Ionic Liquid Promotes High Dispersion of V₂O₅ on 3D Porous g-C₃N₄ Carrier to Enhance Catalytic Oxidative Desulfurization Performance

Abstract

In this work, a series of supported catalysts V 2 O 5 / 3D g-C 3 N 4 were prepared by a solvothermal method and programmed calcination, where a vanadium-based ionic liquid (V-IL) [(C 8 H 17 ) 3 NCH 3 ] 3 H 3 V 10 O 28 was used as the vanadium source and 3D porous carbon nitride (3D g-C 3 N 4 ) acted as the carrier. The detailed structural and compositional characterization results show that the use of V-IL promotes the high dispersion of V 2 O 5 on the carrier and effectively avoids the problem of agglomeration. Therefore, the catalytic oxidative desulfurization activity of V 2 O 5 /3D g-C 3 N 4 is greatly enhanced, and the content of dibenzothiophene in model oil can be effectively reduced to 1.2 ppm under appropriate conditions. The recycling capacity and the possible process of the oxidative desulfurization were discussed.

Boosting Catalytic Oxidative Desulfurization Performance over Yolk–Shell Nickel Molybdate Fabricated by Defect Engineering

“…By conducting free radical trap tests to determine the catalytic active intermediates during the reaction. Normally, p -benzoquinone (BQ) and dimethyl sulfoxide (DMSO) are applied as scavengers to trap superoxide radicals (O 2 · – ) and hydroxyl radicals ( · OH), respectively. − As shown in Figure a, the catalytic activity is slightly affected after adding BQ into the reaction system. However, when DMSO is added, the desulfurization efficiency is completely inhibited.…”

Assessment of Reaction Parameters in the Oxidative Desulfurization Reaction

“…The results indicated that the activity of the catalysts was influenced by factors such as the surface area, titania dispersion, and Ti loading. However, increasing the Ti loading to more than 50% resulted in a decrease in the number of surface-active Ti species, which may have led to a decline in catalytic activity. ,, Antanse-phased TiO 2 has received significant attention for its photocatalytic ability to remove S compounds as a result of its chemical stability, non-toxicity, and high adsorptive property . Shen et al conducted a study using TiO 2 nanoparticles as an amphiphilic catalyst and increased the loading amount from 1.27 to 9.85 wt %.…”

Phosphotungstic-Acid-Based Ionic Liquid Catalyst for Efficient Photocatalytic Oxidative Desulfurization under Visible Light

“…However, pure HPAs generally have poor thermal stability and are easily soluble in polar solvents, making them difficult to recover and reuse when used as catalysts . In view of the characteristics of ionic liquids (ILs) and the widespread application as catalysts, if HPAs are combined with organic cations to form new HPA-based ionic liquid catalysts, they would be able to solve the above problems while retaining excellent catalytic performance of HPAs. − …”