Deep oxidative desulfurization with simultaneous oxidative denitrogenation of diesel fuel and straight run gas oil

Tungsten Nitride, Well‐Dispersed on Porous Carbon: Remarkable Catalyst, Produced without Addition of Ammonia, for the Oxidative Desulfurization of Liquid Fuel

“…As shown in Figure b, the DBT conversion increases noticeably as the reaction temperature increases from 30 to 60 °C. The catalyst shows very promising catalytic performance (≈80% conversion in 1 h of reaction) even at 45 °C, which is surprisingly very low compared to the reaction temperatures in previous studies . At 60 °C the conversion was saturated in 30 min of reaction; and the overall catalytic performance does not change much with further increase of the reaction temperature (such as 80 °C).…”

“…Figure a shows the conversion of DBT via oxidation over the WO 3 /pDC, W 2 N/pDC, and W 2 N‐W/pDC catalysts that obtained from the pyrolysis of PTA(5%)/pANI at three different temperatures of 700, 800, and 900 °C, respectively. The oxidation was done not only with the obtained catalysts via pyrolysis but also with WO 3 /ZrO 2 catalyst which was widely studied as ODS catalyst (therefore, can be regarded as a representative ODS catalyst) . As shown in Figure a, the efficiency of the catalysts for DBT conversion follows the order: W 2 N/pDC > WO 3 /pDC ∼ W 2 N‐W/pDC at all the reaction times.…”

“…On the other hand, various porous materials including carbon, metal oxide, silica, metal‐organic framework (MOF) were used to disperse those active metal species within the free pores and to increase the diffusivity of the thiophenics and oxidant molecules within those pores for facile/rapid oxidation. To date, numerous supported catalysts such as WO 3 /ZrO 2 , titanosilicate, TiO 2 /carbon, MoO 3 /carbon, ionic liquid/silica were successfully applied for ODS. The overall efficiency of a catalyst usually depends on some important parameters such as facile preparation, cost effectiveness, and ODS performance (fast kinetics, high turnover frequency (TOF), low activation energy ( E a ), and reusability).…”

Desulfurization and Denitrogenation Processes to Treat Diesel Using Mo(VI)‐Bipyridine Catalysts

“…Most of the processes reported in the literature focus only on the removal of sulfur compounds, with one well-studied example being oxidative desulfurization (ODS), which combines catalytic oxidation with liquid-liquid extraction to promote the removal of sulfur compounds without H 2 consumption [4][5][6]. There are a limited number of reports where ODS and oxidative denitrogenation (ODN) have been combined in a single process to simultaneously remove SCCs and NCCs [15][16][17][18][19]. Some of these stated high ODS and ODN efficiencies but using single sulfur and nitrogen oils [18,19], after several hours of reaction [15,16] and using t-BuOOH as oxidant [17].…”

Morphology‐Controlled Synthesis of CuO, CuO Rod/MWW Composite for Advanced Oxidation of Indole and Benzothiophene

“…In recent years, significant progress has been made in developing new processes for removal of sulfur and nitrogen compounds and reducing sulfur and nitrogen in oil derivatives. Advances have also occurred in the possibility of replacing this method with the traditional hydrogen desulfurization (HDS) or denitrogenation (HDN) methods . Major nitrogenous compounds in the crude oil include Pyridines (PYR), Aniline (ANL), Indole (IND), Acridine (ACR), Pyrrole (PRL), Quinolone (QUI), Carbazol (CBZ), Benz(c)acridine (BACR), Dibenzacridine (DBACR).…”