Hydrodesulfurization of dibenzothiophene

Figure 2.15 Examples of volcano plots, describing the reaction rate as a function ofthe heat of adsorption (left), and the activity of the second-row and third-row transition metal sulfides in the hydrodesulfurization of dibenzothiophene (right).

Reaction network for the hydrodesulfurization of dibenzothiophene and for the hydrogenation of acenaphthene and biphenyl... 

Kwak C., Lee J. J., Bae J. S. and Moon S. H., Poisoning effect of nitrogen compounds on the performance of C0M0S/AI2O3 catalyst in the hydrodesulfurization of dibenzothiophene 4-methyldibenzothio phene and 4-6-dimethyldibenzothiophene, Appl. Catal. B Environ. 35 (2001) pp. 59-68. 

Figure 2 Effect of hydrogen sulfide on hydrodesulfurization of dibenzothiophene (DBT) over a Co/Mo/Alumina catalyst. (Based on experimental data from Ref. 2.)...

Farag, H., Mochida, I., and Sakanishi, K. Fundamental comparison studies on hydrodesulfurization of dibenzothiophenes over CoMo-based carbon and alumina catalysts. Applied. Catalysis. A, General, 2000, 194, 147. 

Song, C. and Reddy, K.M. Mesoporous zeolite-supported Co-Mo catalyst for hydrodesulfurization of dibenzothiophene in distillate fuels. American Chemical Society, Division of Petroleum Chemistry, 1996, 41, 567. 

Hydrodesulfurization of Dibenzothiophene on a Nitrided Supported Molybdena-Alumina Catalyst... 

Three NiMo-HNaY-alumina catalysts with similar composition were prepared by different methods and tested in the hydrodesulfurization of dibenzothiophene (DBT) and 4,6-dimethyl-DBT. It was found that the catalyst preparation method induces some changes of the characteristics of the deposited metallic species as well as of the acidic properties of the zeolite component. These changes affect the catalytic behavior in the hydrodesulfurization of DBT and 4,6-DMDBT. Acidic properties of the catalyst seem to be more important for the conversion of alkyl-substituted DBT. 

In a further work, Tang and Curtis26 have studied the influence of the tyre components by replacing coal with model compounds 4-(l-naphthylmethyl)-bibenzyl (NMBB), dibenzothiophene and 5-methyl-8-(l-methylethyl)dibenzo-thiophen-4-ol (MMDH). Carbon black was active for the NMBB hydrocracking, whereas little activity was found with SBR, waste tyres and waste tyre liquefaction residues. However, when the latter residues were previously heat treated to remove organic coatings and recover the carbon black component, significant NMBB conversions were observed. Moreover, both carbon black and heat-treated residues were active for the hydrodesulfurization of dibenzothiophene and MMDH, particularly when combined with Mo naphthenate and S. These results confirm the catalytic properties of carbon black in coal-tyre coliquefaction, provided that its surface area is accessible. 

Abstract MoP/Si02 and M0P/AI2O3 can be prepared by treating supported Mo metal particles with phosphine and hydrogen. The resulting materials have high activities in the hydrodesulfurization of dibenzothiophene and the hydrodenitrogenation of o-methylaniline. 

Effects of additives on the hydrodesulfurization of dibenzothiophene on nitrided molybdena-alumina catalyst... 

Surface area and nitrogen content of the nitrided 12.5% M0/AI2O3 catalysts and the rates of the hydrodesulfurization of dibenzothiophene at 553 K... 

Qian, W., Yoda, Y., Hirai, Y., Ishihara, A., Kabe, T. (1999). Hydrodesulfurization of dibenzothiophene and hydrogenation of phenanthrene on alumina-supported Pt and Pd catalysts. Applied Catalysis A General, 184, 81—88. http //dx.doi.org/10.1016/S0926-860X(99)00083-6. 

Egorova M, Prins R (2004) Hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene over sulfided NiMo/y-Al203, CoMo/y-Al203, and M0/Y-AI2O3 catalysts. J Catal 225 417 27... 

Kabe T, Aoyama Y, Wang D, Ishihara A, Qian W, Hosoya M, Zhang Q (2001) Effects of H2S on hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene on alumina-supported NiMo and NiW catalysts. Appl Catal Gen 209 237-247... 

Wang H, Prins R (2009) Hydrodesulfurization of dibenzothiophene, 4,6-dimethyldibenzothiophene, and their hydrogenated intermediates over Ni-MoS2/ Y-AI2O3. J Catal 264 31 3... 

Farag H, Sakanishi K, Kouzu M, Matsumura A et al (2003) Dual character of H2S as promoter and inhibitor for hydrodesulfurization of dibenzothiophene. Catal Commun 4 321-326... 

Figure 6.8.2 Stability diagram of hydrodesulfurization of dibenzothiophene (for principle aspects of a stability diagram based on the standard Gibbs functions of formation ApC° see Section 4.2.1).

Houalla, M Nag, N.K., Sapre, A.V., Broderick, D.H., and Gates, B.C. (1978) Hydrodesulfurization of dibenzothiophene catalyzed by sulfided cobalt oxide-molybdemun trioxide/ y-alumina the reaction network. AIChE J., 24, 1015 ff. 

Song, C., and Reddy, K. M. Mesoporous Zeolite-Supported Co-Mo Catalyst for Hydrodesulfurization of Dibenzothiophene in DistUlate Fuels. ACS Div. Petrol. Chem. Preprints, 1996,41, 567-573. 

Piins, R. Catalytic HydrodenitrogenatioiL Advances in Catalysis, 2001,46, 399-464. Houalla, M. Nag, N. K. Sapre, A. V. Broderick, D. H. Gates, B. C. Hydrodesulfurization of Dibenzothiophene Catalyzed by Sulfided C0O-M0O3/Y-AI2O3 The Reaction Network. AIChEJ. 1978,24,1015. 

Kabe, T., Ishihara, A. and Zhang, Q. Deep Desulfurization of Light Oil. 2. Hydrodesulfurization of Dibenzothiophene, 4-Methyldibenzothiophene and 4,6-Dimethyldibenzothiophene. Appl. Catal. A-Gen. 1993, 97, L1-L9. 

Wang, A.J., Wang, Y., Kabe, T. Chen, Y.Y., Ishihara, A. Qian, W.H. Hydrodesulfurization of dibenzothiophene over siliceous MCM-41-supported catalysts. I. Sulfided Co-Mo catalysts, J. Cata. 2001,199,19. 

Figure 10.5 The Two Reaction Pathways for the Hydrodesulfurization of Dibenzothiophene (DBT) Leading Either to Cyclohexylbenzene Through the Hydrogenating (HYD) Route or to Biphenyl Through the Direct Desulfurization (DDS) Route.

A. Sampieri, Hydrodesulfurization of dibenzothiophene on M0S2/MCM4I and M0S2/SBA-15 catalysts prepared by thermal spreading of M0O3,2005, Catal. Today, 108-108,537-544. 

Rana, M.S., Capitaine, E.M.R., Leyva, C., Ancheyta, J. 2007. Effect of catalyst preparation and support composition on hydrodesulfurization of dibenzothiophene and maya crude oil Fuel 86 1254-1262. 

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