Catalytic activity of vanadium-substituted molybdophosphoric acid supported on titania for the vapor-phase synthesis of isophthalonitrile. Issue 10 (3rd October 2017)

• Record Type: Journal Article
• Authors: Senapati, R. N.; Dutta, P.; Rana, Surjyakanta; Parida, K. M.; Sahu, S.; Sarkar, A.
• Is Part Of: Inorganic and nano-metal chemistry. Volume 47:Issue 10(2017)
• Page Start: 1429
• Page End: 1435
• Publication Date: 2017-10-03
• Subjects: Heteropoly acid -- TiO2 -- ammoxidation -- m-xylene -- isophthalonitrile; Inorganic compounds -- Synthesis -- Periodicals; Nanostructured materials -- Periodicals; Reactivity (Chemistry) -- Periodicals; Inorganic compounds -- Synthesis; Nanostructured materials; Reactivity (Chemistry); Periodicals; 546
• DOI: 10.1080/24701556.2017.1357575
• Languages: English
• ISSNs: 2470-1556

Abstract

ABSTRACT: Different wt% of vanadium-substituted molybdophosphoric acid H4PMo11VO40 loaded on titania (TiO2 ) are prepared by wet impregnation method. The catalytic activity of PMoV-supported titania catalyst for the vapor-phase ammoxidation of m -xylene at different temperatures is reported here. The synthesized catalysts were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction, N2 adsorption–desorption, thermogravimetric/differential thermal analysis, temperature programmed desorption (TPD), temperature programmed reduction (TPR) scanning electron microscopy, energy-dispersive X-ray spectroscopy (EDX), and transmission electron microscopy (TEM). FTIR studies confirmed that the Keggin structure of PMoV does not change even up to 460°C when loaded on TiO2 surface. Among all the PMoV-supported TiO2 catalysts, 1.7% PMoV/TiO2 showed excellent activity for vapor-phase ammoxidation of m -xylene with 85.4% yield of isophthalonitrile.