Deep eutectic solvents as alternative green solvents for the efficient desulfurization of liquid fuel: A comprehensive review

Tahir, Suman; Qazi, Umair Yaqub; Naseem, Zubera; Tahir, Noor Ayuma Mat; Zahid, Muhammad; Javaid, Rahat; Shahid, Imran

doi:10.1016/j.fuel.2021.121502

Cited by 74 publications

(34 citation statements)

References 121 publications

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“…Deleterious refractory organosulfur compounds in fuel oils have contributed to SOx emissions [1,2]. Therefore, it has become very important to remove these compounds due to the introduction of the strict environmental regulations of the Euro V limits of 10 ppmS in diesel fuels [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…However, other methods of fuel desulfurization have been reported, and these techniques are bio-desulfurization (BDS), oxidative-desulfurization (ODS), adsorptive and extractive desulfurization (ADS and EDS) [1,2]. Bio-desulfurization (BDS), which involves the use of sulfur-consuming bacteria to desulfurize fuels, is nonetheless limited in meeting very deep desulfurization, as 50-200 ppmS have been reported [1].…”

Section: Introductionmentioning

confidence: 99%

“…Bio-desulfurization (BDS), which involves the use of sulfur-consuming bacteria to desulfurize fuels, is nonetheless limited in meeting very deep desulfurization, as 50-200 ppmS have been reported [1]. The ODS process of recalcitrant sulfur-containing compounds such as dibenzothiophene have been reported to produce nonessential side products during oxidation [2]. Adsorptive and extractive desulfurization (ADS and EDS) is a process which employs the use of use of solid sorbents and extraction solvents for removing the recalcitrant sulfur-containing compounds, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Adsorptive and extractive desulfurization (ADS and EDS) is a process which employs the use of use of solid sorbents and extraction solvents for removing the recalcitrant sulfur-containing compounds, respectively. Adsorbents have been limited in organosulfur compound selectivity, as well as low adsorption capacity, while the organosulfur extraction solvents such as dimethylsulfoxide (DMSO) and N,N-dimethylformamide (DMF) have high boiling points, and hence the solvent recovery may be impossible [1,2]. The use of ODS, BDS, ADS and EDS desulfurization techniques are currently limited, as they may pose problems for larger scale applications [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Adsorbents have been limited in organosulfur compound selectivity, as well as low adsorption capacity, while the organosulfur extraction solvents such as dimethylsulfoxide (DMSO) and N,N-dimethylformamide (DMF) have high boiling points, and hence the solvent recovery may be impossible [1,2]. The use of ODS, BDS, ADS and EDS desulfurization techniques are currently limited, as they may pose problems for larger scale applications [1,2]. As a result, more attention is required to improve the HDS system by redesigning the current HDS catalysts' inadequacies and by introducing chelating ligands and precious metals (PGMs), which could drive HDS under mild conditions .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Adding Chelating Ligands on the Catalytic Performance of Rh-Promoted MoS2 in the Hydrodesulfurization of Dibenzothiophene

2021

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Hydrodesulfurization (HDS) is a widely used process currently employed in petroleum refineries to eliminate organosulfur compounds in fuels. The current hydrotreating process struggles to remove organosulfur compounds with a steric hindrance due to the electronic nature of the current catalysts employed. In this work, the effects of adding chelating ligands such as ethylenediaminetetraacetic acid (EDTA), citric acid (CA) and acetic acid (AA) to rhodium (Rh) and active molybdenum (Mo) species for dibenzothiophene (DBT) HDS catalytic activity was evaluated. HDS activities followed the order of RhMo/ɣ-Al2O3 (88%) > RhMo-AA/ɣ-Al2O3 (73%) > RhMo-CA/ɣ-Al2O3 (72%) > RhMo-EDTA/ɣ-Al2O3 (68%). The observed trend was attributed to the different chelating ligands with varying electronic properties, thus influencing the metal–support interaction and the favorable reduction of the Mo species. RhMo/ɣ-Al2O3 offered the highest HDS activity due to its (i) lower metal–support interaction energy, as observed from the RhMo/ɣ-Al2O3 band gap of 3.779 eV and the slight shift toward the lower BE of Mo 3d, (ii) increased Mo-O-Mo species (NMo-O-Mo ~1.975) and (iii) better sulfidation of Rh and MoO in RhMo/ɣ-Al2O3 compared to the chelated catalysts. The obtained data provides that HDS catalytic activity was mainly driven by the structural nature of the RhMo-based catalyst, which influences the formation of more active sites that can enhance the HDS activity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of Adding Chelating Ligands on the Catalytic Performance of Rh-Promoted MoS2 in the Hydrodesulfurization of Dibenzothiophene

