Extractive desulfurization of fuels using trialkylamine-based protic ionic liquids

Hadi

2021

Applied Organom Chemis

In the view of practical applications, synthesizing green and recyclable nanocatalysts under mild conditions were always been desired by scientists and industries. In this study, in order to obtain the clean gasoline, a novel nanocomposite (PMo12O40@MnFe2O40) based on polyoxometalate and ceramic was synthesized successfully with Aloe vera leaf extract by sol–gel method in extremely mild conditions. PMo12O40@MnFe2O40 is proposed as a green new recyclable and economic nanocatalyst for deep catalytic oxidative desulfurization (CODS) of real and model fuel (DBT, Th, and BT). The characterizations were carried out by different analysis methods including Fourier transform infrared (FT‐IR), X‐ray diffraction (XRD), scanning electron microscopy (SEM), and energy‐dispersive X‐ray spectroscopy (EDX), and the successful synthesis and immobilization were approved. After conducting the PMo12O40@MnFe2O4 in the CODS processes, optimum effective properties were investigated. The average efficiency of the nanocatalyst was found 98% for DBT and 96% for real fuel by optimum values of the properties (catalyst dosage, temperature, oxidation system, and different types of catalysts), not to mention its great ability in reusability with 96% of effectiveness after five runs. Moreover, the CODS mechanism is proposed, and based on the obtained results, the kinetics were in agreement with the pseudo‐first‐order model. Based on the obtained incomparable results, it could be considered as an effective, industrial‐scale, and green nanocatalyst for the desulfurization of refractory sulfur compounds in extremely mild conditions.

Section: Introductionmentioning

confidence: 99%

Synthesis of new nanocomposite based on ceramic and heteropolymolybdate using leaf extract of Aloe vera as a high‐performance nanocatalyst to desulfurization of real fuel

Hadi

2021

Applied Organom Chemis

“…However, this exchangeable hydrogen on the cationic core results in low thermal stability of PILs. Due to the relatively easy synthesis procedure and non-requirement of purification steps, protic ILs receive much attention in various applications such as; electrolyte for lithium-ion rechargeable batteries (Menne et al, 2013;Vogl et al, 2014), extraction processes (Wang et al, 2020;Rodrigues et al, 2018;Janssen et al, 2016).…”

Section: Protic Ionic Liquids-based Electrolytesmentioning

confidence: 99%

Prospects and Design Insights of Neat Ionic Liquids as Supercapacitor Electrolytes

2021

Ionic liquids present an opportunity to design efficient electrolytes for supercapacitors, which are among the most extensively studied electrochemical energy storage systems. Ionic liquids are promising candidates for supercapacitor electrolytes because they can eliminate issues associated with aqueous and organic solvent-based electrolytes, such as narrow operating potential windows, safety, and performance. The full potential of ionic liquids as electrolytes in supercapacitors need to be further explored due to promising previous efforts invested in ionic liquid-based electrolyte systems for supercapacitor. This review aims to provide an outlook on neat (pure) ionic liquids applied as supercapacitor electrolytes to isolate the prospects and influences of ionic liquids in supercapacitor electrolyte systems. This work primarily focuses on ionic liquid chemistry links to their performance in supercapacitor electrolytes. Deduced features of importance to supercapacitor performance include the presence of functional groups in the ionic liquids, the ionic liquids physicochemical and electrochemical properties. With the different classes of ionic liquids evaluated, ion size-pore size matching of ionic liquid electrolytes and electrode materials, respectively, affect resulting capacitances and energy densities. Several design strategies to enhance supercapacitor performance by improving ionic liquid transport and electrochemical properties are proposed. The proposed strategies and obtained insights consequently informed further discussions on challenges associated with the commercialization of ionic liquids electrolytes.

“…To overcome these drawbacks, it is necessary to develop alternative desulfurization technologies. Several desulfurization technologies have been developed, such as extractive desulfurization (EDS) (Wang et al 2020;Song et al 2017), adsorptive desulfurization (ADS) (Luo et al 2019) and oxidative desulfurization (ODS) (Sun et al 2004;Wu et al 2017;Xun et al 2016;Shi et al 2017;Ren et al 2018;Hao et al 2017;Jiang et al 2019a, b, c, d). Among them, ODS is one of the promising desulfurization approaches because refractory sulfur components could be easily removed with ODS under mild conditions (Bryzhin et al 2019;Bhadra and Jhung 2019).…”

Section: Introductionmentioning

confidence: 99%

Aerobic oxidative desulfurization via magnetic mesoporous silica-supported tungsten oxide catalysts

et al. 2020

It is usually difficult to remove dibenzothiophenes from diesel fuels by oxidation with molecular oxygen as an oxidant. In the study, tungsten oxide was supported on magnetic mesoporous silica by calcination to form a magnetically separable catalyst for oxidative desulfurization of diesel fuel. By tuning different calcining temperatures, the catalyst calcined at 500 °C showed a high catalytic activity with molecular oxygen as the oxidant. Under optimal reaction conditions, the sulfur removal of DBT reached 99.9% at 120 °C after 8 h. Furthermore, the removals of 4-methyldibenzothiophene and 4,6-dimethyldibenzothiophene could also get up to 98.2% and 92.3% under the same conditions. The reaction mechanism was explored by selective quenching experiments and FT-IR spectra.