Dynamically-generated TiO2 active site on MXene Ti3C2: Boosting reactive desulfurization

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

“…Among the frontline desulfurization routes, ODS has recently become a research hotspot, attributed to its attractive advantages such as moderate operating conditions, magnificent selectivity, utilization of safe and low-priced oxidant and prominent efficiency in removing aromatic sulfur constituents from diesel fuels. [22][23][24] For instance, scientists showed that the utilization of ODS to purify diesel fuel achieved up to 92% sulfur removal, which was far superior to the EDS method which attained only 45%. 25 In addition to the appealing merits, the burgeoning market demand for ultra-low-sulfur fuels due to strict environmental regulations and the limitations of the ultra-deep HDS process have ignited an abrupt surge of research interest in the ODS of fuels, especially in the past 10 years.…”

Two-dimensional carbide/nitride (MXene) materials in thermal catalysis

“…Reproduced with permission. 96 Copyright 2021, Elsevier. (d) DBT conversion rates with h-TC/TAC-x-y prepared at different alkali concentrations and etching temperatures, where x is the concentration of the KOH etchant, and y is the etching temperature.…”

“…127 As for the function in facilitating the generation of free radical particles, the desulfurization reaction catalyzed by h-TC/TAC is a good example. 44,96 In this reaction, the -O and -OH termination groups produced in the alkaline selective etching can interact strongly with Ti to form Ti-O and Ti-OH structures, and in turn, these unique structures act as active centers to accelerate the oxygen molecular transformation into radicals. In situ electron spin resonance (ESR) spectroscopy revealed that the oxygen molecules were likely to be converted into cOH and cO 2 À radicals on these Ti-O and Ti-OH structures.…”

“…(c) DBT conversion with different catalysts. Reproduced with permission 96. Copyright 2021, Elsevier.…”

Investigation of Amine-Based Ternary Deep Eutectic Solvents for Efficient, Rapid, and Reversible SO2 Absorption

“…Millions of tons of sulfur dioxide (SO 2 ), mainly originating from the combustion of fossil fuels, are emitted per year. − The excessive emission of SO 2 could induce a series of environmental issues and would be harmful to people’s health. − Thus, the effective capture of SO 2 has received constant attention in recent decades . Traditionally, flue gas desulfurization methods are considered as the most reliable strategy, including the lime–limestone scrubbing method and ammonia scrubbing method. − However, tons of low-grade gypsum wastewater would be produced simultaneously with these methods, causing secondary pollution and further treatment .…”