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New effective catalysts based on mesoporous nanofibrous carbon for selective oxidation of hydrogen sulfide

Shinkarev, V.V., Glushenkov, A.M., Kuvshinov, D.G. and Kuvshinov, G.G. 2009, New effective catalysts based on mesoporous nanofibrous carbon for selective oxidation of hydrogen sulfide, Applied catalysis B : environmental, vol. 85, no. 3-4, pp. 180-191, doi: 10.1016/j.apcatb.2008.07.011.

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Title New effective catalysts based on mesoporous nanofibrous carbon for selective oxidation of hydrogen sulfide
Author(s) Shinkarev, V.V.
Glushenkov, A.M.
Kuvshinov, D.G.
Kuvshinov, G.G.
Journal name Applied catalysis B : environmental
Volume number 85
Issue number 3-4
Start page 180
End page 191
Total pages 12
Publisher Elsevier BV
Place of publication Amsterdam, The Netherlands
Publication date 2009-01
ISSN 1873-3883
1873-3883
Keyword(s) hydrogen sulfide selective oxidation
nanostructure
carbon nanofiber
carbon nanotube
oxygen excess
Summary The systems based on granular mesoporous nanofibrous carbonaceous (NFC) materials synthesized by decomposition of hydrocarbons over nickel- containing catalysts are promising catalysts for selective oxidation of hydrogen sulfide. Sample series of nanofibrous carbon with three main types of their fiber structures and different contents of metal catalysts inherited from the catalysts for their synthesis were studied in this reaction. The correlation between NFC structure and its activity and selectivity in hydrogen sulfide oxidation was determined. The metal inherited from the initial catalysts for the synthesis of NFC influences the activity and selectivity of the resulting carbon catalysts. A particular influence is observed in the case of the catalyst withdrawn from the synthesis reactor at the stage of stationary operation of the metal catalyst (low specific carbon yields per unit weight of the catalyst). The presence of the metal phase results in an increase in the carbon catalyst activity and in a decrease in the selectivity to sulfur. NFC samples with the highest activity and selectivity are nanotubes and those with graphite planes perpendicular to the axis of the fibers. Carbon nanotubes have high selectivity, while samples obtained on copper–nickel catalysts also possess high activity. The promising NFC catalysts provide high conversion and selectivity (almost independent of the molar oxygen/hydrogen sulfide ratio) when a large excess of oxygen is contained in the reaction mixture.
Language eng
DOI 10.1016/j.apcatb.2008.07.011
Field of Research 030601 Catalysis and Mechanisms of Reactions
030302 Nanochemistry and Supramolecular Chemistry
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2008, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30023705

Document type: Journal Article
Collection: Centre for Material and Fibre Innovation
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