REACTIVITY AND MORPHOLOGY OFNi,Mo, ANDNi–MoOXIDE CLUSTERS SUPPORTED ON MCM-48 TOWARD THIOPHENE HYDRODESULPHURIZATION

Catherine Bartholomew, Ashish Chakradhar, Uwe Burghaus (), Chia-Ming Wu, Rui Peng, Srujan Mishra and Ranjit T. Koodali ()
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Catherine Bartholomew: Department of Chemistry and Biochemistry, North Dakota State University, Fargo 58108, USA
Ashish Chakradhar: Department of Chemistry and Biochemistry, North Dakota State University, Fargo 58108, USA
Uwe Burghaus: Department of Chemistry and Biochemistry, North Dakota State University, Fargo 58108, USA
Chia-Ming Wu: Department of Chemistry, University of South Dakota, Vermillion 57069, USA
Rui Peng: Department of Chemistry, University of South Dakota, Vermillion 57069, USA
Srujan Mishra: Nanoscience and Nanoengineering, South Dakota School of Mines and Technology, Rapid City 57701, USA
Ranjit T. Koodali: Department of Chemistry, University of South Dakota, Vermillion 57069, USA

Surface Review and Letters (SRL), 2014, vol. 21, issue 05, 1-11

Abstract: In this paper, the morphology, chemical composition and reactivity of MCM-48 powders impregnated withNi,Moor both toward hydrodesulphurization (HDS) of thiophene were characterized. The reactivity of the catalyst was quantitatively compared with a standard industrial catalyst (from HaldorTopsoe, Denmark) and a novelWS2nanotube-based catalysts (from R. Tenne, Israel). Morphology and chemical composition were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), and EDX elemental maps. Reactivity was determined in a gas-chromatograph based mini flow reactor using thiophene as a probe molecule. The sulfided MCM-48 supportedMocatalyst showed the largest HDS activity with turnover frequencies (TOF) about half as large as for the commercial system under the test conditions used here. Presulfiding did increase activity of all MCM-48 catalysts.

Keywords: Microporous materials; nanostructures; catalytic properties; surface properties; chemical synthesis (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1142/S0218625X14500607

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