Reaction and deactivation study of mesoporous silica-alumina (MSA) in propene oligomerisation

被引：14

作者：

Flego, C ^{[1
]}

Peratello, S ^{[1
]}

Perego, C ^{[1
]}

Sabatino, LMF ^{[1
]}

Bellussi, G ^{[1
]}

Romano, U ^{[1
]}

机构：

[1] EniTechnol SpA, I-20097 San Donato Milanese, MI, Italy

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2003年 / 204卷

关键词：

propene oligomerisation; deactivation; mesoporous silica-alumina (MSA); acidity;

D O I：

10.1016/S1381-1169(03)00341-8

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：

The deactivation of mesoporous silica-alumina (MSA) catalyst was investigated in the propene oligomerisation. Three catalysts with different acid site distribution were synthesised and tested, in order to determine the role of the acid sites in both main and side reactions. The initial activity is correlated with the Lewis acid site density. A two-stage mechanism for deactivation has been proposed. At the beginning of the reaction, poisoning of the active site takes place, the decay rate being consistent with the strength of the Lewis acid sites. At longer reaction time pore blockage, caused by an increasing of the dimensions of the adsorbed organic residues, becomes the main side phenomenon. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：581 / 589

页数：9

共 34 条

[1] EVALUATION OF MODES OF CATALYST DEACTIVATION BY COKING FOR CUMENE CRACKING OVER ZEOLITES [J].