Search engine: Openj-gate

"Drawing on my fine command of the English language, I said nothing" -- Robert Benchley

The Web is repository for an enormous number of desulfurization related documents. Much of the most useful content, however, resides behind fee based portals like ScienceDirect and Ebsco Academic, to name two.

Openj-gate (www.openj-gate.com ) is an exception to this …

Try it out by searching for "dibenzothiophene." Using the advanced search feature, you can restrict the results to a date range, such as 2009-2010.

The results of the search appear below. In each case, a free full text version of the cited article is available for download.

Openj-gate is not a huge repository, and many of the articles are written in languages other than English, which can be a problem for those of us with limited language skills. But it is worth bookmarking for occasional use to supplement your searches in other databases.

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Degradation of Benzo [a] Pyrene by a novel strain Bacillus subtilis BMT4i (MTCC 9447)
Author(s) : Lily, Madhuri Kaushish; Bahuguna, Ashutosh; Dangwal, Koushalya; Garg, Veena;
Source : Brazilian Journal of Microbiology ; Vol.40 No.4 Dec 2009 [Page 884-892]
Keyword(s) : Benzo [a] Pyrene (BaP); polycyclic aromatic hydrocarbon (PAH); Bacillus subtilis BMT4i; colony forming units/ml (CFU/ml); high performance liquid chromatography (HPLC).;
Abstract : Benzo [a] Pyrene (BaP) is a highly recalcitrant, polycyclic aromatic hydrocarbon (PAH) with high genotoxicity and carcinogenicity. It is formed and released into the environment due to incomplete combustion of fossil fuel and various anthropogenic activities including cigarette smoke and automobile exhausts. The aim of present study is to isolate bacteria which can degrade BaP as a sole source of carbon and energy. We have isolated a novel strain BMT4i (MTCC 9447) of Bacillus subtilis from automobile contaminated soil using BaP (50 µg /ml) as the sole source of carbon and energy in basal salt mineral (BSM) medium. The growth kinetics of BMT4i was studied using CFU method which revealed that BMT4i is able to survive in BaP-BSM medium up to 40 days attaining its peak growth (1029 fold increase in cell number) on 7 days of incubation. The BaP degradation kinetics of BMT4i was studied using High Performance Liquid Chromatography (HPLC) analysis of BaP biodegradation products. BMT4i started degrading BaP after 24 hours and continued up to 28 days achieving maximum degradation of approximately 84.66 %. The above findings inferred that BMT4i is a very efficient degrader of BaP. To our best of knowledge, this is the first report showing utilization of BaP as a sole source of carbon and energy by bacteria. In addition, BMT4i can degrade a wide range of PAHs including naphthalene, anthracene, and dibenzothiophene therefore, it could serve as a better candidate for bioremediation of PAHs contaminated sites.
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Oxidative Desulfurization of Fuel Oil by Pyridinium-Based Ionic Liquids
Author(s) : Dishun Zhao; Yanan Wang; Erhong Duan;
Author Address : School of Chemical Engineering, Tianjin University, Tianjin, 300072, China
Source : Molecules ; Vol.14 No.11 Nov 2009 [Page 4351-4357]
Keyword(s) : ionic liquids; extraction-oxidation; desulfurization; pyridinium-based;
Abstract : In this work, an N-butyl-pyridinium-based ionic liquid [BPy]BF4 was prepared. The effect of extraction desulfurization on model oil with thiophene and dibenzothiophene (DBT) was investigated. Ionic liquids and hydrogen peroxide (30%) were tested in extraction-oxidation desulfurization of model oil. The results show that the ionic liquid [BPy]BF4 has a better desulfurization effect. The best technological conditions are: V(IL)/V(Oil) /V(H2O2) = 1:1:0.4, temperature 55 °C, the time 30 min. The ratio of desulfurization to thiophene and DBT reached 78.5% and 84.3% respectively, which is much higher than extraction desulfurization with simple ionic liquids. Under these conditions, the effect of desulfurization on gasoline was also investigated. The used ionic liquids can be recycled up to four times after regeneration.
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Study of Adsorption of Sulphur Compounds Employing Zeolites Containing Zinc
