An organic–inorganic hybrid compound constructed by polytungsto-vanadosilicate and hexadecyltrimethyl ammonium as an efficient catalyst for demercaptanization of crude oil

Green and efficient organic–inorganic hybrid nanocatalyst for oxidative desulfurization of gasoline

“…The oxidation reactivity of the sulfur‐containing compounds followed the order of DBT > BT > Th. According to the literature, the trend of electron density of the sulfur atom in these compounds is DBT (5.758) > BT (5.739) > Th (5.696) . It could be speculated that the partial electron charge on the sulfur atom had an effect on the reactivity of thiophenic molecules, as expressed by Xiao et al .…”

Phosphotungestovanadate immobilized on PVA as an efficient and reusable nano catalyst for oxidative desulphurization of gasoline

“…The products characterized by analytical instrument FT-IR, UV-vis, XRD and SEM. Several heteropolyoxometalate catalysts were prepared according to the literature procedure [25,26]. Typical actual gasoline (density 0.7968 g/mL at 15 °C, total sulphur content 0.424 wt.%) was used.…”

“…Besides produces the precursors of the acid rain (SO x ), their combustion in automobile engines also irreversibly poisons noble metal catalysts of the exhaust systems [24], an effective process that been done in this field is oxidative desulphurization that operates at mild reaction conditions. In continuation of our group researches on the syntheses and application of polyoxometalate in organic reactions [25][26][27][28], we hereby report the applicability of PWV/PVA for efficient desulphurization of gasoline to preparation of ultra-clean fuels. The catalytic performance of heterogeneous catalysts was tested on oxidation desulphurization (ODS) of gasoline and model sulphur compounds that exist in gasoline such as benzothiophene (BT) and thiophene (T), with acetic acid/hydrogen peroxide as the oxidizing reagent.…”

“…Hydrogen peroxide is one of the most attractive oxidants, mainly because it is environmentally clean and easily handled. It should be noted that during the ODS process, the H 2 O 2 was used in the presence of acetic acid (CH 3 COOH) as oxidants because acetic acid as an organic acid, reacts with H 2 O 2 to in situ produce peracid (CH 3 COOOH), which can efficiency convert organic sulphur to sulfones without forming a substantial amount of residual product [25,26]. Hydrogen peroxide in short-chain carboxylic acids (formic acid or acetic acid) is considered as the common oxidative desulphurization Table 7.…”

Oxidative desulfurization of gasoline catalyzed by IMID@PMA@CS nanocomposite as a high‐performance amphiphilic nanocatalyst

“…Recently, the surface modification of POM supported catalysts with hydrophilic and hydrophobic functional groups has proved to be an effective solution to form amphiphilic solid POM catalysts, which can be utilized in heterogeneous catalysis, allowing facile separation and recycling after operation . In continuation of our group researches on the synthesis and application of POM in organic reaction, we report the applicability of IMID@PMA@CS for efficient desulfurization of gasoline to preparation of clean fuels . In this study, the new class of phase transfer‐type nanocatalyst (IMID@PMA@CS) was synthesized and its catalytic activity in sulfur oxidation treatments evaluated.…”