Comparison of catalytic performance of synthesized EU-1 zeolite with dealuminated EU-1 zeolite for m-xylene isomerization reaction


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Abstract

EU-1 zeolite was synthesized with high purity by a hydrothermal method and under optimum conditions: synthesis time 72 h, temperature 200°C, and aging time 12 h. Then, the synthesized EU-1 zeolite was modified by dealumination with nitric acid and the changes of the properties such as surface area, pore volume, and Si/Al ratio were investigated. The catalytic performance of these two catalysts was studied and compared with a commercial mordenite catalyst for meta-xylene isomerization reaction in a fixed bed reactor. The results showed that the modification of catalyst with acid increases Si/Al ratio from 25 to 50 due to the removal of a number of aluminium atoms from the framework of zeolite. Also the catalyst surface area increased from 300.237 m2 g‒1 for EU-1 to 333.639 m2 g‒1 for modified EU-1. According to results, the modified Eu-1 had higher para/ortho ratio, meta-xylene conversion, and para-xylene yield than EU-1 and commercial mordenite in the meta-xylene isomerization reaction.

About the authors

Zahra Vosoughi Rahbari

Department of Chemistry, Faculty of Science

Author for correspondence.
Email: zahravosoughi@yahoo.com
Iran, Islamic Republic of, Kerman

Mehrji Khosravan

Department of Chemistry, Faculty of Science

Email: zahravosoughi@yahoo.com
Iran, Islamic Republic of, Kerman

Ali Nemati Kharat

Department of Chemistry, Faculty of Science

Email: zahravosoughi@yahoo.com
Iran, Islamic Republic of, Tehran

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