首页期刊信息编委及顾问期刊发行联系方式使用帮助常见问题ENGLISH
位置:首页 >> 正文
T型分子筛膜的制备及异丙醇脱水应用
作者:徐子雄1 2 周志辉1 2 吴红丹1 李梦松1 杜奕锦1 
单位:(1. 武汉科技大学资源与环境工程学院 武汉 430081 2. 冶金矿产资源高效利用与造块湖北省重点实验室 武汉 430081) 
关键词:热浸渍–超声法 氧化铝陶瓷管 T型分子筛膜 渗透汽化 耐酸性 
分类号:TQ028.8
出版年,卷(期):页码:2019,47(1):0-0
DOI:10.14062/j.issn.0454-5648.2019.01.11
摘要:

 采用热浸渍–超声法在长度为800 mm的α-Al2O3陶瓷管载体上形成连续致密晶种层,在n(SiO2):n(Al2O3):n(Na2O): n(K2O):n(H2O)=1:0.055:0.23:0.08:30的溶液体系中制备了T型分子筛膜。采用扫描电子显微镜和X射线衍射仪对膜形态结构和结晶情况进行表征。将所得T型分子筛膜用于渗透汽化异丙醇脱水,考察了工作温度﹑压力以及进料初始含水率对膜脱水性能的影响,验证了T型分子筛膜的耐温、耐酸性能,监测了膜脱水过程中性能变化。结果表明:工作温度在115 ℃内,压力低于0.30 MPa时,所合成的T型分子筛膜具有良好的分离性能,渗透通量随温度和压力升高而增大,而渗透液含水率基本稳定;在pH为4.0 (±0.2)的酸性环境中具有良好的稳定性。

 Continuous dense seed layer was formed on the α-Al2O3 ceramic tube with a length of 800 mm by hot dipping-ultrasonic method, on which T-type zeolite membranes were successfully synthesized from clear solution with the molar ration of n(SiO2):n(Al2O3):n(Na2O):n(K2O):n(H2O)=1:0.055:0.23:0.08:30. Morphology and crystallinity of T-type zeolite membranes were characterized by scanning electron microscopy and X-ray diffraction. The prepared T-type zeolite membranes were used for the dehydration of isopropanol by pervaporation in order to examine the effects of operating temperature, pressure, and initial water content on the dehydration performance of the membrane. The temperature and acid resistance of the T-type zeolite membranes were verified, and the membranes dehydration performance change was monitored. The results showed that when the operating temperature was within 115 ℃ and the pressure was lower than 0.30 MPa, the as-synthesized T-type zeolite membrane had high pervaporation performance and excellent stability in an acidic environment with a pH of 4.0 (±0.2). The permeation flux increased with increasing temperature and pressure, while the permeate water content was basically stable.

基金项目:
湖北省自然科学基金(2018CFB373)
作者简介:
参考文献:

 [1] 张庆武, 苗所贵, 张薇. 采用渗透汽化膜技术进行有机溶剂脱水的新方法[J]. 当代化工, 2009, 38(3): 299–302.