2021

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Completely Inorganic Deep Eutectic Solvents for Efficient and Recyclable Liquid–Liquid Interface Catalysis

Xu,

Yin,

et al. 2024

Advanced Materials

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Organic acid‐based deep eutectic solvents (DESs) as catalysts always suffer from weak stability and low recyclability due to the accumulation of organic oxidative products in the DES phase. Herein, we construct a completely inorganic deep eutectic solvent (IDES) ZnCl2/PA with zinc chloride (ZnCl2) and phosphoric acid (PA) as precursors to realize liquid‐liquid interface catalysis for desulfurization of fuel and product self‐separation for the first time. Owing to the inorganic nature, the organic oxidative products are accumulated at the interface between the IDES and fuel rather than the IDES phase. With this unique feature, the IDES can be reused for at least 15 times without any further treatment in oxidative desulfurization process, showing a state‐of‐the‐art cycle‐regeneration stability of the IDES. Moreover, compared with the reported organic DESs, the IDES also reveals more attractive catalytic oxidative desulfurization performance. Experimental and theoretical studies indicate that the strong coordination Zn···O = P and the strong adsorption energy between IDES and sulfides enhance the activation of H2O2 to reactive oxygen species, leading to the superior catalytic performance in oxidative desulfurization of fuel.This article is protected by copyright. All rights reserved

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H₂S absorption with deep eutectic solvents: Low partial pressure capture and thermodynamic analysis

et al. 2023

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In the present work, a series of deep eutectic solvents (DESs) based on organic amine as hydrogen bond acceptors (HBAs), and ethylene glycol (EG) as hydrogen bond donor (HBD) were prepared for the H 2 S absorption. Thermal decomposition temperature, HBA mass ratios, alkalinity and structure effect on absorption behavior were systematically investigated. The reaction mechanism was demonstrated by FT-IR and 1 H NMR spectroscopy. The reaction equilibrium constants, Henry constant, enthalpy and entropy change were calculated based on the thermodynamic model to reveal the interactions between DESs and H 2 S. It was found that H 2 S absorption capacities of the most of DESs with HBA/HBD mass ratio of 1:4 was close to 1 mol/mol at 303.15 K and 0.2 bar. The absorption capacity of DESs depends on the alkalinity and structure of HBAs; Additionally, a good linear correlation between the alkalinity of HBA and the absorption equilibrium constant (lnK) of DESs to H 2 S was found.

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Deep eutectic solvents as alternative green solvents for the efficient desulfurization of liquid fuel: A comprehensive review

Cited by 74 publications

References 121 publications

Effect of Adding Chelating Ligands on the Catalytic Performance of Rh-Promoted MoS2 in the Hydrodesulfurization of Dibenzothiophene

Effect of Adding Chelating Ligands on the Catalytic Performance of Rh-Promoted MoS2 in the Hydrodesulfurization of Dibenzothiophene

Completely Inorganic Deep Eutectic Solvents for Efficient and Recyclable Liquid–Liquid Interface Catalysis

H₂S absorption with deep eutectic solvents: Low partial pressure capture and thermodynamic analysis

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Deep eutectic solvents as alternative green solvents for the efficient desulfurization of liquid fuel: A comprehensive review

Cited by 74 publications

References 121 publications

Effect of Adding Chelating Ligands on the Catalytic Performance of Rh-Promoted MoS2 in the Hydrodesulfurization of Dibenzothiophene

Effect of Adding Chelating Ligands on the Catalytic Performance of Rh-Promoted MoS2 in the Hydrodesulfurization of Dibenzothiophene

Completely Inorganic Deep Eutectic Solvents for Efficient and Recyclable Liquid–Liquid Interface Catalysis

H2S absorption with deep eutectic solvents: Low partial pressure capture and thermodynamic analysis

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H₂S absorption with deep eutectic solvents: Low partial pressure capture and thermodynamic analysis