Studies on Ceria Supported Vanadium Incorporated Ammonium Salt of 12-Molybdophosphoric Acid Catalysts

被引：4

作者：

Reddy, K. Mohan ^{[1
]}

Lingaiah, N. ^{[1
]}

Rao, P. S. N. ^{[1
]}

Nagaraju, P. ^{[1
]}

Prasad, P. S. Sai ^{[1
]}

Suryanarayana, I. ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Inorgan & Phys Chem Div, Hyderabad 500607, Andhra Pradesh, India

来源：

CATALYSIS LETTERS | 2009年 / 130卷 / 1-2期

关键词：

12-Molybdophosphoric acid; Vanadium; Ceria; Ammoxidation; 2-Methylpyrazine; 2-Cyanopyrazine; OXIDATIVE DEHYDROGENATION; SELECTIVE OXIDATION; OXIDE CATALYSTS; H3+NPVNMO12-NO40 HETEROPOLYACIDS; CEVO4; PHASE; AMMOXIDATION; METHANOL; PROPANE; SILICA; RAMAN;

D O I：

10.1007/s10562-009-9842-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of ceria supported vanadium incorporated ammonium salt of 12-molybdophosphoric acid (AMPV) catalysts were synthesized in a single-step by generating Keggin structure in situ. These catalysts were characterized by X-ray diffraction, FT-infrared, BET surface area, thermal analysis (TG/DTA) temperature programed reaction and acidity by potentiometric titration. The catalytic activities of these catalysts were tested for the vapor phase ammoxidation of 2-methylpyrazine to 2-cyanopyrazine. The CeO2 supported AMPV catalysts are more active and selective compared to other supports. The high activity and selectivity of these catalysts are related to the presence of both redox vanadium and oxygen storage release function of ceria.

引用

页码：154 / 160

页数：7

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