ZHANG Qingwu, MIAO Suogui, ZHANG Wei. Contemp Chem Ind(in Chinese), 2009, 38(3): 299–302.
[2] XU X, YANG W, LIU J, et al. Synthesis of a high-permeance NaA zeolite membrane by microwave heating[J]. Adv Mater, 2000, 12(3): 195–198.
[3] XU X, YANG W, LIU J, et al. Synthesis of NaA zeolite membranes from clear solution[J]. Micropor Mesopor Mater, 2001, 43(3): 299–311.
[4] HUANG A, LIN Y S, YANG W. Synthesis and properties of A-type zeolite membranes by secondary growth method with vacuum seeding[J]. J Membr Sci, 2004, 245(1/2): 41–51.
[5] YIN X, ZHU G, YANG W, et al. Stainless-steel-net-supported zeolite NaA membrane with high permeance and high permselectivity of oxygen over nitrogen[J]. Cheminform, 2010, 36(45): no–no.
[6] LI Y, LIU J, YANG W. Formation mechanism of microwave synthesized LTA zeolite membranes[J]. J Membr Sci, 2006, 281(1/2): 646–657.
[7] XOMERITAKIS G, NAIR S, TSAPATSIS M. Transport properties of alumina-supported MFI membranes made by secondary (seeded) growth[J]. Micropor Mesopor Mater, 2000, 38(1): 61–73.
[8] ALGIERI C, GOLEMME G, KALLUS S, et al. Preparation of thin supported MFI membranes by in situ nucleation and secondary growth[J]. Micropor Mesopor Mater, 2001, 47(2/3): 127–134.
[9] STERTE J, ANTHONIS M, BONS A J. High-flux MFI membranes[J]. Micropor Mesopor Mater, 2002, 52(3): 179–189.
[10] YUAN W, LIN Y S, YANG W. Molecular sieving MFI-type zeolite membranes for pervaporation separation of xylene isomers.[J]. J Am Chem Soc, 2004, 126(15): 4776–4777.
[11] HASEGAWA Y, IKEDA T, NAGASE T, et al. Preparation and characterization of silicalite-1 membranes prepared by secondary growth of seeds with different crystal sizes[J]. J Membr Sci, 2006, 280(1): 397–405.
[12] NISHIYAMA N, UEYAMA K, MATSUKATA M. A defect-free mordenite membrane synthesized by vapour-phase transport method[J]. J Chem Soc Chem Commun1995, 19(19): 1967–1968.
[13] TAVOLARO A, JULBE A, GUIZARD C, et al. Synthesis and characterization of a mordenite membrane on an α-Al2O3 tubular support[J]. J Mater Chem, 2000, 10(10): 1131–1137.
[14] LI S, TUAN V A, FALCONER J L, et al. Effects of zeolite membrane structure on the separation of 1,3-propanediol from glycerol and glucose by pervaporation[J]. Chem Mater, 2001, 13(5): 1865–1873.
[15] KITA H, FUCHIDA K, HORITA T, et al. Preparation of faujasite membranes and their permeation properties[J]. Sep Purif Technol, 2001, 25(1/3): 261–268.
[16] CUI Y, KITA H, OKAMOTO K. Preparation and gas separation properties of zeolite T membrane[J]. Chem Commun, 2003, 9(17): 2154–2155.
[17] WANG X, CHEN Y, ZHANG C, et al. Preparation and characterization of high-flux T-type zeolite membranes supported on YSZ hollow fibers[J]. J Membr Sci, 2014, 455(4): 294–304.
[18] ZHANG F, ZHENG Y, HU L, et al. Preparation of high-flux zeolite T membranes using reusable macroporous stainless steel supports in fluoride media[J]. J Membr Sci, 2014, 456(8): 107–116.
[19] 郭大鹏, 周志辉, 吴建雄, 等. 热浸渍预涂晶种温度对T型分子筛膜性能的影响[J]. 石油化工, 2014, 43(8): 903–907.
GUO Dapeng, ZHOU Zhihui, WU Jianxiong, et al. Petrochem Technol(in Chinese), 2014, 43(8): 903–907.
[20] 张青鹏, 周志辉, 吴红丹, 等. T型分子筛膜在清液体系中的制备优化[J]. 硅酸盐学报, 2017, 45(7): 968–975.
ZHANG Qingpeng, ZHOU Zhihui, WU Hongdan, et al. J Chin Ceram Soc, 2017, 45(7): 968–975.
[21] 尧鹏魁, 周志辉, 吴红丹, 等. 热浸渍涂晶加旋转晶化制备亲水性ZSM-5沸石膜及其性能表征[J]. 硅酸盐学报, 2017, 45(1): 70–77.
YAO Pengkui, ZHOU Zhihui, WU Hongdan, et al. J Chin Ceram Soc, 2017, 45(1): 70–77.
 
服务与反馈:
文章下载】【加入收藏
中国硅酸盐学会《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com