Kinetics of the β-picoline oxidation to nicotinic acid over vanadia-titania catalyst.: 2.: Effect of dioxygen and β-picoline

被引：6
|
作者：
Ovchinnikova, Elena V. [1 ]
Andrushkevich, Tamara V. [1 ]
机构：
[1] Boreskov Inst Catalysis, Novosibirsk 630090, Russia
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 2008年 / 93卷 / 02期
关键词：
beta-picoline; nicotinic acid; oxygen; V-Ti-O catalyst;
D O I：
10.1007/s11144-008-5261-2
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：
The effect of the dioxygen and beta-picoline concentrations on the oxidation of beta-picoline to nicotinic acid was studied at 270 degrees C over a 20% V2O5 - 80% TiO2 (wt. %) catalyst. The study was performed in a differential reactor at constant concentrations of water and nicotinic acid. A considerable excess of dioxygen was shown to be necessary for the formation of nicotinic acid. It was found that the rates of P-picoline transformation into nicotinic acid, pyridine-3-carbaldehyde, pyridine-3-nitrile, pyridine and carbon oxides as well as selectivities to products and the catalyst state depend strongly on the ratio of dioxygen to P-picoline concentrations. The minimum admissible ratio of these concentrations under industrial conditions was determined.
引用
收藏
页码：203 / 210
页数：8
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