Studies of molybdena-alumina catalysts IV. Rates and stoichiometry of sulfidation

Massoth, F.E.

doi:10.1016/0021-9517(75)90022-6

Cited by 202 publications

(53 citation statements)

References 17 publications

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“…However, with the XRD results (not shown) no crystalline phases were detected. These results suggested that MoO 3 crystals are well dispersed or the size is less than 4 nm which agree with previous results [29].…”

Section: Composition Textural and Structural Properties Of Catalystssupporting

confidence: 93%

Effect of support composition on hydrogenolysis of thiophene and Maya crude

et al. 2005

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Section: Composition Textural and Structural Properties Of Catalystssupporting

confidence: 93%

Effect of support composition on hydrogenolysis of thiophene and Maya crude

et al. 2005

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“…Although there are many possible exchange mechanisms on the labile sulfur on the catalyst with H 2 S, it is likely that the reaction proceeds through the transformation of SH groups and vacancies; evidence for the presence of SH groups has been provided by a number of studies (27)(28)(29)(30). More recently, in an FT-IR study on sulfided Mo-based catalysts, it was postulated that SH groups existed at the edges of MoS 2 and that SH groups and vacancies could interconvert and coexist in close proximity (31,32).…”

Section: Sulfur Exchange Reactionmentioning

confidence: 99%

Elucidation of Behavior of Sulfur on Sulfided Co-Mo/Al2O3 Catalyst Using a 35S Radioisotope Pulse Tracer Method

Qian

Ishihara

Guang-de

et al. 1997

Journal of Catalysis

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“…This is a strong argument for models that ascribe the HDS activity to the presence of the disulfide phase in contrast to the monolayer model, molybdenum with oxygen and sulfur ligands (19,20).…”

Section: Activity Measurementsmentioning

confidence: 99%

ESR studies on hydrodesulfurization catalysts: Nickel- or cobalt-promoted sulfided tungsten- or molybdenum-containing catalysts

Konings

Brentjens

Koningsberger

et al. 1981

Journal of Catalysis

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ESR spectra of nickel-or cobalt-promoted sultided tungsten-or molybdenum-containing catalysts are measured together with the influence of equilibration at different H,S/H, ratios and CO adsorption hereon. The ESR measurements are compared with thiophene hydrodesulfurization (HDS) activities. The influence of nickel and cobalt on the ESR spectra is essentially the same. This similarity also holds for the thiophene HDS activities. A new signal VI (g = 2.06, AH = 220 G for Ni-Mo; ,g = 2.08, AH = 220 G for Ni-W) not occurring in unpromoted catalysts is detected. The intensities of signals II, III, IV, and VI are dependent on the composition of the interacting atmosphere. The results are discussed in terms of W&(MoS,) crystallite edge decoration with promotor ions. Possible surface configurations corresponding with the different paramagnetic sites are described.

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Studies of molybdena-alumina catalysts IV. Rates and stoichiometry of sulfidation

Cited by 202 publications

References 17 publications

Effect of support composition on hydrogenolysis of thiophene and Maya crude

Effect of support composition on hydrogenolysis of thiophene and Maya crude

Elucidation of Behavior of Sulfur on Sulfided Co-Mo/Al2O3 Catalyst Using a 35S Radioisotope Pulse Tracer Method

ESR studies on hydrodesulfurization catalysts: Nickel- or cobalt-promoted sulfided tungsten- or molybdenum-containing catalysts

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