Ceria doped mixed metal oxide nanoparticles as oxidation catalysts: Synthesis and their characterization

Arabian Journal of Chemistry

Mufsir Kuniyil¹  Mujeeb Khan¹  S.F. Adil¹  Abdulrahman Alwarthan¹  S.S.P. Sultana²  D.H.V. Kishore²  K.R.S. Prasad²  Joselito P. Labis³ 

[1] Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia;Department of Chemistry, K.L. University (Koneru Lakshmaiah College of Engineering), Vaddeswaram, Guntur District, Andhra Pradesh 522502, India;King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia;

关键词: Catalysis;    Ceria nanoparticles;    Mixed metal oxide;    Nickel manganese oxide;    Benzyl alcohol oxidation;   

DOI  :  10.1016/j.arabjc.2015.05.008

来源: DOAJ

【 摘 要 】

Mixed metal nanoparticles (NPs) have attracted significant attention as catalysts for various organic transformations. In this study, we have demonstrated the preparation of nickel–manganese mixed metal oxide NPs doped with X% nano cerium oxide (X = 1, 3, 5 mol%) by a facile co-precipitation technique using surfactant and surfactant free methodologies. The as-synthesized materials were calcined at different temperatures (300 °C, 400 °C, and 500 °C), and were characterized using various spectroscopic techniques, including, FTIR and XRD. SEM analysis, TEM analysis and TGA were employed to evaluate the structural properties of the as-prepared catalyst. These were evaluated for their catalytic behaviour towards the conversion of benzyl alcohol to benzaldehyde, which was used as a model reaction with molecular oxygen as oxidant. Furthermore, the effect of the variation of the percentage of nano ceria doping and the calcination temperature on the performance of as-prepared mixed metal catalysts was also evaluated. The kinetic studies of the reactions performed employing gas chromatographic technique have revealed that the mixed metal oxide catalyst doped with 5% nano ceria displayed excellent catalytc activity, among various catalysts synthesized.

【 授权许可】

Unknown