Development of graphitic carbon nitride supported novel nanocomposites for green and efficient oxidative desulfurization of fuel oil

Abstract

The catalysts utilized for oxidative desulfurization have acquired significant attention and ability to improve the quality of the fuel oil by removing sulfur. In this work, the catalysts used for oxidative desulfurization include CoWO4 and Bi2WO6 with graphitic carbon nitride (g-C3N4) as support were synthesized by the one-pot hydrothermal method. Graphitic carbon nitride was obtained by thermal polycondensation of melamine at 550°C for 5 h. These catalysts were homogeneously dispersed on the surface of the support and their structure, morphology, and properties were determined by different characterization techniques (Powder X-Ray Diffractometer, Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy and Energy Dispersive X-Ray Spectroscopy, Specific Surface Area (Brunauer, Emmett and Teller (SBET)). The parameters that affect the efficiency of the desulfurization process such as catalyst amount, amount of oxidizing agent, and reaction temperature have been optimized thoroughly. The oxidative desulfurization reaction was studied in terms of kinetics which shows that reaction is pseudo first order. The thermodynamic studies revealed that the reaction is endothermic and spontaneous in nature. The results determined that the catalytic efficiency for the removal of sulfur (as dibenzothiophene) is more than 90% in the presence of support (g-C3N4) to obtain sulfur free fuel.

Deep extractive and catalytic oxidative desulfurization of liquid fuels by using iron(iii) based dication ionic liquids

“…They significantly improve their adsorption capacity and develop strong interaction between the extracting substance and the DcILs in comparison to monocationic ILs. 25 Keeping these aspects in view and in continuation to our previous work, [26][27][28] five DcILs have been synthesized and exploited as catalysts in the extraction and catalytic oxidative desulfurization (ECODS) procedure using hydrogen peroxide as an oxidizing agent. The data revealed that the combined effects of extractive and catalytic functions of the synthesized DcILs have been established and found to be an efficient and costeffective method for the oxidative desulfurization process.…”

MOFs for desulfurization of fuel oil: Recent advances and future insights

“…[ 35 ] Similarly, for ODS various metal‐based catalysts such as metal oxides, metal oxides supported on various supports like macroporous polyacrylic cationic exchange resins, graphitic carbon nitride and graphene oxides, metal complexes, POMs, ionic liquids (ILs), titanosilicates, fenton and fenton‐like catalyst and MOFs are reported. [ 36–41 ]…”

“…[35] Similarly, for ODS various metalbased catalysts such as metal oxides, metal oxides supported on various supports like macroporous polyacrylic cationic exchange resins, graphitic carbon nitride and graphene oxides, metal complexes, POMs, ionic liquids (ILs), titanosilicates, fenton and fenton-like catalyst and MOFs are reported. [36][37][38][39][40][41] Metal-organic framework (MOF) as a modern, stateof-the-art and emerging class of porous crystal materials have been comprehensively explored because of their facile and reticular synthesis and several prospective applications. They are known as coordination polymers and are obtained by connecting cluster units or metal cations to multitopic organic moieties called as linkers through coordinate or weak covalent bonding to form 3D network.…”

Facile synthesis of zirconia supported nanomaterials for efficient photocatalytic applications

“…A variety of literature has been published for photodegradation of dyes and organic pollutants. [20][21][22][23][24][25][26] However, there are limited studies on zirconia-based composites for photodegradation of dyes. Regarding the overhead remarks, this study comprises the synthesis of Fe-and Nidoped ZrO 2 materials and their performance for the first time for photodegradation of MB, MG, and mixtures of dyes.…”