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Effect of synthesis parameters on the crystallinity of EU-1 zeolite for the m-xylene isomerization reaction

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Abstract

The EU-1 zeolite with Si/Al = 25 was synthesized by hexamethonium bromide as a template. The effects of crystallization time, synthesis temperature, and the pH of the synthesis gel on the structure and crystallinity of EU-1 zeolite were investigated. The synthesized EU-1 zeolite was characterized by X-ray powder diffraction, BET, Fourier transforms infrared spectroscopy, scanning electron microscope, and inductively coupled plasma. The most effective conditions for synthesis of EU-1 were identified as follow: synthesis time 72 h, temperature 200°C, pH of gel ≃ 13, and aging time of 12 h. The catalytic performance of this catalyst was investigated for meta-xylene isomerization reaction in a fixed bed reactor under the following conditions: pressure of 10 bars, the temperature of 380°C, feed space velocity of 3.35 h–1 and 4 g of the EU-1 catalyst. In comparison to other reported catalysts our synthetic EU-1 showed good m-xylene conversion and high PX/OX ratio.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, Iran

    Zahra Vosoughi Rahbari & Mehrji Khosravan

  2. Department of Chemistry, Faculty of Science, University of Tehran, Tehran, Iran

    Ali Nemati Kharat

Authors
  1. Zahra Vosoughi Rahbari
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  2. Mehrji Khosravan
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  3. Ali Nemati Kharat
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Correspondence to Zahra Vosoughi Rahbari.

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Rahbari, Z.V., Khosravan, M. & Kharat, A.N. Effect of synthesis parameters on the crystallinity of EU-1 zeolite for the m-xylene isomerization reaction. Russ J Appl Chem 90, 818–825 (2017). https://doi.org/10.1134/S107042721705024X

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