* Corresponding Author
SYNTHESIS OF FAUJASITE WITH HIGH THERMAL STABILITY FROM FLY ASH
https://doi.org/10.22146/ijc.21870 Sutarno Sutarno(1*), Yateman Arryanto(2)
(1) Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta
(2) Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta
(*) Corresponding Author
Abstract
Faujasite was hydrothermally synthesized from fly ash at 100oC in alkaline solution by reflux with various concentration of HCl and fusion with NaOH (weight ratio of NaOH/fly ash = 1.2) pretreatments. Thermal stability of faujasite from fly ash was tested at 400-900oC and was compared with commercial zeolite Y. The solid products were characterized by X-ray diffraction method, chemical analysis and nitrogen adsorption (BET). Results showed that synthesis of faujasite from fly ash via fusion pretreatment with NaOH has resulted faujasite selectively, however, the faujasite obtained still showed relatively low thermal stability due to its relatively low of Si/Al mol ratio. Reflux pretreatment with HCl was an effective method not only to increase the Si/Al mol ratio but also to decrease the metal impurities in the fly ash sample. Synthesis of faujasite from fly ash via combination of reflux with HCl and fusion with NaOH pretreatment has resulted faujasite selectively with higher Si/Al mol ratio. Faujasite obtained from fly ash via combination of reflux with HCl and fusion with NaOH pretreatment showed thermal stability as high as commercial zeolite NaY.
Keywords
Full Text:
Full Text PdfReferences
[1] Lin, C.-F. and Hsi, H.-C., 1995, Environ. Sci. Technol., 29(4), 1109-1117.
[2] Singer, A. and Berkgaut, V., 1995, Environ. Sci. Technol., 29(7), 1748-1753.
[3] Amrhein, C., Haghnia, G. H., Kim, T. S., Mosher, P. A., Gagajena, R. C., Amanios, T., and Torre, T. D. L., 1996, Environ. Sci. Technol., 30(3), 735-742.
[4] Querol, X., Alastuey, A., Soler, A. L., Plana, F., Andres, J. M., Juan, R., Ferrer, P., and Ruiz C. R., 1997, Environ. Sci. Technol., 31(9), 2527-2533.
[5] Shigemoto, N. , Hayashi, H. , and Miyaura, K., 1993, J. Mater. Sci., 28, 4781-4786.
[6] Chang, H.-L. and Shih, W.-H., 2000, Ind. Eng. Chem. Res., 39(11), 4185-4191.
[7] Zhao, X. S., Lu, G. X., and Zhu, H. Y., 1997, Porous Mater., 4(4), 245-252.
[8] Sutarno, Arryanto, Y., dan Yulianto, I., 2000, Pemanfaatan Limbah Abu Layang Batubara sebagai Bahan Dasar Sintesis Faujasit dengan Metoda Peleburan-Reaksi Hidrotermal, Prosiding Seminar Nasional Kimia VIII, Jurusan Kimia Fakultas MIPA, Universitas Gadjah Mada, Yogyakarta, 265-270.
[9] Darwanta, 1997, Kajian Dekomposisi Abu Layang Batubara dan Sintesis Zeolit 4A dengan Bahan Dasar Fraksi Ringan Abu Layang Batubara Hasil Dekomposisi, Skripsi FMIPA UGM Yogyakarta.
[10] Susilowati, D., Arryanto, Y., dan Sutarno, 2000, Pemanfaatan Abu Layang Batubara sebagai Bahan Dasar Sintesis Zeolit dengan Metoda Reaksi Hidrotermal Melalui Refluks HCl sebagai Perlakuan Awal, Prosiding Seminar Nasional Kimia VIII, Jurusan Kimia Fakultas MIPA, Universitas Gadjah Mada, Yogyakarta, 271-278
[11] ASTM C204, 1994, Test Method for Fineness of Portland Cement by Air Permeability Apparatus, American Society for Testing and Materials, Annual Book of ASTM Standards, Volume 04.02, West Conshohocken, Pennsylvania.
[12] Catalfamo, P., Patane, G., Primerano, P., Pasquale, S. D., and Corigliano, F., 1994, Mater. Eng., 5(2), 159-173.
[13] Hamdan, H., 1992, Introduction to Zeolites: Synthesis, Characterization and Modification, University Teknologi Malaysia.
DOI: https://doi.org/10.22146/ijc.21870
Article Metrics
Abstract views : 1559
| 
views : 1312
Copyright (c) 2010 Indonesian Journal of Chemistry
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Indonesian Journal of Chemistry (ISSN 1411-9420 /e-ISSN 2460-1578) - Chemistry Department, Universitas Gadjah Mada, Indonesia.