Catalytic oxidative desulfurization of a 4,6-DMDBT containing model fuel by metal-free activated carbons: the key role of surface chemistry

Abstract

Commercial micro/mesoporous activated carbons were utilized as metal-free catalysts for the desulfurization of a model fuel, i.e. 4,6-dimethyldibenzothiophene (4,6-DMDBT) in hexadecane, under ambient conditions. Oxidation of carbons led to a further catalytic improvement.

Metal Organic Frameworks as Desulfurization Adsorbents of DBT and 4,6-DMDBT from Fuels

“…The main qualities for an effective adsorbent include a simple synthesis route, adsorption at ambient conditions, high porosity, regeneration capability, and low environmental footprint. The removal of SCCs from fuels using adsorbents has been successfully tried, and some of the best performing and promising materials include materials such as activated carbons (ACs) [24][25][26][27][28][29][30][31][32][33], zeolites [34][35][36][37][38][39], mesoporous silica, alumina and related materials [40][41][42][43][44][45], and ion exchange resins [46,47].…”

A current overview of the oxidative desulfurization of fuels utilizing heat and solar light: from materials design to catalysis for clean energy

“…Similarly, Kampouraki et al tailored the surface chemistry of commercial activated carbon (SX PLUS) via oxidation reaction with sulfuric acid and nitric acid. 207 Profiting from the oxidation treatment, the number of acidic functional groups (carboxyl group) on the surface of SX PLUS was increased, which also denoted the enrichment of active sites. On the other hand, the other decisive factors in catalytic ODS, including the porosity and specific surface area of SX PLUS, experienced a significant diminution.…”

When sonochemistry meets heterogeneous photocatalysis: designing a sonophotoreactor towards sustainable selective oxidation

“…Additionally, heterogeneous photocatalysis is a success story for conventional organic synthetic chemistry. [10][11][12][13] However, a crucial drawback of photochemistry is that there are many cases, especially in aqueous media, wherein "nonselective" conversion cannot be avoided. 3,[14][15][16][17] Highly photoactive materials are widely studied for application in environmental remediation in order to decompose/degrade hazardous compounds, but in most of the cases the outcome is complete and non-selective mineralization.…”