Low-Dimensional ReS2/C Composite as Effective Hydrodesulfurization Catalyst

Single-layer, ultrasmall ReS2 nanoplates embedded in amorphous carbon were synthesized from a hydrothermal treatment involving ammonium perrhenate, thiourea, tetraoctylammonium bromide, and further annealing. The rhenium disulfide, obtained as a low dimensional carbon composite (ReS2/C), was tested...

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Bibliographic Details
Published inCatalysts Vol. 7; no. 12; p. 377
Main Authors Aliaga, Juan, Zepeda, Trino, Araya, Juan, Paraguay-Delgado, Francisco, Benavente, Eglantina, Alonso-Núñez, Gabriel, Fuentes, Sergio, González, Guillermo
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2017
Subjects
3-methylthiophene
Aluminum oxide
Catalysis
Catalysts
Catalytic activity
Chemical reactions
Chemical synthesis
Energy dispersive X ray spectroscopy
Energy transmission
hidrodesulfurization
Hydrocarbons
Hydrodesulfurization
Hydrothermal treatment
light S-hydrocarbons
Planes
Process parameters
Rhenium
rhenium disulfide
Scanning electron microscopy
Scanning transmission electron microscopy
single layer
solvothermal synthesis
Spectrum analysis
Sulfur
thiophene
X ray photoelectron spectroscopy
X-ray diffraction
X-rays
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Summary:Single-layer, ultrasmall ReS2 nanoplates embedded in amorphous carbon were synthesized from a hydrothermal treatment involving ammonium perrhenate, thiourea, tetraoctylammonium bromide, and further annealing. The rhenium disulfide, obtained as a low dimensional carbon composite (ReS2/C), was tested in the hydrodesulfurization of light hydrocarbons, using 3-methylthiophene as the model molecule, and showed enhanced catalytic activity in comparison with a sulfide CoMo/γ-Al2O3 catalyst. The ReS2/C composite was characterized by X-ray diffraction (XRD), Raman spectroscopy, N2 adsorption-desorption isotherms, scanning electron microscopy (SEM), scanning transmission electron microscopy (STEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS). The improved catalytic performance of this ReS2/C composite may be ascribed to the presence of a non-stoichiometric sulfur species (ReS2−x), the absence of stacking along the c-axis, and the ultra-small basal planes, which offer a higher proportion of structural sulfur defects at the edge of the layers, known as a critical parameter for hydrodesulfurization catalytic processes.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal7120377