Enhanced Quality of Zeolite LSX: Studying Effect of Crystallized Containers

Low silica type X (LSX) Zeolite is one of useful material in many manufacturing due to the advantage properties including high surface area, stability, microporous crystalline aluminosilicates and positive ion in an extra–framework. The LSX was used rice husk silica source which obtained by leaching with hydrochloric acid and calcination at 500C. To improve the synthesis method, the LSX was crystallizated in Teflon–lined autoclave will expedite deceasing of the amorphous particles. The mixed gel with composition of 5.5 Na2O : 1.65 K2O : Al2O3 : 2.2 SiO2 : 122 H2O was crystallized in different container (Polypropylene bottom and Teflon–lined autoclave). The obtained powder was characterized by X–ray diffraction (XRD), X–ray fluorescence spectrometry, N2 adsorption-desorption analysis BET surface area Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy to justify the quality of zeolite. The results showed the crystallized zeolite in Teflon lined autoclave has 102.8 nm of crystal size, 286 m2/g of surface area and fewer amounts of round amorphous particles when compared with the crystallized zeolite in Polypropylene.

Authors:

• Jitlada Chumee

Keywords:

• LSX Zeolite
• rice husk and crystallized container.

References:

[1] S. Chiarakorn, T. Areerob and N. Grisdanurak "Influence of functional
silanes on hydrophobicity of MCM-41 synthesized from rice husk" Sci.
Technol. Adv. Mater., vol. 8, Jan. 2007 pp. 110-115
[2] M. M. Mohamed, I. F. Zidan and M. Thabet. "Synthesis of ZSM-5
zeolite from rice husk ash: Characterization and implications for
photocatalytic degradation catalysts" Micropor. Mesopor. Mat., vol.
108, Feb 2008, pp.193-203.
[3] K. Kordatos, S. Gavela, A. Ntziouni, N. K. Pistiolas, A. Kyritsi and V.
Kasselouri-Rigopoulou "Synthesis of highly siliceous ZSM-5 zeolite
using silica from rice husk ash" Micropor. Mesopor. Mat., vol. 115, Oct
2008, pp.189-196.
[4] M. M. Rahman, N. Hasnida and N. Wan "Preparation of Zeolite Y Using
Local Raw Material Rice Husk as a Silica Source" J. Sci. Res., vol. 2,
Dec. 2009, pp. 285-291.
[5] J. Wittayakun, P. Khemthong and S. Prayoonpokrach, "Synthesis and
characterization of zeolite Y from rice husk silica" Korean J. Chem.
Eng., vol. 25, Nov. 2008, pp. 861-864.
[6] S. Li, A. V. Tuan, J. L. Falconer and R. D. Noble. "X-type zeolite
membranes: preparation, characterization, and pervaporation
performance" Micropor. Mesopor. Mat., vol. 53, Jun. 2002, pp. 59-70.
[7] P. Khemthong, S. Prayoonpokarach and J. Wittayakun, "Synthesis and
characterization of zeolite LSX from rice husk" Suranaree J. Sci.
Technol., vol 14, Aug. 2007, pp. 367-379.
[8] D. Chen, X. Hu, L. Shi, Q. Cui, H. Wang and H. Yao "Synthesis and
characterization of zeolite X from lithium slag" Appl. Clay. Sci., vol.
59-60, May. 2012, pp. 148-151.
[9] C. S. Cundy and P. A. Cox. "The hydrothermal synthesis of zeolites:
Precursors, intermediates and reaction mechanism" Micropor. Mesopor.
Mat. vol. 82, Aug 2005, pp. 1-78.
[10] S. Sang, Z. Liu, P. Tian, Z. Liu, L. Qu and Y. Zhang, "Synthesis of
small crystals zeolite NaY" Mater. Lett. vol. 60, Nov. 2006, pp.1131-
1133.