Functionalization of mesoporous carbon with superbasic MgO nanoparticles for the efficient synthesis of sulfinamides

Chakravarti, Rajashree, Mano, Ajayan, Iwai, Hideo, Aldeyab, Salem S., Kumar, R. Pradeep, Kantam, M. Lakshmi and Vinu, Ajayan (2011) Functionalization of mesoporous carbon with superbasic MgO nanoparticles for the efficient synthesis of sulfinamides. Chemistry: A European Journal, 17 24: 6673-6682. doi:10.1002/chem.201002885

Author Chakravarti, Rajashree
Mano, Ajayan
Iwai, Hideo
Aldeyab, Salem S.
Kumar, R. Pradeep
Kantam, M. Lakshmi
Vinu, Ajayan
Title Functionalization of mesoporous carbon with superbasic MgO nanoparticles for the efficient synthesis of sulfinamides
Journal name Chemistry: A European Journal   Check publisher's open access policy
ISSN 0947-6539
Publication date 2011-06-06
Sub-type Article (original research)
DOI 10.1002/chem.201002885
Volume 17
Issue 24
Start page 6673
End page 6682
Total pages 10
Place of publication Weinheim, Germany
Publisher Wiley
Language eng
Formatted abstract
Highly basic MgO nanoparticles with different sizes have been successfully immobilized over mesoporous carbon with different pore diameters by a simple wet-impregnation method. The prepared catalysts have been characterized by various sophisticated techniques, such as XRD, nitrogen adsorption, electron energy loss spectroscopy, high-resolution TEM, X-ray photoelectron spectroscopy, and the temperature-programmed desorption of CO2. XRD results reveal that the mesostructure of the support is retained even after the huge loading of MgO nanoparticles inside the mesochannels of the support. It is also demonstrated that the particle size and dispersion of the MgO nanoparticles on the support can be finely controlled by the simple adjustment of the textural parameters of the supports. Among the support materials studied, mesoporous carbon with the largest pore diameter and large pore volume offered highly crystalline small-size cubic-phase MgO nanoparticles with a high dispersion. The basicity of the MgO-supported mesoporous carbons can also be controlled by simply changing the loading of the MgO and the pore diameter of the support. These materials have been employed as heterogeneous catalysts for the first time in the selective synthesis of sulfinamides. Among the catalysts investigated, the support with the large pore diameter and high loading of MgO showed the highest activity with an excellent yield of sulfinamides. The catalyst also showed much higher activity than the pristine MgO nanoparticles. The effects of the reaction parameters, including the solvents and reaction temperature, and textural parameters of the supports in the activity of the catalyst have also been demonstrated. Most importantly, the catalyst was found to be highly stable, showing excellent activity even after the third cycle of reaction.
Keyword Carbon
Heterogeneous catalysis
Mesoporous materials
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
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Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
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