Tuning the electrophilicity of vanadium-substituted polyoxometalate based ionic liquids for high-efficiency aerobic oxidative desulfurization

Zhang, Ming; Liu, Jiaqi; Li, Hongping; Wei, Yanchen; Fu, Yujie; Liao, Wanying; Zhu, Linhua; Chen, Guang‐Ying; Zhu, Wenshuai

doi:10.1016/j.apcatb.2020.118936

Cited by 136 publications

(52 citation statements)

References 58 publications

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“…and the reduction peak of the sample CTAB@ HPA-5 centered at − 0.80 V has a higher positive potential, which is higher than that of CTAB@HPA-x (x = 1-4) and CTAB@HPA-6 ( − 0.84 V). It reveals that CTAB@HPA-5 with better electrophilicity has better CODS performance, which is in well agreement with previous studies (Zhang et al 2020;Ding et al 2015;Wu et al 2016 Fig. 4 XPS of HPA-5 and CTAB@HPA-5: a survey; b V 2p; c P 2p and d W 4f; peak deconvolutions for e W 4f; f V 2p of CTAB@HPA-5 The effect of reaction temperature on the desulfurization performance of the representative CTAB@HPA-5 was further investigated.…”

Section: Catalytic Oxidative Desulfurization Performancesupporting

confidence: 89%

“…Therefore, phosphotungstic acid has received much more attention because of their acidic and redox properties and environmental-friendly trait (Banisharif et al 2017). According to the molecular cluster, HPA can be classified into Keggin type (Zhang et al 2020), Dawson type (Long et al 2010) and Anderson type (Chi et al 2020;Zhang et al 2017) et al Te et al (Te et al 2001 have highlighted that heteropolyacids with Keggin structure can effectively activate hydrogen peroxide and oxidize dibenzothiophene to form corresponding sulfone species. Muñoz (Muñoz et al 2017) found that molybdenum heteropolyacids with Anderson structure exhibit impressive catalytic activity for the abatement of p-phenylene sulfide.…”

Section: Introductionmentioning

confidence: 99%

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Insight into the oxidative desulfurization of high-sulfur petroleum coke under mild conditions: a journey of vanadium-substituted Dawson-type phosphotungstic acid

Hua

Wei

et al. 2021

Pet. Sci.

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High-sulfur petroleum coke (HSPC), that is a by-product from slag oil in the coking process of refining, shows versatility values in practical applications and, however, concentrates the majority of organic sulfur. Herein, we design and construct a highly effective CTAB@HPA composites to be explored for the catalytic oxidative desulfurization of HSPC under mild conditions using hydrogen peroxide as the oxidant and 1-butyl-3-methylimidazole tetrafluoroborate ionic liquid as the extractant. The results demonstrate that the sulfur content of HSPC could be strikingly reduced from 4.46 wt% to 2.48 wt% under 60 °C and atmospheric pressure, and that the organic sulfur in HSPC is mainly oxidized to sulfoxide, sulfone and sulfate, which latter can be directly separated from petroleum coke. Moreover, the effect of reaction conditions on the desulfurization performance of HSPC as well as the catalytic oxidation reaction kinetic of HSPC desulfurization was systematically investigated. Furthermore, a mechanism for the oxidative desulfurization of HSPC over CTAB@HPA catalysts was proposed. Therefore, this work provides new insight into how to construct active catalysts for the desulfurization of HSPC under mild conditions.

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Section: Catalytic Oxidative Desulfurization Performancesupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Insight into the oxidative desulfurization of high-sulfur petroleum coke under mild conditions: a journey of vanadium-substituted Dawson-type phosphotungstic acid

Hua

Wei

et al. 2021

Pet. Sci.

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“…The heavy oil is further upgraded in the fluid catalytic cracking unit to produce high‐quality fuel products, such as diesel. However, if these organic sulfides are not treated, the sulfur can be retained into the diesel product, eventually causing acid rain and smog 4‐6 . Thus, it is of great importance to upgrading the feed to clean fuel products 7,8 .…”

Section: Introductionmentioning

confidence: 99%

High‐performance adsorptive desulfurization by ternary hybrid boron carbon nitride aerogel

et al. 2021

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Separation of aromatic organosulfur compounds is vital for upgrading the feed to clean fuel products, however, it remains a formidable challenge for the present adsorbents. Herein, a series of novel aerogel‐like boron carbon nitride (BCN) with three‐dimensional interconnected porous networks were fabricated via a hydrogel template and freeze‐casting strategy. The as‐prepared aerogel‐like BCN had a variable carbon content and a flexible size of graphene domain on its porous structure. The optimal BCN aerogel represents the top‐level of adsorptive desulfurization (ADS) capacity for aromatic organosulfur compounds (30.8 mg S/g adsorbent), strikingly higher than the state‐of‐the‐art aerogels adsorbents (17.1 mg S/g adsorbent) reported under similar conditions. A selective adsorption for dibenzothiophene in the presence of aromatic hydrocarbons, nitrogen compounds were also achieved on BCN aerogel. The adsorption isotherm and XPS measurement reveal heterogeneous adsorption on the BCN aerogel via π–π and Lewis acid–base interactions.

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“…Furthermore, organic sulfur in diesel fuel causes serious corrosion in transportation pipelines and deactivation of the catalysts used in the downstream processes, as well as reducing combustion efficiency and increasing emission of particulates [6][7][8][9][10]. For the above-mentioned reasons, thorough desulfurization of diesel fuel is attracting more and more attention worldwide to produce green diesel fuel meeting the stringent global environmental regulations on transportation fuels [11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Batch Oxidative Desulfurization of Model Light Gasoil over a Bimetallic Nanocatalyst

et al. 2021

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A novel AgO/ZnO/HY‐zeolite bimetallic nanocatalyst was designed and synthesized by an impregnation method. The purpose of this nanocatalyst was to remove dibenzothiophene as the primary sulfur content from a model light gasoil in a catalytic oxidative desulfurization (ODS) process. The characteristics of the synthesized nanocatalyst were determined by Fourier transform IR spectroscopy, Brunauer‐Emmett‐Teller analysis, scanning electron microscopy, and X‐ray diffraction. The ODS study revealed high sulfur conversion under optimal ODS reaction conditions and very good reusability of the catalyst after recycling five times.

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Tuning the electrophilicity of vanadium-substituted polyoxometalate based ionic liquids for high-efficiency aerobic oxidative desulfurization

Cited by 136 publications

References 58 publications

Insight into the oxidative desulfurization of high-sulfur petroleum coke under mild conditions: a journey of vanadium-substituted Dawson-type phosphotungstic acid

Insight into the oxidative desulfurization of high-sulfur petroleum coke under mild conditions: a journey of vanadium-substituted Dawson-type phosphotungstic acid

High‐performance adsorptive desulfurization by ternary hybrid boron carbon nitride aerogel

Batch Oxidative Desulfurization of Model Light Gasoil over a Bimetallic Nanocatalyst

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