Pervaporation of Water-Alcohol Mixtures on Cation-Exchanged LTA Zeolite Membranes

被引：5
作者：
Artsiusheuski, N. A. [1 ]
Grachev, A. L. [1 ]
Kolozhvari, B. A. [1 ,2 ]
Fedosov, D. A. [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119991, Russia
[2] Russian Acad Sci, Topchiev Inst Petrochem Synth, Moscow 119991, Russia
来源：
PETROLEUM CHEMISTRY | 2019年 / 59卷 / 08期
基金：
俄罗斯基础研究基金会;
关键词：
zeolite membrane; LTA; ion exchange; pervaporation; dewatering of alcohols; nonzeolite porosity; CRYSTAL EXPANSION/CONTRACTION; ADSORPTION CHARACTERISTICS; HYDROTHERMAL SYNTHESIS; DEHYDRATION;
D O I：
10.1134/S0965544119080024
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Na-LTA membranes have been synthesized on porous nickel supports by in situ crystallization from a true solution. K-LTA and Ca-LTA membranes have been prepared from Na-LTA membranes by ion exchange in 1 M KCl and CaCl2 solutions, respectively. The formation of the LTA structure, its preservation during ion exchange, and achievement of nearly 100% replacement in the near-surface layer of the zeolite membranes have been proven by means of XPD and SEM-EDX. All the zeolite membranes synthesized have been tested in pervaporation of isopropanol-water, ethanol-water, and methanol-water mixtures containing 10 wt % water. It has been found that the mass flux of alcohol does not depend on the nature of alcohol or zeolite cation if the kinetic diameter of alcohol molecule is greater the effective diameter of zeolite pores. A new method for evaluating of the mass flux through nonzeolite pores based on pervaporation data has been proposed. The estimated mass flux through nonzeolite pores for all the zeolite membranes tested is 15 +/- 3 g m(-2) h(-1) which is 1.6 to 7.6% of the total transmembrane mass flux depending on the alcohol chosen.
引用
收藏
页码：880 / 886
页数：7
相关论文
共 23 条
[1]   Continuous synthesis of NaA zeolite membranes [J].
Aguado, Sonia ;
Gascon, Jorge ;
Jansen, Jacobus C. ;
Kapteijn, Freek .
MICROPOROUS AND MESOPOROUS MATERIALS, 2009, 120 (1-2) :170-176
[2]  
Breck DW, 1974, ZEOLITE MOL SIEVES
[3]  
Caro J, 2009, ADV NANOPOR MAT, V1, P1, DOI 10.1016/S1878-7959(09)00101-7
[4]   In situ determination of the adsorption characteristics of a zeolite membrane [J].
Clark, TE ;
Deckman, HW ;
Cox, DA ;
Chance, RR .
JOURNAL OF MEMBRANE SCIENCE, 2004, 230 (1-2) :91-98
[5]   Methanol dehydration in NaA zeolite membrane reactor [J].
Fedosov, D. A. ;
Smirnov, A. V. ;
Shkirskiy, V. V. ;
Voskoboynikov, T. ;
Ivanova, I. I. .
JOURNAL OF MEMBRANE SCIENCE, 2015, 486 :189-194
[6]   Effects of the synthesis hydrogel on the formation of zeolite LTA membranes [J].
Ge, Qinqin ;
Shao, Jia ;
Wang, Zhengbao ;
Yan, Yushan .
MICROPOROUS AND MESOPOROUS MATERIALS, 2012, 151 :303-310
[7]   Gas permeation properties of ion-exchanged LTA-type zeolite membranes [J].
Guan, G ;
Kusakabe, K ;
Morooka, S .
SEPARATION SCIENCE AND TECHNOLOGY, 2001, 36 (10) :2233-2245
[8]   Hydrothermal synthesis of NaA zeolite membrane together with microwave heating and conventional heating [J].
Huang, Aisheng ;
Yang, Weishen .
MATERIALS LETTERS, 2007, 61 (29) :5129-5132
[9]   Electrophoretic technique for hydrothermal synthesis of NaA zeolite membranes on porous α-Al2O3 supports [J].
Huang, Aisheng ;
Yang, Weishen .
MATERIALS RESEARCH BULLETIN, 2007, 42 (04) :657-665
[10]   Microwave synthesis of LTA zeolite membranes without seeding [J].
Li, Yanshuo ;
Chen, Hongliang ;
Liu, Jie ;
Yang, Weishen .
JOURNAL OF MEMBRANE SCIENCE, 2006, 277 (1-2) :230-239
123