Abstract
The organosulfur compounds present in liquid fuels are hazardous for health, asset, and the environment. The photocatalytic desulfurization technique works at ordinary conditions and removes the requirement of hydrogen, as it is an expensive gas, highly explosive, with a broader flammability range and is declared the most hazardous gas within a petroleum refinery, with respect to flammability. The projected work is based on the synthesis of V2O5 microspheres for photocatalytic oxidation for the straight-run diesel (SRD) and diesel oil blend (DOB). The physicochemical properties of V2O5 microspheres were examined by FT-IR, Raman, UV-vis DRS, SEM, and Photoluminescence evaluations. The as-synthesized photocatalyst presented a trivial unit size, a narrow bandgap, appropriate light-capturing capability, and sufficient active sites. The desulfurization study discovered that the anticipated technique is substantial in desulfurizing DOB up to 37% in 180 min using methanol as an interfacing agent. Furthermore, the outcome of employing a range of polar interfacing solvents was examined, and the 2-ethoxyethanol elevated the desulfurization degree up to 51.3%. However, the anticipated technology is constrained for its application in sulfur removal from SRD. Additionally, the mechanism for a photocatalytic reaction was seen in strong agreement with pseudo-first-order kinetics. The investigated photocatalyst exhibited a compromised recyclability and regeneration tendency.
Highlights
There is a high demand for liquid fuels globally
The organosulfur compounds present in liquid fuels are poisonous for the petroleum refinery’s reforming catalyst and cause a negative influence on the ambient air quality by the release of the oxides of sulfur formed during the combustion process, leading towards the increase in global warming, haziness, acidic raining, and to becoming a significant source of air pollution
The kapp of DOB-0.04 is three times higher than SRD-1.21. These results suggest that the aerobic photocatalytic oxidation technology is sufficient for desulfurizing the diesel oil blend, while the system’s efficiency is not adequate to desulfurize the straight-run diesel effectively
Summary
There is a high demand for liquid fuels globally. The organosulfur compounds present in liquid fuels are poisonous for the petroleum refinery’s reforming catalyst and cause a negative influence on the ambient air quality by the release of the oxides of sulfur formed during the combustion process, leading towards the increase in global warming, haziness, acidic raining, and to becoming a significant source of air pollution. Legislative authorities have structured stringent sulfur requirements for this purpose [4]. The developed countries such as Japan have introduced the maximum sulfur limit of ten ppm in motor gasoline since 2017, regulated by JIS K standard 2022
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