Ytterbia doped nickel–manganese mixed oxide catalysts for liquid phase oxidation of benzyl alcohol

Journal of Saudi Chemical Society

卷:21

M.E. Assal¹  Syed F. Adil¹  Mohammed Rafiq H. Siddiqui¹  Mujeeb Khan¹  Abdulrahman Alwarthan¹  Naushad Ahmad¹  S.S.P. Sultana²  Mufsir Kuniyil²  D.H.V. Kishore²  K.R.S. Prasad²  Roushown Ali³ 

[1] Department of Chemistry, College of Science, King Saud University, P.O. 2455, Riyadh 11451, Saudi Arabia;

[2] Department of Chemistry, K L University, Guntur, Andhra Pradesh 522502, India;

[3] Department of Chemistry, University of Rajshahi, Rajshahi 6205, Bangladesh;

关键词: Ytterbia;    Nickel–manganese mixed oxides;    Catalytic activity;    Oxidation;    Benzyl alcohol;   

DOI  :  10.1016/j.jscs.2017.07.002

来源: DOAJ

【 摘 要 】

Nickel–manganese mixed oxides doped with 1, 3, 5 mol% ytterbia have been prepared by co-precipitation method and used in the catalytic oxidation of benzyl alcohol. Catalytic activity of these oxides calcined at 400 °C and 500 °C was studied for selective oxidation of benzyl alcohol to the corresponding aldehyde using molecular oxygen as an oxidizing agent. The results showed that thermally stable 5 mol% ytterbia doped nickel–manganese oxide [Yb2O3-(5%)-Ni6MnO8] exhibited highest catalytic performance when it was calcined at 400 °C. A 100% conversion of the benzyl alcohol was achieved with >99% selectivity to benzaldehyde within a reaction period of 5 h at 100 °C. The mixed oxide prepared has been characterized by scanning election microscopy (SEM) and energy dispersive X-ray analysis (EDXA), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), Brunauer–Emmett–Teller (BET) and temperature programed reduction (H2-TPR).

【 授权许可】

Unknown