Acidic polymeric ionic liquids based reduced graphene oxide: An efficient and rewriteable catalyst for oxidative desulfurization

Zhang, Hairan; Zhang, Qian; Zhang, Ling; Pei, Tingting; Dong, Li Min; Zhou, Pengyu; Li, Chaoqi; Xia, Lixin

doi:10.1016/j.cej.2017.10.042

Cited by 70 publications

(14 citation statements)

References 56 publications

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“…As listed in Table S5 (Supporting Information), compared with those HPW-based catalysts loading on the other porous supports, such as inorganic SiO 2 , − Al 2 O 3 , TiO 2 , , MOFs, G-h-BN, , and r-GO, the special structure of HPW(50)/P[tVPB-VP 1 ] provided a large BET surface area of 234 m 2 /g and favorable channels for DBT and H 2 O 2 molecules transferring to catalytic active sites. More importantly, the existing pyridine rings and abundant benzene rings in the network of P[tVPB-VP 1 ] and HPW particles provided a synergistic affinity with DBT through π–π interaction, π-complex, and S–M binding.…”

Section: Resultsmentioning

confidence: 99%

Catalyst, Emulsion Stabilizer, and Adsorbent: Three Roles In One for Synergistically Enhancing Interfacial Catalytic Oxidative Desulfurization

Xia

Zhao

et al. 2019

Langmuir

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A Pickering emulsion catalytic system was proposed to reduce the transfer limitation between two immiscible reactant phases for enhancing the kinetics of heterogenetic oxidative desulfurization (ODS). By loading phosphotungstic acid (HPW) nanoparticles on a novel pyridine-based porous organic polymer of P[tVPB-VP x ], the amphiphilic catalysts were produced and used as the stabilizer for Pickering emulsions. Specifically, an ultrafast ODS rate was realized in the HPW/P[tVPB-VP 1 ]-stabilized Pickering emulsion catalytic system, and just within 15 min, 100 ppm dibenzothiophene (DBT) was completely oxidized by H 2 O 2 . Because the obtained hierarchical porous HPW/P[tVPB-VP x ] catalysts showed both high adsorption capacity of DBT and excellent catalytic ODS performance, the catalysts assembling at the interface of emulsions provided this fastest reaction dynamics. Playing three roles of catalyst, emulsion stabilizer, and adsorbent, the synergistic functional catalytic emulsions can be a promising approach to significantly boost the heterogeneous catalytic ODS performance.

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Section: Resultsmentioning

confidence: 99%

Catalyst, Emulsion Stabilizer, and Adsorbent: Three Roles In One for Synergistically Enhancing Interfacial Catalytic Oxidative Desulfurization

Xia

Zhao

et al. 2019

Langmuir

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“…[190,191] PILs supported with 2D graphene materials prodive great sulfur removal efficiency because of synergistic effect. [192] Zhang and coauthors [193] synthesized poly(1vinyl3ethyl imidazolium bromide)reduced graphene oxide (denoted as poly[ViEtIm]BrrGO) with Bronsted acids etc. The system of poly [ViEtIm][PW12O40] rGO helps to achieve 100 % sulfur convertion at relatively low temperature (60 o C).…”

Section: Ionic Liquids Assisted Oxidative Desulfurization (Ods) Extramentioning

confidence: 99%

Ionic liquids assisted desulfurization and denitrogenation of fuels

Zolotareva

Zazybin

Rafikova

et al. 2019

Vietnam Journal of Chemistry

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“…Selection of extractant is nonetheless challenging since some of the conventional solvents are highly flammable and volatile [19][20][21]. Therefore, ionic liquids (ILs), which are composed of cationic and anionic salts, have been introduced as green solvent since it has extremely low vapor pressure, customizable polarity, minimum flammability, and substantial stability for various applications [22][23][24][25]. By using ILs in EODS, the performance of desulfurization could be greatly improved [20,26,27].…”

Section: Introductionmentioning

confidence: 99%

Liquid Polymer Eutectic Mixture for Integrated Extractive-Oxidative Desulfurization of Fuel Oil: An Optimization Study via Response Surface Methodology

et al. 2020

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Hydrodesulfurization (HDS) has been commercially employed for the production of ultra-low sulfur fuel oil. However, HDS is unable to remove sterically hindered sulfur-containing compounds such as dibenzothiophene (DBT) and benzothiophene (BT). An alternative way to remove sulfur is via extractive desulfurization system (EDS) using deep eutectic solvents (DES) as sustainable extractant. In this work, liquid polymer DES was synthesized using tetrabutylammonium chloride (TBAC) and poly(ethylene glycol) 400 (PEG) with different molar ratios. Response surface methodology (RSM) was applied to study the effect of independent variables toward extraction efficiency (EE). Three significant operating parameters, temperature (25–70 °C), DES molar ratio (1–3), and DES volume ratio (0.2–2.0), were varied to study the EE of sulfur from model oil. A quadratic model was selected based on the fit summary test, revealing that the extraction efficiency was greatly influenced by the amount of DES used, followed by the extraction temperature and PEG ratio. Although molar ratio of DES was less sensitive towards EDS performance, the EE was much higher at lower PEG ratio. For the realization of an energy-efficient EDS system, optimization of EDS parameters and EE was carried out via a desirability tool. At 25 °C, 1:1 molar ratio of TBAC to PEG, and DES-to-model-oil-volume ratio of 1, removal of DBT reached as high as 79.01%. The present findings could provide valuable insight into the development of practicable EDS technology as a substitute to previous HDS process.

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Acidic polymeric ionic liquids based reduced graphene oxide: An efficient and rewriteable catalyst for oxidative desulfurization

Cited by 70 publications

References 56 publications

Catalyst, Emulsion Stabilizer, and Adsorbent: Three Roles In One for Synergistically Enhancing Interfacial Catalytic Oxidative Desulfurization

Catalyst, Emulsion Stabilizer, and Adsorbent: Three Roles In One for Synergistically Enhancing Interfacial Catalytic Oxidative Desulfurization

Ionic liquids assisted desulfurization and denitrogenation of fuels

Liquid Polymer Eutectic Mixture for Integrated Extractive-Oxidative Desulfurization of Fuel Oil: An Optimization Study via Response Surface Methodology

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