Hydrothermal synthesis of hydroxy sodalite zeolite membrane: Separation of H2/CH4

被引：65

作者：

Nabavi, Mohammad Sadegh ^{[1
]}

Mohammadi, Toraj ^{[1
]}

Kazemimoghadam, Mansoor ^{[1
]}

机构：

[1] IUST, Fac Chem Engn, Res Ctr Membrane Separat Proc, Tehran, Iran

来源：

CERAMICS INTERNATIONAL | 2014年 / 40卷 / 04期

关键词：

HS zeolite membrane; Crystallinity; Nanostructure; Hydrothermal synthesis; H-2/CH4; separation; SYNTHESIS PARAMETERS; PARTICULATE PROPERTIES; NAA ZEOLITE; CRYSTALLIZATION; TEMPERATURE; TIME; SIZE;

D O I：

10.1016/j.ceramint.2013.11.033

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study, hydroxy sodalite (HS) zeolite was synthesized via hydrothermal method. As reported in the literature, the recommended molar composition of H2O/Al2O3 for HS zeolite synthesis is about 1000. However in our work, HS zeolite was synthesized using new molar compositions of H2O/Al2O3 for different synthesis times and their effects on morphology and crystallinity of the synthesized zeolites were investigated. Also, HS zeolite membranes were synthesized on seeded supports using synthesized powders and the effect of seed size was also investigated. The products were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Gas permeation through the membranes was also measured. First of all, it was found that synthesis time has a significant effect on crystallinity and crystal size of the synthesized zeolite. Also, water molar ratio can control crystal size of the synthesized zeolite. It was found out that with increasing the seed size, H-2 and CH4 permeations decrease, from 3224 to 279 (Barrer) and from 611 to 45 (Barrer), respectively, while the H-2/CH4 selectivity increases from 5.28 to 6.20. Finally, to obtain HS zeolite with desirable particle size, crystallinity and morphology, optimum synthesis conditions were proposed. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：5889 / 5896

页数：8

共 22 条

[11] Emulsion-derived urchin-shaped hydroxy sodalite particles [J].

Kundu, D. ;

Dey, B. ;

Naskar, M. K. ;

Chatterjee, M. .

MATERIALS LETTERS, 2010, 64 (14) :1630-1633

[12] Investigation of hydrothermal synthesis parameters on characteristics of T type zeolite crystal structure [J].

Mirfendereski, Mojtaba ;

Mohammadi, Toraj .

POWDER TECHNOLOGY, 2011, 206 (03) :345-352

[13]

Naskar M.K., MAT LETT, V65

[14]

Paul F.R., 2006, DESALINATION, V193, P6

[15] Preparation and characterization of Na-LTA zeolite from Tunisian sand and aluminum scrap [J].

Tounsi, H. ;

Mseddi, S. ;

Djemel, S. .

PROCEEDINGS OF THE JMSM 2008 CONFERENCE, 2009, 2 (03) :1065-1074

[16] Fast Crystallization of SUZ-4 Zeolite with Hydrothermal Synthesis: Part I Temperature and Time Effect [J].

Vongvoradit, P. ;

Worathanakul, P. .

ISEEC, 2012, 32 :198-204

[17]

Welk MargaretE., 2004, Prepr.Pap.-Am. Chem. Soc., V49, P889

[18] Synthesis of NaA zeolite membranes from clear solution [J].

Xu, XC ;

Yang, WS ;

Liu, J ;

Lin, LW .

MICROPOROUS AND MESOPOROUS MATERIALS, 2001, 43 (03) :299-311

[19] Synthesis of nanocrystalline sodalite with organic additives [J].

Yao, Jianfeng ;

Zhang, Lixiong ;

Wang, Huanting .

MATERIALS LETTERS, 2008, 62 (24) :4028-4030

[20] Influence of glycerol cosolvent on the synthesis of size controllable zeolite A [J].

Yao, Jianfeng ;

Yu, Liang ;

Zhang, Lixiong ;

Wang, Huanting .

MATERIALS LETTERS, 2011, 65 (14) :2304-2306

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