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SUZ-4 Zeolite Synthesis Derived from Rice Husk Ash
Paper Type  |
Contributed Paper |
Title |
SUZ-4 Zeolite Synthesis Derived from Rice Husk Ash |
Author |
Napapan Jaroonvechatam [a,c], Pakkarada Sansuksom [a], Patcharin Worathanakul [b] and Paisan Kongkac |
Email |
fengpsk@ku.ac.th |
|
Abstract: Rice husk ash (RHA) as a raw material was used to synthesize SUZ-4 zeolite via a hydrothermal process in the presence of tetraethyl ammonium hydroxide as the template. The molar ratios of silica from RHA: silica sol were varied as the following: 0:100, 50:50, 70:30, 90:10 and 100:0. The synthesized zeolite was characterized using various techniques including X-ray Powder diffraction, Scanning Electron Microscopy and BET-N2 adsorption method. The results show that the obtained SUZ-4 zeolite using pure silica sol has a needle-shape crystal having diameter in a range of 0.07 ± 0.02 mm and length in a range of 1.7 ± 0.2 mm, while the SUZ-4 crystal from using 50% RHA has a larger needle-shape than that of pure silica sol, having diameter of 0.2 ± 0.01 mm and length of 5.0 ± 1.5 mm. The crystallite size was shrunk to 0.13 ± 0.01 x 2.8 ± 0.2 mm when 90% and 100% RHA were used. With 50 % RHA, high purity of SUZ-4 was obtained having the same surface area as that of 100 % silica sol. The increase in RHA content did change the pore size distribution due to the competitive formation of Merlinoite zeolite (MER) during the crystallization process. |
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Start & End Page |
109 - 116 |
Received Date |
2011-11-28 |
Revised Date |
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Accepted Date |
2012-04-18 |
Full Text |
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Keyword |
SUZ-4 zeolite, merlinoite (MER), rice husk ash (RHA), silica sol |
Volume |
Vol.40 No.1 (JANUARY 2013) |
DOI |
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Citation |
[a N.J., C] , [a] P.S., [b] P.W. and Kongkac P., SUZ-4 Zeolite Synthesis Derived from Rice Husk Ash , Chiang Mai Journal of Science, 2013; 40(1): 109-116. |
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