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[1]陈玉丽,赵露君,居沈贵.硅铝比对ZSM-5分子筛膜晶体形貌及其脱硫性能的影响[J].南京工业大学学报(自然科学版),2016,38(06):14-19.[doi:10.3969/j.issn.1671-7627.2016.06.003]
 CHEN Yuli,ZHAO Lujun,JU Shengui.Effects of silica-alumina mole ratio of ZSM-5 zeolite membranes on crystal morphology and desulfurization[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(06):14-19.[doi:10.3969/j.issn.1671-7627.2016.06.003]
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硅铝比对ZSM-5分子筛膜晶体形貌及其脱硫性能的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
38
期数:
2016年06期
页码:
14-19
栏目:
出版日期:
2016-11-15

文章信息/Info

Title:
Effects of silica-alumina mole ratio of ZSM-5 zeolite membranes on crystal morphology and desulfurization
文章编号:
1671-7627(2016)06-0014-06
作者:
陈玉丽赵露君居沈贵
南京工业大学 化工学院,江苏 南京 210009
Author(s):
CHEN YuliZHAO LujunJU Shengui
College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
硅铝比 ZSM-5分子筛膜 脱硫 噻吩
Keywords:
silica-alumina mole ratio ZSM-5 zeolite membranes desulfurization thiophene
分类号:
TQ028.8
DOI:
10.3969/j.issn.1671-7627.2016.06.003
文献标志码:
A
摘要:
采用二次水热合成法合成ZSM-5分子筛膜,并用Co2+进行改性。考察合成液中SiO2与Al2O3摩尔比(硅铝比,25~250)对ZSM-5分子筛膜晶体形貌的影响。分别采用X线衍射仪(XRD)和扫描电子显微镜(SEM)对不同硅铝比的ZSM-5分子筛膜进行表征,以噻吩(TP)、苯并噻吩(BT)的模拟汽油测试分子筛膜的脱硫效果。结果表明:随着硅铝比的增大,ZSM-5分子筛膜的颗粒形貌逐渐规整,致密度及完整性越好; 但硅铝比较大时,膜颗粒形貌不固定,较致密的分子筛膜无法进行脱硫实验。在硅铝比为100时,ZSM-5分子筛膜颗粒形状趋于规整,晶粒比较均匀,晶粒间互锁生长良好且对噻吩的脱硫率达到45%; TP-BT双组分硫化物脱硫率高于单组分; Co2+改性后的ZSM-5分子筛膜脱除噻吩的效果优于未改性的分子筛膜,脱硫率达到62%。
Abstract:
Supported ZSM-5 zeolite membranes were obtained by twice hydrothermal synthesis.ZSM-5 zeolite membranes were characterized by X-ray diffraction(XRD)and scanning electron microscope(SEM)to uncover the crystal morphology with silica-alumina mole ratios from 25 to 250.Desulfurization experiments were carried out with model gasoline of thiophene(TP)and bicomponent(BT)components.With the increase of silica-alumina male ratio of the membrane,membrane particle shape gradually became regular,but an overly high silica-alumina male ratio could make membrane particle shape irregular.When the silica-alumina male ratio was about 100,it appeared to be unique. SEM results proved the membrane was continuous and complete without observable defects. TP removal was 45%.The removal of TP-BT bicomponent sulfides was better than the the removal of TP in single component model gasoline.Co2+ modified membrane increased the removal of TP for the desulfurization rate of 62%.

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备注/Memo

备注/Memo:
收稿日期:2015-05-06
基金项目:国家自然科学基金(21176118)
作者简介:陈玉丽(1989—),女,山东临沂人,硕士,主要研究方向为ZSM-5分子筛膜脱硫; 居沈贵(联系人),教授, E-mail: jushengui@163.com.
引用本文:陈玉丽,赵露君,居沈贵.硅铝比对ZSM-5分子筛膜晶体形貌及其脱硫性能的影响[J].南京工业大学学报(自然科学版),2016,38(6):14-19..
更新日期/Last Update: 2016-12-20