Effect of preparation method on osc and catalytic activity of Ni/laalo3 during sr of propane

Dasari, Harshini (2016) Effect of preparation method on osc and catalytic activity of Ni/laalo3 during sr of propane. In: Chemcon, 27/12/2016, A.C. Tech chennai.

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Abstract

To develop an efficient and economical catalyst for steam reforming of propane, Ni/LaAlO3 catalysts were prepared by deposition precipitation, impregnation, and solvo-thermal methods, and characterised by XRD, BET, H2-TPR, elemental analyses, and TEM. Ni/Al2O3 and Ni/CeO2 catalysts were also synthesized by the solvo-thermal method for comparison. The Ni/LaAlO3 catalysts exhibited higher catalytic performance than each Ni/Al2O3 and Ni/CeO2 catalysts, and activities with Ni/LaAlO3 were found to be dependent upon the preparation ways. Particularly, the Ni/LaAlO3 catalyst synthesized by the solvo-thermal method exhibited the highest activity presumptively as a result of tetrahydrofuran helps distribute generated Ni nanoparticles onto the catalyst surface during a uniform fashion. Additionally, the solvo-thermally prepared Ni/LaAlO3 catalyst was found to be extremely stable, with its activity being maintained at least during 100 h. The observed high stability is attributed to the excellent oxygen storage capacity of LaAlO3 that was initially determined by thermo gravimetric methods as well as by soot oxidations in the presence of Al2O3, CeO2, and LaAlO3. Compared to the Ni/Al2O3 and Ni/CeO2 catalysts, Ni/LaAlO3 exhibited suppressed carbon formation even at lower S/C ratios due to the superior oxygen transport ability of the LaAlO3 support.

Item Type: Conference or Workshop Item (Paper)
Subjects: Engineering > MIT Manipal > Chemical
Depositing User: MIT Library
Date Deposited: 12 Jan 2017 14:45
Last Modified: 12 Jan 2017 14:45
URI: http://eprints.manipal.edu/id/eprint/148051

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