Abstract
In this work, four ZSM-5 and HZSM-5 zeolites were synthesized hydrothermally with SiO2/Al2O3 ratio of 40 and 80 and the performance of these samples was studied in desulfurization of heavy naphtha. Samples were analyzed by X-ray diffraction, the Brunauer–Emmett–Teller, field emission scanning electron microscope (FE-SEM), and temperature-programmed desorption of ammonia (NH3–TPD). All samples were tested at 450 °C, 15 bar, H2/Oil = 150 Nml/ml, and weight hourly space velocity (WHSV) = 1 h−1 in a fixed-bed reactor (a Catatest reactor system). The standard of ASTM-D5453 was used for measuring the total sulfur of the feed and products. The result shows that the HZSM-5 zeolites have higher acidity compared to ZSM-5 zeolite samples; as a result, they are more capable of eliminating sulfuric compounds. The sample with SiO2/Al2O3 of 40 shows 87% desulfurization.
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Acknowledgements
This study was done at Islamic Azad University Science and Research Branch of Tehran. The authors would also like to appreciate all the insights and expertise provided by the Research Institute of Petroleum Industry for its valuable assistance.
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The authors declare that there is no conflict of interests regarding the publication of this manuscript. In addition, the ethical issues, including plagiarism, informed consent, misconduct, data fabrication and/or falsification, double publication and/or submission, and redundancy, have been completely observed by the authors.
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Ahmadvand, M.S., Askari, S. & Sharifi, K. Synthesis and performance of ZSM-5 and HZSM-5 in desulfurization of naphtha. Int. J. Environ. Sci. Technol. 17, 3541–3548 (2020). https://doi.org/10.1007/s13762-020-02639-7
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DOI: https://doi.org/10.1007/s13762-020-02639-7