The influence of seawater ions on the structural features of MFI, FAU and LTA zeolites

Author

Zhu, Bo ; Zou, Linda ; Lin, Y.S. ; Hill, Anita ; Wang, Huanting ; Huang, Yi ; Duke, Mikel

Author_Institution

Inst. for Sustainability & Innovation, Victoria Univ., Werribee, VIC, Australia

fYear

2010

fDate

22-26 Feb. 2010

Firstpage

162

Lastpage

165

Abstract

In this work, we study the structural response of MFI, FAU and LTA type zeolite powders to the presence of cations commonly found in sea salts including Na⁺, K⁺, Ca²⁺, and Mg²⁺. Zeolite powders were exposed to seawater solution (3.8 wt% (TDS)), and the structure of the zeolite powders was characterized by synchrotron X-ray powder diffraction. The results obtained from ion adsorption testing and synchrotron X-ray powder diffraction showed that the zeolites interacted with monovalent and divalent cations, and these interactions altered the crystal dimensions of the zeolites. The changes in structure could possibly affect diffusion properties of these materials when used as membranes for desalination.

Keywords

X-ray diffraction; adsorption; calcium; crystal structure; diffusion; magnesium; membranes; potassium; powders; seawater; sodium; zeolites; Ca; FAU type zeolite powders; K; MFL type zeolite powders; Mg; Na; Na₂Al₂Si₃O₁₀H₂O; crystal dimensions; crystalline structure; desalination membranes; diffusion properties; divalent cations; ion adsorption testing; monovalent cations; seawater ion solutions; structural properties; synchrotron X-ray powder diffraction; type zeolite powderszeolites; Desalination; Diffraction; Ions; Materials; Powders; Synchrotrons; X-ray diffraction; FAU; LTA; MFI; desalination; ion interactions; structure change; synchrotron X-ray powder diffraction; zeolites;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanoscience and Nanotechnology (ICONN), 2010 International Conference on

Conference_Location

Sydney, NSW

Print_ISBN

978-1-4244-5261-3

Electronic_ISBN

978-1-4244-5262-0

Type

conf

DOI

10.1109/ICONN.2010.6045228

Filename

6045228