Abstract
In this paper, treatment of liquefied petroleum gas (LPG) over Zn-containing zeolite catalysts modified by Mn, Cu and Fe was studied. The authors investigated catalytic activity in the aromatisation and desulphurisation reactions of propane-propylene and propane-butane fractions (PPF and PBF respectively). It was found that the feedstock composition did not actually affect conversion at elevated temperatures (550–600°C); however, yield of the resulting aromatic hydrocarbons was higher when using PPF. The activity of catalysts mainly depended on the structure and state of active sites and reaction conditions. During PPF desulphurisation, the Zn-Mn-ZSM-Al2O3 catalyst was the most active, while the Zn-Fe-ZSM-Al2O3 catalyst showed the highest activity with the PBF. Physical and chemical characteristics of the obtained catalysts were studied using various methods. [Received: September 20, 2017; Accepted: March 16, 2018]
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