V or Mn zeolite catalysts for the oxidative desulfurization of diesel fractions using dibenzothiophene as a probe molecule: Preliminary study

Dealumination-controlled strategy mediates Ti–Y zeolite with cooperative active sites for selective oxidations

“…Catalytic productivity was defined as grams of dibenzothiophene converted hourly per gram of catalyst per gram of H 2 O 2 . As illustrated in Table 2, the Ti–Y-12-50 catalyst exhibited unprecedented catalytic productivity (75.5 g −1 h −1 ) with aqueous H 2 O 2 as the oxidant in oxidative removal of DBT compared to other heteroatom-containing zeolite based catalysts, for example, Mn-ZSM-5 (0.4 g −1 h −1 ), 43 Ti-MWW (4.3 g −1 h −1 ), 44 Ti-MCM-41 (9.1 g −1 h −1 ) 45 and Ta-beta (25.6 g −1 h −1 ). 10 Such high catalytic performance of Ti–Y-12-50 urged us to employ it in other selective oxidations, in this case Baeyer–Villiger oxidation.…”

Formação em ciências: estudos sobre absorção química para mitigação da chuva ácida antrópica

“…A redução das emissões dos gases de enxofre também pode incluir o uso de absorvedor, uma mistura de água e calcário é pulverizada sobre o gás de enxofre (de Mello et al, 2020).…”

Batch Oxidative Desulfurization of Model Light Gasoil over a Bimetallic Nanocatalyst

“…The choice of a suitable catalyst for the ODS process is regarded as a crucial factor for selectivity and sulfur removal efficiency. High oxidation state transition metals on inorganic supports such as alumina and zeolites are the predominant active catalysts for Cat-ODS [15,[28][29][30]. Furthermore, hybrid inorganic nanocomposites (NCs) could also be a novel strategy for developing multifunctional nanocatalysts with catalytic and adsorptive capabilities that are ideal for the ODS process [31][32][33][34][35].…”