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Direct Synthesis of Highly Crystalline ZSM-5 from Indonesian Kaolin

1Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, , Indonesia

2Kampus C Unair, Jl. Mulyorejo, Surabaya, 60115, Indonesia

3Department of Chemistry, Institut Teknologi Sepuluh Nopember, Keputih, Surabaya, 60115, Indonesia

Received: 21 Nov 2016; Revised: 30 Dec 2016; Accepted: 18 Feb 2017; Published: 1 Aug 2017; Available online: 8 May 2017.
Open Access Copyright (c) 2017 by Authors, Published by BCREC Group under http://creativecommons.org/licenses/by-sa/4.0.

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Abstract

Direct synthesis of ZSM-5 from Indonesian kaolin without calcination for the formation of metakaolin was done through the addition of an alkaline solution (sodium fluoride and sodium hydroxide) and the fusion using sodium hydroxide. Crystallization was conducted through hydrothermal method at 80 °C for four days. XRD diffractogram and FTIR spectra showed that the addition of sodium fluoride solution in the ratio Si/Al = 100 could produce highly crystalline ZSM-5, whereas the use of a sodium hydroxide solution and fusion process did not produce the crystalline ZSM-5. 

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Keywords: synthesis of ZSM-5; kaolin; without calcination; sodium fluoride

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