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Comparative study on adsorptive desulfurization of thiophenic compounds over terephthalic acid-based and trimesic acid-based metal-organic frameworks
, Article Energy and Fuels ; Volume 37, Issue 9 , 2023 , Pages 6490-6502 ; 08870624 (ISSN) ; Khorashe, F ; Hajjar, Z ; Soltanali, S ; Sharif University of Technology
American Chemical Society
2023
Abstract
Aromatic sulfur compounds present in liquid fuels in the form of thiophenes are converted into sulfur oxides (SOx) during the combustion of fuels and cause major environmental problems such as acid rain, global warming, and air pollution. The adsorptive desulfurization of four aromatic sulfur compounds─thiophene, benzothiophene, dibenzothiophene, and 4,6-dimethyl dibenzothiophene─from n-octane was investigated in the current study over five typical metal-organic frameworks (MOFs), namely MIL-53(Cr, Al, Fe), Cu-BDC, and HKUST-1, which were successfully synthesized and characterized using XRD, FT-IR, SEM, and N2 adsorption-desorption. The results indicate that for ADS of thiophene and BT, the...
Developing new mof-based hybrid materials for efficient adsorptive desulfurization of a refractory sulfur compound
, Article Energy and Fuels ; Volume 37, Issue 18 , 2023 , Pages 13769-13784 ; 08870624 (ISSN) ; Hajjar, Z ; Khorasheh, F ; Soltanali, S ; Tayyebi, S ; Sharif University of Technology
American Chemical Society
2023
Abstract
To reduce threats to human health and the environment, enhance process safety and efficiency, and meet product standards, it is essential to remove organic sulfur compounds from liquid fuels. Activated carbon (AC) was successfully functionalized and incorporated into a chromium-based metal organic framework, namely, MIL-53(Cr), to further enhance its pore structure and surface properties. The synthesized materials were characterized using X-ray diffraction (XRD), N2 adsorption-desorption, Fourier transform infrared (FT-IR) spectroscopy, field-emission scanning wlectron microscopy (FE-SEM), and thermogravimetric analysis (TGA). The adsorption of a refractory sulfur compound, namely,...
Synthesis, Evaluation and Modification of Suitable Metal–Organic Frameworks (MOFS) for Desulfurization of Hydrocarbon Cuts
, M.Sc. Thesis Sharif University of Technology ; Khorashe, Farhad (Supervisor) ; Hajjar, Zeinab (Co-Supervisor) ; Soltanali, Saeed (Co-Supervisor)
Abstract
During fuel combustion, aromatic sulfur compounds in energy fuels convert into sulfur oxides, which cause major environmental problems such as acidic rain, global warming, and air pollution. Absorption desulfurization is one of the promising and economical methods to remove these sulfur compounds from fuels. Metal-organic frameworks (MOFs) are a class of nanoporous materials that are of interest for use as adsorbents due to their high specific surface area, unique surface adsorption properties, high adsorption capacity, tunable porosity, flexible dynamic behavior, and diversity in functional and metal groups. In this research, we first synthesized five metal-organic frameworks, namely...