Porous phosphomolybdate-based poly(ionic liquid) hybrids with reversible water absorption for enhancement of oxidative desulfurization

Design and Synthesis of Amphiphilic Catalyst [C16mim]5VW12O40Br and Its Application in Deep Desulfurization with Superior Cyclability at Room Temperature

“…The strong and sharp diffraction peaks of K 4 VW 12 at 2θ = 8°, 17–21°, and 25–38° were attributed to its Keggin structure. , The strongest diffraction peak near 8° was still observed for VW 12 –IL, indicating the successful combination of POM and IL and stabilization of the POM structure. However, the intensity of the peaks at 15–40° were weakened and broadened, indicating that the as-prepared catalysts were transformed into an amorphous state. , …”

“…However, the intensity of the peaks at 15−40°were weakened and broadened, indicating that the as-prepared catalysts were transformed into an amorphous state. 43,48 XPS Spectra. XPS can provide information on elemental composition, chemical state, and atomic valence state for catalysts.…”

“…39 Such a "polarity strategy" would not only accelerate the ODS reaction but also facilitate the enrichment and utilization of high-value-added sulfones. 40−42 Based on the previous work of our research group, 35,43 a series of VW 12 -based ionic liquid catalysts with different alkyl chain lengths were synthesized and applied to the catalytic removal of aromatic sulfides at room temperature (298 K) with H 2 O 2 as the oxidant. Among them, C 16 VW 12 could achieve 100% conversion and selectivity at room temperature in 50 min with only 10 mg catalyst dosage, and it could be recycled for up to 23 rounds.…”

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

“…First, 4-MDBT and 4,6- DMDBT were chose as two substrates in real oil to investigate the catalytic ODS activity. 23 As exhibited in Figure 3(A), the oxidations of DBT, 4-MDBT, and 4,6-DMDBT were 99.4%, 96.2%, and 90.7% in 5 h, respectively. The desulfurization efficiency decreases in turn are mainly due to the steric hindrance of methyl groups, since the electron cloud density on sulfur atoms is very close.…”

“…To fully evaluate the catalytic property of 30% V 2 O 5 /3D g-C 3 N 4 , multiple tests were conducted. First, 4-MDBT and 4,6-DMDBT were chose as two substrates in real oil to investigate the catalytic ODS activity . As exhibited in Figure (A), the oxidations of DBT, 4-MDBT, and 4,6-DMDBT were 99.4%, 96.2%, and 90.7% in 5 h, respectively.…”