Fabrication of various morphological forms of a g-C₃N₄-supported MoO₃ catalyst for the oxidative desulfurization of dibenzothiophene

Abstract

A series of catalysts consisting of nanosized MoO3 particles supported on carbon nitride with different morphologies of bulk g-C3N4 (BCN), tubulous g-C3N4 (TCN), and rod g-C3N4 (RCN) were synthesized. And...

Carbon-Based Materials for Oxidative Desulfurization and Denitrogenation of Fuels: A Review

“…The high surface area of AC is also suggested by Xiao et al (2014) as one of the reasons for the increased activity of HPW supported over AC compared to unsupported HPW in the ODS of thiophene (Th) in a mixed solvent simulating a gasoline matrix [91]. Other authors have also pointed out the high surface area and related high dispersion as relevant contributions of carbonaceous structures to the catalytic activity [92][93][94][95][96]. In contrast, the agglomeration of active centers was linked to a decrease in catalytic activity [97].…”

“…Wang et al (2020) [95] and Zhao et al (2017) [96] have proposed that g-C 3 N 4 was able to activate H 2 O 2 and form hydroxyl radicals (HO • ). Moreover, the carbon structure was also found to avoid the leaching of active species [113].…”

“…desulfurization rates were: >96% removal for 6 cycles (DBT), >85% for 4,6-DMDBT and 60% for BT. [95] DBT, BT or Th in n-Octane…”

Two POM-based compounds containing Zn-capped Keggin anions as decent heterogeneous catalysts for sulfur oxidation and CO2 cycloaddition reactions

“…6,7 In comparison with HDS, sulfide oxidization can not only remove sulfur pollu-tants efficiently but also be conducted under milder conditions. [8][9][10][11] In order to help enhance the reaction, many catalysts have been investigated for the sulfur oxidation reaction, whereas homogeneous catalysts have difficulty in the subsequent separation process. Thus, the development of efficient heterogeneous catalysts may be expected to facilitate the conversion of sulfide under mild conditions.…”

Catalytic decomposition of dibenzothiophene sulfone over K-based oxides supported on alumina

“…The first step is the thiophene organic sulfur-containing substrates being oxidized to the corresponding sulfones (Scheme 1(a)), and we report here our exploratory effort in the first step of the ODS of crude oil incorporated with oxidized sulfur decomposition. [2][3][4][5][6] The second step is the sulfones being removed by adsorption or extraction to achieve the purpose of desulfurization. [7][8][9][10] However, among the studies of ODS processes, [11][12][13][14] few studies deal with the treatment of the oxidized sulfur compounds or sulfones obtained (Scheme 1(b)).…”