SiC hollow nanosphere as an efficient catalyst for oxidative desulfurization of model fuel

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 253

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شناسه ملی سند علمی:

ISOC27_398

تاریخ نمایه سازی: 19 اسفند 1399

چکیده مقاله:

The sulfur compounds in the oil products are one of the most important pollutants that must be removed due to the generation of the toxic sulfur.1 There are several ways to remove the sulfur compounds from oil. Oxidation desulfurization (ODS) method is a favored approach due to its ability to reduce the aromatic sulfur compounds in mild operational condition.2,3 In this research, SiC hollow nanosphere has been synthesized via two natural biopolymers as carbon sources and tetraethylorthosilicate as Si source. Low-temperature magnesiothermic method used to produce the special nanostructure. The prepared SiC catalyst was characterized by FT-IR, XRD, Raman, XPS, SEM/EDS, and BET/BJH methods and its catalytic activity was investigated in oxidative desulfurization of model fuels (thiophene, benzothiophene, dibenzothiophene, and 4,6-dimethyl dibenzothiophene). The results indicate that the SiC catalyst shows the good catalytic activity (99.5%, 20 min). The catalytic performance of this metal-free catalyst is comparable with the popular metal catalysts like MoO3. Furthermore, the stability of catalyst was tested by recycling the catalyst. Result exhibits no remarkable decrease in activity of catalyst even after 5 runs.

نویسندگان

Shahrzad Abdolmohammadi

Department of Chemistry, East Tehran Branch, Islamic Azad University, P. O. Box ۱۸۷۳۵-۱۳۸, Tehran, Iran

Maryam Afsharpour

Department of Inorganic Chemistry, Chemistry& Chemical Engineering Research Center of Iran, PO Box ۱۴۳۳۵-۱۸۶, Tehran, Iran

Minoo Shariati

Department of Chemical Engineering, Tafresh University, PO Box ۷۹۶۱۱-۳۹۵۱۸, Tafresh, Iran