“…Adsorbents have been limited in organosulfur compound selectivity, as well as low adsorption capacity, while the organosulfur extraction solvents such as dimethylsulfoxide (DMSO) and N,N-dimethylformamide (DMF) have high boiling points, and hence the solvent recovery may be impossible [1,2]. The use of ODS, BDS, ADS and EDS desulfurization techniques are currently limited, as they may pose problems for larger scale applications [1,2]. As a result, more attention is required to improve the HDS system by redesigning the current HDS catalysts' inadequacies and by introducing chelating ligands and precious metals (PGMs), which could drive HDS under mild conditions .…”