Hydrodesulfurization of sulfur-containing polyaromatic compounds in light oil

Kabe, Toshiaki; Ishihara, Atsushi; Tajima, Haruhiko

doi:10.1021/ie00006a023

Cited by 271 publications

(130 citation statements)

References 15 publications

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“…The condensed thiophenes are the most common forms in which sulfur is present (28). Alkyl DBTs and alkyl BTs are highly recalcitrant to chemical catalysts, especially when alkylated at the 4 and 6 positions (9,14,20). Many research efforts have been put into the investigation of biological desulfurization systems using DBTs or alkylated DBTs as model compounds, and the metabolic pathway of desulfurization has been proposed as the so-called "4S" or extended "4SM" pathway (5,7,12,16,18).…”

mentioning

confidence: 99%

Deep Desulfurization of Diesel Oil and Crude Oils by a Newly Isolated Rhodococcus erythropolis Strain

Shi

et al. 2006

Appl Environ Microbiol

131

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The soil-isolated strain XP was identified as Rhodococcus erythropolis. R. erythropolis XP could efficiently desulfurize benzonaphthothiophene, a complicated model sulfur compound that exists in crude oil. The desulfurization product of benzonaphthothiophene was identified as ␣-hydroxy-␤-phenyl-naphthalene. Resting cells could desulfurize diesel oil (total organic sulfur, 259 ppm) after hydrodesulfurization. The sulfur content of diesel oil was reduced by 94.5% by using the resting cell biocatalyst for 24 h at 30°C. Biodesulfurization of crude oils was also investigated. After 72 h of treatment at 30°C, 62.3% of the total sulfur content in Fushun crude oil (initial total sulfur content, 3,210 ppm) and 47.2% of that in Sudanese crude oil (initial total sulfur, 1,237 ppm) were removed. Gas chromatography with pulsed-flame photometric detector analysis was used to evaluate the effect of R. erythropolis XP treatment on the sulfur content in Fushun crude oil, and it was shown that most organic sulfur compounds were eliminated after biodesulfurization.

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mentioning

confidence: 99%

Deep Desulfurization of Diesel Oil and Crude Oils by a Newly Isolated Rhodococcus erythropolis Strain

Shi

et al. 2006

Appl Environ Microbiol

131

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“…Figure 9 shows GC-FPD chro matograms of the oil layers before and after oxidation. Most sulfur-containing compounds present in SR-LGO are alkyl-substituted BTs and alkyl-substituted DBTs 70) . The GC peaks of sulfur compounds in oil layers of oxidized samples were shifted in the heavier molecular weight direction, indicating formation of the corre sponding sulfones, as shown in Fig.…”

Section: Oxidation Of Straight Run Light Gas Oil Withmentioning

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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“…First, we found that during preparation the textural and physical properties of the sol-gel Al 2 O 3 4 powders can be finely tuned by changing the ratio of hydrolysis (R), defined as [H 2 O]/[aluminum-tri-sec-butoxide (ASB)] [29]. Then, we showed that the HDS performance of CoMo catalysts supported on sol-gel prepared Al 2 O 3 powders depend on R. The catalytic activities were maximal for R = 8 ~ 10 and superior to that of an industrial reference catalyst (IRC) for HDS of thiophene and dibenzothiophene (DBT), whereas inferior to the IRC for HDS of 4,6-dimethyldibenzothiophene (4,6-DMDBT) [31], which is well known as one of the most HDS-refractory compounds present in diesel oil fractions [32,33]. That particular study also showed that HDS of 4,6-DMDBT requires the hydrogenation (HYD) of 4H-4,6-DMDBT to 6H-4,6-DMDBT, which is promoted over catalysts with R = 8 ~ 10 that exhibit the largest proportion of strong acid sites relative to the total quantity of acid sites [31].…”

Section: Al 2 O 3 Based Supports and Enhancement Of The Catalytic Funmentioning

confidence: 99%

Characterization and hydrodesulfurization activity of CoMo catalysts supported on boron-doped sol–gel alumina

Dumeignil

Sato

Imamura

et al. 2006

Applied Catalysis A: General

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Hydrodesulfurization of sulfur-containing polyaromatic compounds in light oil

Cited by 271 publications

References 15 publications

Deep Desulfurization of Diesel Oil and Crude Oils by a Newly Isolated Rhodococcus erythropolis Strain

Deep Desulfurization of Diesel Oil and Crude Oils by a Newly Isolated Rhodococcus erythropolis Strain

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

Characterization and hydrodesulfurization activity of CoMo catalysts supported on boron-doped sol–gel alumina

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