Hydrodesulfurization of diesel in a slurry reactor

Complete Hydrodesulfurization of Dibenzothiophene via Direct Desulfurization Pathway over Mesoporous TiO2-Supported NiMo Catalyst Incorporated with Potassium

“…The adjustment in active sites, e.g., dispersion or promoter incorporation, could change their edge proportions to some degrees [6,14]. Moreover, the reaction condition of hydrodesulfurization was required to be optimized [15][16][17][18][19]. Many literatures reported that high H 2 S partial pressure severely inhibited the DDS pathway [18,19].…”

One-step synthesis, characterization and oxidative desulfurization of 12-tungstophosphoric heteropolyanions immobilized on amino functionalized SBA-15

“…58 Currently, conventional hydrodesulfurization (HDS) technology 59 has been applied to remove sulfur from the liquid fuel. However, 60 this technology requires the strict operating conditions, and takes 61 place in the reactor at high temperature (300-400°C), high pres-62 sure (3)(4)(5)(6), and in the presence of hydrogen [2]. Although it 63 is effective method for the removal of sulfur-containing cyclic 64 and aliphatic hydrocarbons, it has exhibited some inherent prob-65 lems in treating sulfur-containing aromatic hydrocarbon com- 66 pounds such as dibenzothiophene (DBT), benzothiophene (BT) 67 and their derivatives as the existence of benzene rings in molecular 68 enhances their aromatic [3][4][5].…”

“…However, 60 this technology requires the strict operating conditions, and takes 61 place in the reactor at high temperature (300-400°C), high pres-62 sure (3)(4)(5)(6), and in the presence of hydrogen [2]. Although it 63 is effective method for the removal of sulfur-containing cyclic 64 and aliphatic hydrocarbons, it has exhibited some inherent prob-65 lems in treating sulfur-containing aromatic hydrocarbon com- 66 pounds such as dibenzothiophene (DBT), benzothiophene (BT) 67 and their derivatives as the existence of benzene rings in molecular 68 enhances their aromatic [3][4][5]. 69 In order to overcome this drawback, many other technologies 70 have been applied such as oxidative desulfurization (ODS) [6][7][8], 71 adsorptive desulfurization [9], extraction by ionic liquids [10,11], 72 biodesulfurization [12].…”

Recycling the CoMo/Al2O3 catalyst for effectively hydro-upgrading shale oil with high sulfur content and viscosity

“…31 The higher hydrogen pressure ensures the solubility of more hydrogen into the shale oil feed, which in essence, is readily available on the surface of the catalyst for hydrodesulfurization reaction, and consequently increases the sulfur removal. 32 Fig. 3b shows that the liquid and gas yield increased with H 2 pressure, while the coke formation behaved in a reverse trend.…”