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Vanadia supported on nickel manganese oxide nanocatalysts for the catalytic oxidation of aromatic alcohols.

Adil SF, Alabbad S, Kuniyil M, Khan M, Alwarthan A, Mohri N, Tremel W, Tahir MN, Siddiqui MR - Nanoscale Res Lett (2015)

Bottom Line: It was observed that the calcination temperature and the size of particles play an important role in the catalytic process.The catalyst was evaluated for its oxidation property against aliphatic and aromatic alcohols, which was found to display selectivity towards aromatic alcohols.The samples were characterized by employing scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller analysis, thermogravimetric analysis, and X-ray photoelectron spectroscopy.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh, 11451 Kingdom of Saudi Arabia.

ABSTRACT
Vanadia nanoparticles supported on nickel manganese mixed oxides were synthesized by co-precipitation method. The catalytic properties of these materials were investigated for the oxidation of benzyl alcohol using molecular oxygen as oxidant. It was observed that the calcination temperature and the size of particles play an important role in the catalytic process. The catalyst was evaluated for its oxidation property against aliphatic and aromatic alcohols, which was found to display selectivity towards aromatic alcohols. The samples were characterized by employing scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller analysis, thermogravimetric analysis, and X-ray photoelectron spectroscopy.

No MeSH data available.


TGA curves of the synthesized catalyst (a) V2O5(1%)-NiMnO, (b) V2O5(3%)-NiMnO, and (c) V2O5(5%)-NiMnO.
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Fig5: TGA curves of the synthesized catalyst (a) V2O5(1%)-NiMnO, (b) V2O5(3%)-NiMnO, and (c) V2O5(5%)-NiMnO.

Mentions: The thermal stability of the as synthesized catalyst with different % loading of vanadium oxide nanoparticles were studied using TGA analysis. Temperature was programmed from 25°C to 800°C at a heating rate of 10°C min−1. It was observed that almost all the synthesized catalysts are thermally stable, yielding a maximum loss of weight of 20.23% at 800°C found in the case of 1% V2O5-nanoparticle-loaded catalyst making it to be the least thermally stable among the synthesized catalysts, while the catalysts with 3% V2O5 and 5% V2O5 can be assumed to be the most thermally stable catalysts with a least weight loss % of just 16.5% and 17.2%, respectively, at 800°C. A graphical illustration is given in Figure 5Figure 5


Vanadia supported on nickel manganese oxide nanocatalysts for the catalytic oxidation of aromatic alcohols.

Adil SF, Alabbad S, Kuniyil M, Khan M, Alwarthan A, Mohri N, Tremel W, Tahir MN, Siddiqui MR - Nanoscale Res Lett (2015)

TGA curves of the synthesized catalyst (a) V2O5(1%)-NiMnO, (b) V2O5(3%)-NiMnO, and (c) V2O5(5%)-NiMnO.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385214&req=5

Fig5: TGA curves of the synthesized catalyst (a) V2O5(1%)-NiMnO, (b) V2O5(3%)-NiMnO, and (c) V2O5(5%)-NiMnO.
Mentions: The thermal stability of the as synthesized catalyst with different % loading of vanadium oxide nanoparticles were studied using TGA analysis. Temperature was programmed from 25°C to 800°C at a heating rate of 10°C min−1. It was observed that almost all the synthesized catalysts are thermally stable, yielding a maximum loss of weight of 20.23% at 800°C found in the case of 1% V2O5-nanoparticle-loaded catalyst making it to be the least thermally stable among the synthesized catalysts, while the catalysts with 3% V2O5 and 5% V2O5 can be assumed to be the most thermally stable catalysts with a least weight loss % of just 16.5% and 17.2%, respectively, at 800°C. A graphical illustration is given in Figure 5Figure 5

Bottom Line: It was observed that the calcination temperature and the size of particles play an important role in the catalytic process.The catalyst was evaluated for its oxidation property against aliphatic and aromatic alcohols, which was found to display selectivity towards aromatic alcohols.The samples were characterized by employing scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller analysis, thermogravimetric analysis, and X-ray photoelectron spectroscopy.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh, 11451 Kingdom of Saudi Arabia.

ABSTRACT
Vanadia nanoparticles supported on nickel manganese mixed oxides were synthesized by co-precipitation method. The catalytic properties of these materials were investigated for the oxidation of benzyl alcohol using molecular oxygen as oxidant. It was observed that the calcination temperature and the size of particles play an important role in the catalytic process. The catalyst was evaluated for its oxidation property against aliphatic and aromatic alcohols, which was found to display selectivity towards aromatic alcohols. The samples were characterized by employing scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller analysis, thermogravimetric analysis, and X-ray photoelectron spectroscopy.

No MeSH data available.