Novel supported catalyst for hydrodesulfurization reaction

Wajnert, A.; Wojciechowska, Maria; Pietrowski, Mariusz; Przystajko, W.

doi:10.1016/j.catcom.2007.12.018

Cited by 10 publications

(4 citation statements)

References 16 publications

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“…The activity also does not depend on the size of the metal crystallites. As has been shown in [26], for the supports calcined at 400°C, the iridium dispersion was the highest for MgO (99.5%), then for Ir/62MgO (81.2%), and the lowest for Ir/MgF 2 (49.5%). Thus, it is reasonable to conclude that the factor determining the catalyst activity is the type of the support.…”

Section: Resultsmentioning

confidence: 59%

“…On the basis of the earlier results [26], sample 62MgO proved to be the best support for iridium phase in HDS of thiophene. In this study, the samples 62MgO, MgF 2 and MgO obtained by the sol-gel method were the supports of the active iridium phase in the amount of 1 wt%.…”

Section: Resultsmentioning

confidence: 89%

“…The choice of this sample was dictated by the fact that in the earlier study it had been shown to be the best support of iridium catalysts for thiophene HDS [26]. The texture of the 62MgO sample calcined in the range 400-800°C was more stable than that of pure MgF 2 and MgO.…”

Section: Resultsmentioning

confidence: 96%

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Properties of Magnesium Oxo-Fluoride Supports for Metal Catalysts

et al. 2008

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A mixed MgF 2 -MgO system has been tested as a potential support of iridium catalysts in the hydrodesulfurization of thiophene. Samples of MgF 2 -MgO with different contents of MgO (0-100%) have been prepared by one-step sol-gel method in the reaction of magnesium methoxide dissolved in methanol with hydrofluoric acid. They have been used as supports for the synthesis of iridium (1 wt% Ir) catalysts. The supports have been characterized by XRD, low temperature nitrogen adsorption and thermogravimetric measurements. The one-step method of MgF 2 -MgO synthesis has been shown to permit the control of MgO content in the mixed system. The MgF 2 -MgO samples are classified as mesoporous, of large surface area (100-450 m 2 g -1 ) depending on the amount of MgO introduced, with the maximum for 71 mol% MgO. The presence of two phases in the mixture delays the process of both MgF 2 and MgO crystallization and increases the resistance of the MgF 2 -MgO texture to treatment at temperatures up to 800°C. The catalysts obtained by deposition of the iridium phase on MgF 2 , MgO and MgF 2 -MgO (62 mol% MgO) calcined at 400-700°C, have been tested in the reaction of hydrodesulfurization of thiophene. The most active has been the iridium catalyst supported on MgF 2 -MgO.

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Section: Resultsmentioning

confidence: 59%

Section: Resultsmentioning

confidence: 89%

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Properties of Magnesium Oxo-Fluoride Supports for Metal Catalysts

et al. 2008

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“…This method permits obtaining MgF 2 -MgO supports of the surface area reaching even 400 m 2 /g. We have already used this support for iridium active phase [26]. As the Ir/MgF 2 -MgO catalysts have shown high activity in the HDS reaction of thiophene, an attempt is made in this study to use this support for the production of new gold catalysts and to analyze their performance in CO oxidation for different contents of MgO in the support.…”

Section: Introductionmentioning

confidence: 98%

Effect of MgO content in the support of Au/MgF2–MgO catalysts on CO oxidation

Tomska-Foralewska

Przystajko

Pietrowski

et al. 2010

Reac Kinet Mech Cat

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Novel magnesium oxo-fluoride supports containing different amounts of MgO, prepared by the sol-gel method have been proposed for the synthesis of gold catalysts. The MgF 2 -MgO supports have mesoporous structure and their surface area is a few times larger than those of pure MgF 2 or pure MgO. Gold catalysts have been prepared by impregnation of the MgF 2 -MgO supports with HAuCl 4 in the amount corresponding to 1 wt.% Au. The gold catalysts has been characterized by XRD, TEM measurements and the catalytic activity in CO oxidation at temperatures 30-300°C have been performed. The Au/MgF 2 -MgO catalysts show higher activities (depending on the content of MgO in the support) as compared to Au/ MgF 2 and Au/MgO prepared under the same conditions. Their activities fall into the upper range of gold catalysts supported on other carrier reported in literature.

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Catalysts for Hydrogenations, Dehydrogenations and Metathesis

Busca¹

2014

Heterogeneous Catalytic Materials

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Novel supported catalyst for hydrodesulfurization reaction

Cited by 10 publications

References 16 publications

Properties of Magnesium Oxo-Fluoride Supports for Metal Catalysts

Properties of Magnesium Oxo-Fluoride Supports for Metal Catalysts

Effect of MgO content in the support of Au/MgF2–MgO catalysts on CO oxidation

Catalysts for Hydrogenations, Dehydrogenations and Metathesis

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