CAJ | 학술논문

采用正交实验,考察了ZSM-5分子筛膜制备过程中合成液碱量、硅铝比、模板剂用量对成膜的影响,并采用单组分模拟汽油进行脱硫实验.从脱硫效果看,得出了用于脱除噻吩和苯并噻吩各自的最佳合成液配比.按最佳配比制备出两膜,用 XRD、SEM 对膜进行表征,确定了所合成的膜为 ZSM-5分子筛膜,并估算出两膜的孔径分别为0.58 nm、0.64 nm.结果表明,合成液配比主要影响膜的孔径大小,从而影响着ZSM-5分子筛膜的分子筛分性能,最后指出当ZSM-5分子筛膜的孔径略小于硫化物分子动力学直径时,脱硫效果最佳.
채용정교실험,고찰료ZSM-5분자사막제비과정중합성액감량、규려비、모판제용량대성막적영향,병채용단조분모의기유진행탈류실험.종탈류효과간,득출료용우탈제새분화분병새분각자적최가합성액배비.안최가배비제비출량막,용 XRD、SEM 대막진행표정,학정료소합성적막위 ZSM-5분자사막,병고산출량막적공경분별위0.58 nm、0.64 nm.결과표명,합성액배비주요영향막적공경대소,종이영향착ZSM-5분자사막적분자사분성능,최후지출당ZSM-5분자사막적공경략소우류화물분자동역학직경시,탈류효과최가.
Liquid alkalinity of making membrane,silicon/aluminum ratio and quantity of template for the influence of becoming membrane were investigated in detail using orthogonal testing method. Desulfurization experiment was conducted in single component simulation gasoline. The optimal ratio of the crystallization for removing thiophene and benzothiophene was obtained in the desulfurization performance. Two membranes were prepared under the optimal conditions. The characteristics of the membranes were determined by XRD and SEM. The synthesized membranes were proved to be ZSM-5 zeolite membranes,and the apertures of two membranes were tested at 0.58 nm and 0.64 nm. Results showed that the ratio of the crystallization liquid mainly affected the aperture of the membrane which affected the selectivity of ZSM-5 zeolite membranes furthermore. The experiment result showed that when the aperture of ZSM-5 zeolite membrane was set to be slightly smaller than the dynamic diameter of sulfide molecular,an optimal desulfurization ratio was obtained.