Oxidative desulfurization and denitrogenation of a light gas oil using an oxidation/adsorption continuous flow process

Ishihara, Atsushi; Wang, Danhong; Dumeignil, Franck; Amano, Hiroshi; Qian, Eika W.; Kabe, Toshiaki

doi:10.1016/j.apcata.2004.10.037

Cited by 285 publications

(167 citation statements)

References 42 publications

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“…Initially first order kinetics was applied, and ln(C o /C t ) was plotted against the time (t), which gave linear plot for all the model compounds. The first order kinetics plots for thiophene, DBT and 4,6-DMDBT are displayed as Figures 3-5, showing that their ODS follow first order kinetics, which is in well agreement published literature [27]. The rate constants for oxidation of model compounds were calculated for 25˚C, 40˚C and 60˚C, the data is displayed in Table 3.…”

Section: Reactivity Of Sulfur Compoundssupporting

confidence: 58%

Desulphurization of Transportation Fuels by Per-Formic Acid Oxidant Using MoOx Loaded on ZSM-5 Catalyst

Peshawar¹,

Pakistan²

2017

JPEE

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Desulphurization of model and real oil samples was investigated using performic acid as oxidant assisted by air as co-oxidant. The catalysts used were Mo-oxide supported on ZSM-5 zeolite, which was synthesized in the laboratory and characterized by FT-IR, XRD, SEM and SSA analysis. In case of model oil, the optimum condition determined for complete oxidation of all the model compounds including thiophene, DBT and 4,6-DMDBT were; 60˚C, 60 min, ambient pressure and air flow rate of 100 mL/min. The oxidation reactivity decreased from 4,6-DMDBT to DBT and thiophene, which was found to follow pseudo first order kinetics. The real oil sample used in the study included untreated naphtha (NP), light gas oil (LGO), heavy gas oil (HGO) and Athabasca bitumen (Bit.). In case of NP and LGO the sulfur removal of above 78% was attained whereas in case of HGO and Bit. samples about 60% of desulfurization was achieved.

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Section: Reactivity Of Sulfur Compoundssupporting

confidence: 58%

Desulphurization of Transportation Fuels by Per-Formic Acid Oxidant Using MoOx Loaded on ZSM-5 Catalyst

Peshawar¹,

Pakistan²

2017

JPEE

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“…In general the bottlenecks encountered in batch processes require for scaling up the development of automated flow processes by means of fixed-bed flow-reactors [14], microreactors [15] or flow sonochemical reactors [16] followed by simple extraction to remove the oxidized material and residual reagents. …”

Section: Introductionmentioning

confidence: 99%

Efficient H2O2/CH3COOH oxidative desulfurization/denitrification of liquid fuels in sonochemical flow-reactors

Gaudino

Carnaroglio

Boffa

et al. 2014

Ultrasonics Sonochemistry

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The oxidative desulfurization/denitrification of liquid fuels has been widely investigated as an alternative or complement to common catalytic hydrorefining. In this process, all oxidation reactions occur in the heterogeneous phase (the oil and the polar phase containing the oxidant) and therefore the optimization of mass and heat transfer is of crucial importance to enhancing the oxidation rate. This goal can be achieved by performing the reaction in suitable ultrasound (US) reactors. In fact, flow and loop US reactors stand out above classic batch US reactors thanks to their greater efficiency and flexibility as well as lower energy consumption. This paper describes an efficient sonochemical oxidation with H2O2/CH3COOH at flow rates ranging from 60 to 800 mL/min of both a model compound, dibenzotiophene (DBT), and of a mild hydro-treated diesel feedstock. Four different commercially available US loop reactors (single and multi-probe) were tested, two of which were developed in the authors' laboratory. Full DBT oxidation and efficient diesel feedstock desulfurization/denitrification were observed after the separation of the polar oxidized S/N-containing compounds (S ≤ 5 ppm, N ≤ 1 ppm). Our studies confirm that high-throughput US applications benefit greatly from flow-reactors.

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“…The total amount Symbol: ◇ no addition, • n-pentadecane, ▲ xylene, ■ LGO, ○ diisobutylene, △ indole. of nitrogen dissolved in decalin was about 20 ppm for each nitrogen compound but about 13.5 ppm in the LGO 38) . As a result, the denitrogenation activity of the nitrogen compounds decreased in the order of indole＞ quinoline＞acridine＞carbazole, showing that carba zole is the nitrogen compound that is most difficult to oxidize.…”

Section: Selectivity Of Oxidation and Oxidation Of Nitrogen-contaimentioning

confidence: 99%

Development of Novel Nonhydrogenation Desulfurization Process — Oxidative Desulfurization of Distillate —

Qian

2008

J. Jpn. Petrol. Inst.

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This selective review discusses nonhydrogenation desulfurization processes, particularly oxidative desulfuriza tion, for the manufacture of ultra clean fuels. The environmental regulations for transportation fuels are becom ing more and more severe, and the statutory sulfur content in various fuels was reduced to below 10 ppm in 2005, and will be lower in the near future. However, there is considerable doubt whether conventional hydrodesulfur ization processes can provide fuels with sulfur content less than 5 ppm. This review describes recent advances in nonhydrogenation desulfurization processes, particularly oxidative desulfurization, as well as our latest research results. The review consists of three sections as follows. (I) The oxidation reactivities of various sulfurcontaining compounds present in fuels, oxidation and oxidative mechanisms for various oxidant-catalyst systems are introduced. (II) The oxidation of various practical fuels such as light gas oil, kerosene, and vacuum gas oil, and others are described; and the potential of various oxidative desulfurization processes for the fuels are evaluated. (III) Removal methods of oxidized sulfur compounds in various fuels are described.

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Oxidative desulfurization and denitrogenation of a light gas oil using an oxidation/adsorption continuous flow process

Cited by 285 publications

References 42 publications

Desulphurization of Transportation Fuels by Per-Formic Acid Oxidant Using MoOx Loaded on ZSM-5 Catalyst

Desulphurization of Transportation Fuels by Per-Formic Acid Oxidant Using MoOx Loaded on ZSM-5 Catalyst

Efficient H2O2/CH3COOH oxidative desulfurization/denitrification of liquid fuels in sonochemical flow-reactors

Development of Novel Nonhydrogenation Desulfurization Process — Oxidative Desulfurization of Distillate —

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