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Vol. 28 No. 1 (2016): Vol 28 Issue 1

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Synthesis of ZSM-5 Directly from Kaolin without Organic Template: Part-1: Effect of Crystallization Time

https://doi.org/10.14233/ajchem.2016.19348
D. Hartanto
Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
O. Saputro
Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
W.P. Utomo
Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
A. Rosyidah
Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
D. Sugiarso
Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
T. Ersam
Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
H. Nur
Ibnu Sina Institute for Scientific and Industrial Research, Universiti Teknologi Malaysia, Johor, Malaysia
D. Prasetyoko
Department of Chemistry, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia

Corresponding Author(s) : D. Prasetyoko

didikp@chem.its.ac.id

Asian Journal of Chemistry, Vol. 28 No. 1 (2016): Vol 28 Issue 1

Abstract

Zeolite socony mobile-5 (ZSM-5) have been successfully synthesized directly from kaolin without using organic templates. ZSM-5 were synthesized by hydrothermal method at 175 °C with variation on crystallization time of 12, 24, 48 and 72 h. The molar composition of the zeolites was 10Na2O:100SiO2:Al2O3:1800H2O. The analysis of both from X-ray diffraction and FT-IR spectra showed that the ZSM-5 started to be formed during the crystallization time of 12 h. ZSM-5 with crystallization time of 24 h exhibit the highest crystallinity, about 101.17 % based on the reference. The crystallinity decrease on the crystallization time of 48 and 72 h. In addition, the surface morphology of ZSM-5 investigated by SEM showed that the sample with Si/Al ratio of 5.74-9.49 with variation time of 24, 48 and 72 h formed aggregate with a hexagonal crystal shape without sharp angle. However, the samples with crystallization time of 12 h showed irregular shape.

Keywords

Kaolin Kaolinite ZSM-5 Zeolite Hydrothermal Synthesis
Hartanto, D., Saputro, O., Utomo, W., Rosyidah, A., Sugiarso, D., Ersam, T., … Prasetyoko, D. (2015). Synthesis of ZSM-5 Directly from Kaolin without Organic Template: Part-1: Effect of Crystallization Time. Asian Journal of Chemistry, 28(1), 211–215. https://doi.org/10.14233/ajchem.2016.19348
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