Author(s) : Malvesti, Álvaro L.; Mignoni, Marcelo L.; Scherer, Robison P.; Penha, Fábio G.; Pergher, Sibele B. C.;
Source : Quimica Nova ; Vol.32 No.6 2009 [Page 1491-1494]
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Behavior of PtMo/g-Al2O3-B2O3 Catalysts in Naphthalene Hydrodearomatization and dibenzothiophene Hydrodesulfurization Reactions
Author(s) : Baldovino-medrano, Víctor G; Giraldo, Sonia A; Centeno, Aristóbulo;
Source : Información Tecnológica ; Vol.20 No.6 2009 [Page 3-10]
Keyword(s) : PtMo; Boron; hydrodesulfurization; desulfurization reaction routes; catalysts.;
Abstract : With the aim of studying the functionalities of hydrodesulfurization (HDS) catalysts, a series of PtMo/g-Al2O3-B2O3 catalysts wit different concentrations of Mo and B were prepared and tested in naphthalene hidrodesaromatization HDA, under H2S atmosphere, and dibenzothiophene (DBT) hydrodesulfurization reactions. It was observed that under the typical conditions of hydrotreatment processes, these catalysts present a poor HDA performance, as well as they display a high selectivity to the direct desulfurization reaction route of DBT hydrodesulfurization. An analysis of the catalytic behavior of the PtMo system in both reactions agrees well with the hypothesis of the existence of independent Pt and MoS2 active phases, where Pt is considered to act as both promoter and as an active center.
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Preparation and Hydrodesulfurization Catalytic Performance of Ni2P/SiO2/Cordierite Monolithic Catalysts
Author(s) : Dong Lian; Gji Sheng-fu; Wu Ping-yi;
Author Address : State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029
Source : Chinese Journal of Inorganic Chemistry ; Vol.25 No.9 2009 [Page 131]
Keyword(s) : Ni2P cordierite monolithic catalysts hydrodesulfurization dibenzothiophene;
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Study of Adsorption of Sulphur Compounds Employing a Comercial Diesel Dopped with Benzothiophene and dibenzothiophene
Author(s) : Scherer, Robison P.; Malvesti, Álvaro L.; Pergher, Sibele B. C.; Souza, Wladmir Ferraz de;
Source : Quimica Nova ; Vol.32 No.1 2009 [Page 34-37]
Keyword(s) : sulphur compounds; adsorption; fuels.;
Abstract : Desulphurization process by adsorption was studied employing a commercial diesel dooped with 1000 mg/L of benzothiophene and dibenzothiophene. The adsorbents materials employed were three types of activated alumina (acid, basic and neutral). For comparison, adsorption process was made also using oxidized diesel sample. The results showed that the adsorbents were selective for sulphur compounds removal from fuels. The contact time have influence in adsorption process achieving 80% of removal for not oxidized dibenzothiophene. The three studied alumina types showed similar behavior and a greater selective in dibenzothiophene adsorption than benzothiophene. dibenzothiophene removal is more effective in samples not oxidized, whereas the benzothiophene was almost totally removed in oxidized sample.
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The Chemistry of Thiophene S-oxides1 and Related Compounds
Reprint Author E-mail : thies@cm.kyushu-u.ac.jp
Author(s) : Thies Thiemann; David J. Walton; Ana Oliveira Brett; Jesus Iniesta; Frank Marken; Yuan-qiang Li;
Author Address : Institute of Materials Chemistry and Engineering, Kyushu University, 6-1, Kasuga-koh-en, Kasuga-shi, Fukuoka 816-8580, Japan
Source : Arkivoc ; Vol.2009 No.ix 2009 [Page 96-113]
Keyword(s) : Thiophene S-oxides; Diels Alder reaction; photochemistry; electrochemistry;
Abstract : The synthesis and reactivity of thiophene S-oxides is discussed, with special emphasis on the useof thiophene S-oxides as dienes in Diels-Alder type reactions, on the photochemistry and on theelectrochemistry of the molecules. Where useful, the reactivity is compared to that ofbenzo[b]thiophene S-oxides, dibenzothiophene S-oxides, and tetracyclones.
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Novel Reactivity of dibenzothiophene Monooxygenase from Bacillus subtilis WU-S2B
Author(s) : Takashi Ohshiro; Shuhei Nakura; Yoshitaka Ishii; Kuniki Kino; Kohtaro Kirimura; Yoshikazu Izumi;
Source : Bioscience, Biotechnology, and Biochemistry ; Vol.73 No.9 2009 [Page 2128-2130]
Keyword(s) : dibenzothiophene; indole; indigo; monooxygenase;
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