Ultra-deep desulfurization of transportation fuels via charge-transfer complexes under ambient conditions

Mesoporous TiO2–SiO2 adsorbent for ultra-deep desulfurization of organic-S at room temperature and atmospheric pressure

“…The involved ADS mechanisms were elucidated as p-complexation, S-M chemisorption, S-H interactions, H-bonding interactions and van der Waals interactions. [34][35][36][37] It was also pointed out that specic surface area and surface acidity in the adsorption process could inuence the overall adsorption performance of different types of adsorbents. According to Lewis acid-base theory, most thiophene-based sulfur compounds in commercial fuels appear to be Lewis bases, which are easily adsorbed by Lewis acidic sites.…”

Immobilization of an Anthracene‐Tagged Ruthenium Complex on a 2,4,7‐Trinitrofluoren‐9‐one‐Grafted Silica: Efficiency and Recyclability in Olefin Metathesis Reactions

“…The donor and electron‐deficient molecule lie in a nearly parallel plane, with a deviation of only 4.6°. The mean interplanar separation is 3.4 Å, an expected value relative to the few ones reported for analogous compounds 23…”

Regeneration of AgXO@SBA-15 for reactive adsorptive desulfurization of fuel

“…However, Type H 1 loops are observed on the Ag X O@SBA-15, while an H 2 hysteresis loop is observed in SBA-15 (Kruk and Jaroniec 2001). In fact, an H 1 hysteresis loop was often reported for the materials that consisted of agglomerates or compacts of approximately spherical particles arranged in a fairly uniform way (Sing et al 1985), and H 2 hysteresis loops were observed for materials with relatively uniform channel-like pores (Kruk and Jaroniec 1997), which correspond to the silver impregnation and agglomeration after regeneration of Ag X O@SBA-15 and mesoporous channels of SBA-15, respectively. Meanwhile, the adsorbed N 2 amounts decreased after loading Ag X O on SBA-15, but only a gentle decline was observed in Ag X O@SBA-15 in four consecutive regenerations, suggesting that the porosity of Ag X O@SBA-15 remained almost the same with only a slight decline.…”

“…However, HDS achieves less efficiency in the removal of heterocyclic S-compounds such as benzothiophene (BT), dibenzothiophene (DBT) and their derivatives (González et al 2016). Therefore, developing alternative non-hydrotreating approaches which could be used under ambient conditions and without high hydrogen consumption for effective ultra-deep desulfurization has attracted much interest (Miao et al 2016;Sévignon et al 2005).…”