Catalytic activity of vanadium-substituted molybdophosphoric acid supported on titania for the vapor-phase synthesis of isophthalonitrile

被引：4

作者：

Senapati, R. N. ^{[1
]}

Dutta, P. ^{[1
]}

Rana, Surjyakanta ^{[2
]}

Parida, K. M. ^{[3
]}

Sahu, S. ^{[4
]}

Sarkar, A. ^{[4
]}

机构：

[1] CSIR, Cent Inst Min & Fuel Res, Dhanbad 828108, Bihar, India

[2] Univ KwaZulu Natal, Durban, South Africa

[3] SOA Univ, Ctr Nano Sci & Nanotechnol, Bhubaneswar, Orissa, India

[4] Indian Sch Mines Univ, Dhanbad, Jharkhand, India

来源：

INORGANIC AND NANO-METAL CHEMISTRY | 2017年 / 47卷 / 10期

关键词：

Heteropoly acid; TiO2; ammoxidation; m-xylene; isophthalonitrile; 12-MOLYBDOPHOSPHORIC ACID; SELECTIVE OXIDATION; AMMONIUM-SALT; AMMOXIDATION; 2-METHYLPYRAZINE; HETEROPOLYACIDS; REACTIVITY; ZIRCONIA; SURFACE; TOLUENE;

D O I：

10.1080/24701556.2017.1357575

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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, N-2 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 degrees 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.

引用

页码：1429 / 1435

页数：7

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