Phosphotungstic acid (PWA) supported on MCM-41 coated nickel ferrite was prepared by impregnation of PWA. The samples have been characterized using X-ray analysis (XRD), Fourier Transform Infrared Spectroscopy (FT-IR) and Transmission Electron Microscopy (TEM). Acidity has been measured by using non-aqueous potentiometric titration of n-butylamine in acetonitrile and catalytic activity has been examined in synthesis of xanthene. The results indicated that the pore structure of MCM-41 was an ordered hexagonal and changed into spherical in MCM-41 coated nickel ferrite. The results showed also that there was an excellent dispersion of PWA on MCM-41 coated nickel ferrite surface. The acidity measurements indicated that the acidity and catalytic activity sharply increase by adding nickel ferrite and PWA to MCM-41.The sample doped with 55 wt. % PWA/MCM-41 coated nickel ferrite measures the highest surface acidity (592.4mV) with catalytic conversion reached to (94.7%). The catalysts can be separated from the reaction mixture by using a magnet.
Ahmed, A. I., El-yazed, W. S. A., & Hayes, O. R. (2019). Synthesis, Characterization and Application of Phosphotungstic Acid /MCM- 41 Coated Nickel Ferrite. Mansoura Journal of Chemistry, 45(3), 6-10. doi: 10.21608/mjcc.2019.413009
MLA
Awad I. Ahmed; W. S. Abou El-yazed; O. R. Hayes. "Synthesis, Characterization and Application of Phosphotungstic Acid /MCM- 41 Coated Nickel Ferrite", Mansoura Journal of Chemistry, 45, 3, 2019, 6-10. doi: 10.21608/mjcc.2019.413009
HARVARD
Ahmed, A. I., El-yazed, W. S. A., Hayes, O. R. (2019). 'Synthesis, Characterization and Application of Phosphotungstic Acid /MCM- 41 Coated Nickel Ferrite', Mansoura Journal of Chemistry, 45(3), pp. 6-10. doi: 10.21608/mjcc.2019.413009
VANCOUVER
Ahmed, A. I., El-yazed, W. S. A., Hayes, O. R. Synthesis, Characterization and Application of Phosphotungstic Acid /MCM- 41 Coated Nickel Ferrite. Mansoura Journal of Chemistry, 2019; 45(3): 6-10. doi: 10.21608/mjcc.2019.413009
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