Oxidative desulfurization and denitrogenation of fuels using metal-organic framework-based/-derived catalysts

Bhadra, Biswa Nath; Jhung, Sung Hwa

doi:10.1016/j.apcatb.2019.118021

Cited by 189 publications

(82 citation statements)

References 179 publications

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“…It is commonly accepted that catalytic ODS using peroxides as oxidants involves either the formation of active radicals or metal‐peroxo species through homolytic or heterolytic cleavage of the oxidant, respectively. On the other hand, MOF‐catalyzed ODS reactions with molecular oxygen generally follow the free radical chain auto‐oxidation mechanism …”

Section: Mof Catalysts For Odsmentioning

confidence: 99%

Metal‐Organic Framework‐Based Catalysts for Oxidative Desulfurization

et al. 2020

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Oxidative desulfurization (ODS) is emerging as the most promising methodology to remove refractive naturally occurring sulfides from fossil fuels. Metal‐organic frameworks (MOFs), a fascinating class of materials, are suitable as catalysts for this process due to the theoretical infinite number of combinations of polynuclear metal clusters and organic linkers. A rational fine‐tuning of the material structure, porosity and chemical functionality have given rise to a considerable number of MOF‐based catalytic active materials. Furthermore, MOFs can act as host, with programmable cavity sizes to accommodate catalytic species, forming novel robust catalytic MOF composite materials. Herein an account of this growing field of heterogeneous catalysis is reported and discussed, aiming to point out future outlooks and perspectives.

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Section: Mof Catalysts For Odsmentioning

confidence: 99%

Metal‐Organic Framework‐Based Catalysts for Oxidative Desulfurization

et al. 2020

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“…Oxidative desulfurization (ODS) as one of the non‐HDS techniques may be useful for producing clean fuels in limited special situations where it is not necessary to remove nitrogen, oxygen or metal impurities and it is not needed to hydrogenate aromatics and olefins . For this, many research works were focused on the development of active heterogeneous catalysts for ODS of fuel oil .…”

Section: Introductionmentioning

confidence: 99%

“…[4] Oxidative desulfurization (ODS) as one of the non-HDS techniques may be useful for producing clean fuels in limited special situations where it is not necessary to remove nitrogen, oxygen or metal impurities and it is not needed to hydrogenate aromatics and olefins. [5][6][7] For this, many research works were focused on the development of active heterogeneous catalysts for ODS of fuel oil. [8][9][10] There into, metal-organic frameworks (MOFs) as heterogeneous ODS catalysts have been attempted in this field due to their advantages such as diverse pore size, large surface area and rich metal sites.…”

Section: Introductionmentioning

confidence: 99%

Creation of Active Sites in MOF‐808(Zr) by a Facile Route for Oxidative Desulfurization of Model Diesel Oil

et al. 2020

ChemistrySelect

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MOF‐808(Zr) as an important member of metal‐organic frameworks (MOFs) has attracted much attention due to its good stability, large surface area and rich zirconium metal centers. However, Zr sites in the structure of MOF‐808(Zr) are inactive in many catalytic reactions due to they are well coordinated with organic ligands like 1,3,5‐benzenetricarboxylic acid (BTC) and formate anions. Thus, removing formate anions have been attempted to create more active sites in the structure for many reactions while maintaining the structural stability. In this work, we report that the formate ligands in MOF‐808(Zr) can be facilely removed by the treatment in hot ethanol for 4 h. The obtained material as a heterogeneous catalyst exhibited superior catalytic activity in the oxidative desulfurization (ODS) reaction of dibenzothiophene (DBT) compared with reported MOFs catalysts. The conversion of DBT in model diesel oil could reach >99 % within a reaction time of 20 min at 323 K, which is five times as that over parent MOF‐808(Zr). As a result, the sulfur content was decreased from 1000 ppm to less than 10 ppm. Such catalytic performance should be mainly attributed to the creation of more active sites in the structure of MOF‐808(Zr) after the removal of formate anions.

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“…Calcination temperature and time influence the phase composition, distribution status, particle sizes, and surface areas of MOF-derived oxides [20,21]. The highly tunable properties of MOF-derived metal oxides along with the possibilities to combine them with highly reactive titania make them attractive candidates for highly efficient ODS catalysts [22]. Jongsik Kim and his coworkers [23] conducted works on IRMOF-3-derived Ti/NC catalysts by modifying Ti precursors on the amine groups in MOFs.…”

Section: Introductionmentioning

confidence: 99%

Titanium-Modified MIL-101(Cr) Derived Titanium-Chromium-Oxide as Highly Efficient Oxidative Desulfurization Catalyst

Zhang

Sun

2020

Catalysts

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A titanium-chromium-oxide catalyst was prepared by a facile calcination of titanium-modified MIL-101(Cr). The resulting material, possessing a surface area of 60 m2 g−1 and a titania content of 50.0 wt%, can be directly used as the catalyst for oxidative desulfurization (ODS) reaction of dibenzothiophene (DBT). This novel ODS catalyst can remove 900 ppm sulfur-containing compounds in a reaction time of 30 min at 60 °C. The experimental results showed that the specific activity increased with the titanium content. The specific activity of the catalyst with 50%Ti reached 129 μmol/m2, which was much higher than that of reported Ti-based catalysts.

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Oxidative desulfurization and denitrogenation of fuels using metal-organic framework-based/-derived catalysts

Cited by 189 publications

References 179 publications

Metal‐Organic Framework‐Based Catalysts for Oxidative Desulfurization

Metal‐Organic Framework‐Based Catalysts for Oxidative Desulfurization

Creation of Active Sites in MOF‐808(Zr) by a Facile Route for Oxidative Desulfurization of Model Diesel Oil

Titanium-Modified MIL-101(Cr) Derived Titanium-Chromium-Oxide as Highly Efficient Oxidative Desulfurization Catalyst

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