂化膜,采用渗透汽化脱除己内酰胺(CPL)中的水。通过SEM、ATR-FTIR、XRD和TGA分别对膜进行了表征,考察了膜中硅溶胶的质量分数和进料温度对杂化膜分离性能的影响。试验结果表明,硅溶胶在RC膜中分散均匀,杂化膜的热稳定性高,结晶度小。当膜中硅溶胶质量分数为3%时,杂化膜渗透汽化分离性能最佳。50℃下此杂化膜用于分离质量分数为70%的CPL溶液时,其总通量和分离因子分别达到640.40 g/(m^2·h)和630.08。 己内酰胺是重要的有机化工原料。以短棉绒为制膜原料和硅溶胶为填充剂,通过相转变方法制备了硅溶胶填充再生纤维素(RC)杂化膜,采用渗透汽化脱除己内酰胺(CPL)中的水。通过SEM、ATR-FTIR、XRD和TGA分别对膜进行了表征,考察了膜中硅溶胶的质量分数和进料温度对杂化膜分离性能的影响。试验结果表明,硅溶胶在RC膜中分散均匀,杂化膜的热稳定性高,结晶度小。当膜中硅溶胶质量分数为3%时,杂化膜渗透汽化分离性能最佳。50℃下此杂化膜用于分离质量分数为70%的CPL溶液时,其总通量和分离因子分别达到640.40 g/(m^2·h)和630.08。
出处 《化工进展》 EI CAS CSCD 北大核心 2011年第S2期249-253,共5页 Chemical Industry and Engineering Progress
关键词 硅溶胶 再生纤维素膜 杂化膜 渗透汽化 己内酰胺脱水 regenerated cellulose cotton silica sol pervaporation caprolactam-water solutions
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