Reaction of methanol and n-propanol over hydrotalcite-like catalysts containing vanadium oxide

被引:10
|
作者
Dinka, P [1 ]
Prandová, K [1 ]
Hronec, M [1 ]
机构
[1] Slovak Univ Technol Bratislava, Dept Organ Technol, Bratislava 81237, Slovakia
关键词
hydrotalcite; hydrotalcite-like compounds; polyoxovanadate pillared hydrotalcite; isobutyric aldehyde;
D O I
10.1016/S0169-1317(98)00039-8
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
Vapour phase synthesis of isobutyric aldehyde from methanol and n-propanol (molar ratio 10:1) was carried out in a fixed bed reactor over calcined hydrotalcites and hydrotalcite-like compounds containing various amounts of vanadium oxide. V2O5 was loaded by impregnation or by decomposition of intercalated decavanadate ions. The influence of the Mg/Al ratio, and the V2O5 content as well as effect of some other reaction parameters was studied for both types of catalysts. The mechanism of isobutyric aldehyde formation from n-propyl alcohol and methanol involves formation of metal enolates as intermediates. The catalysts were characterized by X-ray diffraction (XRD), temperature-programmed reduction (TPR), surface area and basicity measurements. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:467 / 477
页数:11
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