Wega Trisunaryanti(1*), Endang Triwahyuni(2), Sri Sudiono(3)

(1) Chemistry Department, Faculty of Mathematics and Natural Sciences Gadjah Mada University, Yogyakarta
(2) Chemistry Department, Faculty of Mathematics and Natural Sciences Gadjah Mada University, Yogyakarta
(3) Chemistry Department, Faculty of Mathematics and Natural Sciences Gadjah Mada University, Yogyakarta
(*) Corresponding Author


Preparation, and modification of Ni-Pd/natural zeolite as well as their characterizations had been carried out. The aim of this research for the fututure is to prepare the best characters catalyst for the conversion of waste plastics fraction to gasoline fraction (C5-C12 hydrocarbons). The preparation of catalysts was performed by reacting a natural zeolite with the precursor of Ni(NO3)2. 9H2O and PdCl2 in an ammonia solution (25%). The modifications were performed by varying the rasio of Ni/Pd loaded to the zeolite, whereas the Pd was previously loaded and total metal content was 1 wt.% based on the zeolite. The characterization of catalysts included determination of acidity gravimetrically by adsorption of ammonia or pyridine vapour  base method, metal content by Atomic Adsorption Spectrophotometer (AAS) and X-ray Fluoresence (XRF) and crystallinity by X-ray Diffraction (XRD). The treatment of catalysts using Etilene Diamine Tetra Acetic acid  (EDTA) was performed to study the metal distribution on the outer or inner surface of the zeolite. The characterization results showed that the loading of metals to the zeolite increased its acidity and decreased its spesific surface area, however, did not defect its crystallnity.  The metals loaded on the zeolite were distributed inside the pore and at outer surface of the zeolite. For all catalyst samples, the acidities determined using ammonia were higher than those of pyridine, and the acidities determined before the EDTA treatment was lower than those after the treatment.  Metal contents of the zeolite before the EDTA treatment were higher than those after the treatment. The EDTA treatment enhanced the crystallinity of the sampel. The relationship between the metal rasio towards the acidity of the catalyst samples were in variation. Catalyst samples produced in this research have good characters, thus promisingly can be used for conversion process of waste plastics to gasoline fraction.


natural zeolite; acidity; metal content; crystallinity; EDTA

Full Text:

Full Text PDF


[1] Trisunaryanti, W., Bambang, S., and Nazarudin, 2000, Determination of an Indonesian Natural Zeolite by Acids and Hydrothermal, Prosiding Seminar Nasional FMIPA-UGM, Yogyakarta.

[2] Trisunaryanti, W., Shiba, R., Miura, M., Nomura, M., Nishiyama, N., and Matsukata, M., 1996, J. Japan Petrol. Inst., 39, 1, 20-25.

[3] Triwahyuni, E., 2000, Synthesis of Iron oxide Nanoparticles in Zeolite Structure, 2nd Pasific Basin Conference on Adsorption Science and Technology, Brisbane, Australia.

[4] Augustine, J.R., 1996, Heterogeneous Catalysis for The Synthetic Chemist, 1st ed., Marcel Decker, Inc., New York

[5] Nomura, M., Kidena, K., Murata, S., Su, Y., Artok, L., and Miyatani, Y., 1999, Am. Chem. Soc. Div. Fuel. Chem., 44(4), 755-761.

[6] Sawa, M., Niwa, M. and Murakami, W., 1990, Zeolites, 10, 532-538

[7] Triwahyuni, E., 2003, Types and Distribution of the Iron Species Formed in The zeolite Structure, 7th Eurasia Chemical Conference, Karachi, Pakistan.

[8] Triwahyuni, E., 2003, J. Ion Exchange, 14-18.


Article Metrics

Abstract views : 1944 | views : 4305

Copyright (c) 2010 Indonesian Journal of Chemistry

Creative Commons License
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.

Analytics View The Statistics of Indones. J. Chem.