Preparation of CMI-1 supported H3+xPMo12-xVxO40 for the selective oxidation of propylene

被引：2

作者：

Benadji, Siham ^{[1
,2
,3
]}

Eloy, Pierre ^{[3
]}

Leonard, Alexandre ^{[4
]}

Su, Bao-Lian ^{[4
]}

Rabia, Cherifa ^{[1
]}

Gaigneaux, Eric M. ^{[3
]}

机构：

[1] USTHB, Fac Chim, Lab Chim Gaz Nat, BP 32 El Alia, Bab Ezzouar 16111, Alger, Algeria

[2] Ctr Rech Sci & Tech Analyses Phys Chim CRAPC, Algiers 16004, Algeria

[3] Catholic Univ Louvain, Unite Catalyse & Chimie Mat Divises, B-1348 Louvain, Belgium

[4] Fac Univ Notre Dame Paix, Lab Chimie Mat Inorgan CMI, ISIS, B-5000 Namur, Belgium

来源：

SCIENTIFIC BASES FOR THE PREPARATION OF HETEROGENEOUS CATALYSTS: PROCEEDINGS OF THE 10TH INTERNATIONAL SYMPOSIUM | 2010年 / 175卷

关键词：

HPA; mesoporous silica; CMI-1; dry impregnation; propylene oxidation; SALTS; ACIDS;

D O I：

10.1016/S0167-2991(10)75132-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Catalysts, comprising 30 wt.% of heteropolyacids (HPAs) H3+xPMo12-xVxO40 (x = 0-3) supported on a mesoporous material CMI-1 by dry impregnation were characterized by several techniques. Their catalytic performances were compared to those of bulk HPAs in the propylene oxidation by molecular oxygen at 350 degrees C. The supported HPAs exhibit higher catalytic activity in propylene oxidation than the bulk ones and favoured the formation of acrolein, acetaldehyde and acetic acid, compared to the mother catalysts which lead only to the formation of COx. The enhanced oxidation catalytic activity of supported systems was attributed to the fine dispersion of H3+xPMo12-xVxO40 species on the CMI-1 mesoporous material via physical adsorption, together with the fact that the structure of both CMI-1 and HPAs remained intact during the impregnation.

引用

页码：665 / 669

页数：5

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