Boron-doped activated carbon as efficient and selective adsorbent for ultra-deep desulfurization of 4,6-dimethyldibenzothiophene

Ganiyu, Saheed A.; Ajumobi, Oluwole; Lateef, Saheed A.; Sulaiman, Kazeem O.; Bakare, Idris A.; Qamaruddin, Muhammad; Alhooshani, Khalid

doi:10.1016/j.cej.2017.03.132

Cited by 52 publications

(24 citation statements)

References 40 publications

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“…The phenolic and carboxylic acidic sites in the adsorbents were found to increase as the base C is modified and conversely, the lactonic group were observed to decrease as the base C is modified. This demonstrated that the modification of C by melamine and subsequent loading of Ni enhanced both its surface acidic sites and basic sites, and hence it is probable that the efficiency of adsorption of refractive sulfur compounds would increase due to the modification as was observed by Ganiyu et al [24]…”

Section: Surface Area and Porositysupporting

confidence: 54%

“…[23] Overall, the regeneration performance of this sorbent is good and comparable with the previous reported studies. [23,24]…”

Section: Regeneration Of Ninps-cn Adsorbentmentioning

confidence: 99%

“…[21,22] Furthermore, the efficiency of ordinary carbons needs to be improved for practical purposes and for growing demands of sulfur below 10 ppm-S. For example, deep desulfurization of transportation fuels has been achieved by highly porous carbon modified with metals or metal-oxide. [23,24] The adsorption capacity of carbon adsorbents is further improved by modification with metal(s) through pi-complexation between the metal and sulfur, in addition to electrostatic interactions with pores of the carbon. [25,26] Nitrogen-doped carbon modified with nanoparticles will provide a good adsorbent with better adsorption efficiency, compared to carbon or metal-modified carbon due to improved textural and structural properties besides the surface chemistry.…”

Section: Introductionmentioning

confidence: 99%

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Hierarchical Porous Nitrogen‐Doped Carbon Modified with Nickel Nanoparticles for Selective Ultradeep Desulfurization

et al. 2020

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We report herewith, a biomass derived carbon from groundnut shell (GN‐AC) treated with melamine to achieve nitrogen‐doped carbon (CN), followed by modification with nickel‐precursor by solid‐state impregnation to achieve reticulated nickel nanoparticles‐modified nitrogen‐doped carbon (Ni‐CN) adsorbent. Incorporation of heteroatoms and the subsequent loading of nickel nanoparticles on the porous carbon exhibits fast and remarkable adsorption capacity for dibenzothiophene. The sulfur removal efficiencies of CN and Ni‐CN are 40.49 and 44.77 mg‐S/g‐adsorbent, respectively, compared to 29.63 mg‐S/g achieved for bare carbon in 500 ppmw‐S. This excellent performance is attributed to synergy effect of nitrogen heteroatoms and nickel nanoparticles with improved surface chemistry and textural properties. The physical‐chemical properties of the adsorbents were characterized by Boehm titration, N2‐physisorption, FTIR, XRD, XPS, Raman, SEM and TEM. The kinetics and isotherms investigation of the adsorbents data fitted pseudo‐first order and Langmuir models, respectively. The Ni‐CN adsorbent also displays an excellent selectivity and regeneration potential for commercial viability.

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Section: Surface Area and Porositysupporting

confidence: 54%

“…[23] Overall, the regeneration performance of this sorbent is good and comparable with the previous reported studies. [23,24]…”

Section: Regeneration Of Ninps-cn Adsorbentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hierarchical Porous Nitrogen‐Doped Carbon Modified with Nickel Nanoparticles for Selective Ultradeep Desulfurization

et al. 2020

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“…The alternative processes such as adsorption and oxidative desulfurization and denitrogenation has been of interest to achieve ultra-low sulphur level in oil because of very mild operating conditions and no usage of hydrogen. Various adsorbents including activated carbon, ionic resins, metal organic frameworks, metal oxides and zeolites have been used to adsorb sulphur containing compounds from diesel oil [3][4][5][6][7][8][9][10]. Ganiyu et al [6] utilized activated carbon doped with 1.0 wt.% boron to selectively adsorb 4,6-DMDBT from model fuel.…”

Section: Introductionmentioning

confidence: 99%

“…Various adsorbents including activated carbon, ionic resins, metal organic frameworks, metal oxides and zeolites have been used to adsorb sulphur containing compounds from diesel oil [3][4][5][6][7][8][9][10]. Ganiyu et al [6] utilized activated carbon doped with 1.0 wt.% boron to selectively adsorb 4,6-DMDBT from model fuel. Srivastav and Srivastava [7] carried out the adsorption of DBT dissolved in hexanes on commercial grade activated alumina and Li et al [4] presented a study on the challenges associated with removal of aromatic sulphur compounds using metal-organic frameworks.…”

Section: Introductionmentioning

confidence: 99%

Hydrotreatment Followed by Oxidative Desulfurization and Denitrogenation to Attain Low Sulphur and Nitrogen Bitumen Derived Gas Oils

et al. 2018

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To lower the sulphur content below 500 ppm and to increase the quality of bitumen derived heavy oil, a combination of hydrotreating followed by oxidative desulfurization (ODS) and oxidative denitrogenation (ODN) is proposed in this work. NiMo/γ-Al2O3 catalyst was synthesized and used to hydrotreat heavy gas oil (HGO) and light gas oil (LGO) at typical operating conditions of 370–390 °C, 9 MPa, 1–1.5 h−1 space velocity and 600:1 H2 to oil ratio. γ-Alumina and alumina-titania supported Mo, P, Mn and W catalysts were synthesized and characterized using X-ray diffractions, N2 adsorption-desorption using Brunauer–Emmett–Teller (BET) method, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR). All catalysts were tested for the oxidation of sulphur and nitrogen aromatic compounds present in LGO and HGO using tert-butyl hydroperoxide (TBHP) as oxidant. The oxidized sulphur and nitrogen compounds were extracted using adsorption on activated carbon and liquid-liquid extraction using methanol. The determination of oxidation states of each metal using XPS confirmed the structure of metal oxides in the catalyst. Thus, the catalytic activity determined in terms of sulphur and nitrogen removal is related to their physico-chemical properties. In agreement with literature, a simplistic mechanism for the oxidative desulfurization is also presented. Mo was found to be more active in comparison to W. Presence of Ti in the support has shown 8–12% increase in ODS and ODN. The MnPMo/γ-Al2O3-TiO2 catalyst showed the best activity for sulphur and nitrogen removal. The role of Mn and P as promoters to molybdenum was also discussed. Further three-stage ODS and ODN was performed to achieve less than 500 ppm in HGO and LGO. The combination of hydrotreatment, ODS and ODN has resulted in removal of 98.8 wt.% sulphur and 94.7 wt.% nitrogen from HGO and removal of 98.5 wt.% sulphur and 97.8 wt.% nitrogen from LGO.

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Desulfurization Technologies

2018

Biodesulfurization in Petroleum Refining

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Boron-doped activated carbon as efficient and selective adsorbent for ultra-deep desulfurization of 4,6-dimethyldibenzothiophene

Cited by 52 publications

References 40 publications

Hierarchical Porous Nitrogen‐Doped Carbon Modified with Nickel Nanoparticles for Selective Ultradeep Desulfurization

Hierarchical Porous Nitrogen‐Doped Carbon Modified with Nickel Nanoparticles for Selective Ultradeep Desulfurization

Hydrotreatment Followed by Oxidative Desulfurization and Denitrogenation to Attain Low Sulphur and Nitrogen Bitumen Derived Gas Oils

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