Oxidative desulfurization of diesel fuel with caprolactam-based acidic deep eutectic solvents: Tailoring the reactivity of DESs by adjusting the composition

Hao, Lingwan; Su, Ting; Hao, Dongmei; Deng, Changliang; Ren, Wanzhong; Lü, Hongying

doi:10.1016/s1872-2067(18)63091-8

Cited by 63 publications

(28 citation statements)

References 53 publications

(50 reference statements)

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“…According to the results of some previous works, the compositions of the DESs play a vital role for their physicochemical properties , , , , . Different desulfurization systems of acetamide‐based DESs with various molar proportions of acetamide and p ‐TsOH were investigated (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The C 2 H 5 NO/3 p ‐TsOH demonstrated a remarkable desulfurization activity. In agreement with our previous work, there is a correlation between the composition and chemical properties , , , , . Finally, the C 2 H 5 NO/3 p ‐TsOH system demonstrating the best oxidation desulfurization activity was chosen for further research.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, DESs have become suitable candidates for desulfurization processes. They were not only employed as extractants or reaction medium for desulfurization or photochemical desulfurization, but also as catalyst for extraction and catalytic oxidation desulfurization (ECODS) , .…”

Section: Introductionmentioning

confidence: 99%

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Removal of Dibenzothiophene from Diesels by Extraction and Catalytic Oxidation with Acetamide‐Based Deep Eutectic Solvents

Hao

Deng

et al. 2019

Chem Eng & Technol

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A series of acetamide-based deep eutectic solvents (DESs) with different proportions were prepared. Extraction and catalytic oxidation desulfurization (ECODS) of the acetamide-based DESs were investigated and the process was optimized. Such DESs with a molar ratio of acetamide and p-TsOH of 1/3 (C 2 H 5 NO/3p-TsOH) exhibits such a remarkable catalytic activity that the dibenzothiophene (DBT) removal could reach 100 % under optimized conditions. C 2 H 5 NO/3p-TsOH was used for the oxidative desulfurization of actual commercial diesel. The sulfur removal of diesel achieved up to 98 %. C 2 H 5 NO/3p-TsOH could be recycled six times and the desulfurization activity was slightly decreased. Evaluation of the mechanism indicated that oxidative desulfurization (ODS) was realized via dual activation of acetamide-based DESs. A novel and effective way for deep desulfurization of diesel is provided.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Removal of Dibenzothiophene from Diesels by Extraction and Catalytic Oxidation with Acetamide‐Based Deep Eutectic Solvents

Hao

Deng

et al. 2019

Chem Eng & Technol

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“…Based on environmental requirements, the content of sulfur in gasoline must be limited. Accordingly, the reduction of the sulfur content of gasoline via hydrodesulfurization [1], adsorption desulfurization [2], oxidation desulfurization [3], alkylation desulfurization [4] and biocatalytic desulfurization [5] has been well reported. However, these desulfurization processes have drawbacks, so the latest high-efficiency deep desulfurization process needs to be expanded.…”

Section: Introductionmentioning

confidence: 99%

Improved Desulfurization Performance of Polyethyleneglycol Membrane by Incorporating Metal Organic Framework CuBTC

et al. 2020

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In this paper, copper benzene-1,3,5-tricarboxylate (CuBTC) was incorporated into polyethylenglyol (PEG) to prepare a mixed matrix membrane (MMM) for pervaporation desulfurization. The characterization results showed that the prepared CuBTC particles had an ideal octahedral shape and micropores. The Cu2+ in CuBTC interacts with thiophene via π-complexation, thus enhancing the separation performance of the hybrid membranes. The effect of CuBTC content and the operating condition on the pervaporation performance of the MMMs was investigated. An optimal pervaporation separation performance was acquired with a permeation flux of 2.21 kg/(m2·h) and an enrichment factor of 8.79, which were increased by 100% and 39% compared with the pristine PEG membrane. Moreover, the CuBTC-filled PEG membrane showed a good stability in the long-term desulfurization under a high operating temperature of 75 °C for five days.

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“…Four types of oxygen atoms exist in the Keggin structure ( Scheme 1 a) . Tetrahedral oxygen (O a ) is coordinated with heteroatom P, bridging oxygen (O b ) is connected with different trimetallic clusters (Mo 3 O 10 ), bridging oxygen (O c ) is in the same trimetallic cluster (Mo 3 O 10 ), and terminal oxygen (O d ) has a high mobility [ 9 ]. O d can be easily lost to create oxygen vacancy, which is considered as the active site as we previously reported [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect between Zr-MOF and Phosphomolybdic Acid with the Promotion of TiF4 Template

et al. 2020

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Metal-Organic Framework (MOF) materials are often modified or functionalized, and then the crystal size and morphology of MOF materials are changed. In the process of preparing UiO-66 confined phosphomolybdic acid (PMA) composites (PU), the TiF4-modified PU (PMA + UiO-66) composite catalyst (TiF4-PU) was successfully synthesized by adding titanium tetrafluoride, and the catalytic desulfurization activity was excellent. Similarly, the reaction mechanism was investigated by means of infrared spectroscopy, Raman spectroscopy, XPS, and UV/Vis spectroscopy. The results show that the addition of TiF4 not only changes the appearance and color of the catalyst, but also changes the valence distribution of the elements in the catalyst. The number of oxygen vacancies in the MOF increases due to the addition of TiF4, and more electrons are transferred from the Zr-MOF to PMA to form more Mo5+, which improved the performance of oxidative desulfurization in comparison. Thus, a stronger strong metal-support interaction (SMSI) effect is observed for TiF4-modified PU catalysts. In addition, the quenching experiment of free radicals shows that ·OH radical is the main active substance in the oxidative desulfurization reaction over TiF4-PU catalyst.

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Oxidative desulfurization of diesel fuel with caprolactam-based acidic deep eutectic solvents: Tailoring the reactivity of DESs by adjusting the composition

Cited by 63 publications

References 53 publications

Removal of Dibenzothiophene from Diesels by Extraction and Catalytic Oxidation with Acetamide‐Based Deep Eutectic Solvents

Removal of Dibenzothiophene from Diesels by Extraction and Catalytic Oxidation with Acetamide‐Based Deep Eutectic Solvents

Improved Desulfurization Performance of Polyethyleneglycol Membrane by Incorporating Metal Organic Framework CuBTC

Synergistic Effect between Zr-MOF and Phosphomolybdic Acid with the Promotion of TiF4 Template

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