Gasoline desulfurization by catalytic alkylation over silica-supported heteropolyacids: From model reaction to real feed conversion

被引：45

作者：

Arias, Maria ^{[1
]}

Laurenti, Dorothee ^{[1
]}

Geantet, Christophe ^{[1
]}

Vrinat, Michel ^{[1
]}

Hideyuki, Itou ^{[2
]}

Yoshimura, Yuji ^{[2
]}

机构：

[1] Univ Lyon 1, IRCELYON, CNRS, F-69626 Villeurbanne, France

[2] AIST, Tsukuba, Ibaraki 3058565, Japan

来源：

CATALYSIS TODAY | 2008年 / 130卷 / 01期

关键词：

thiophenic compounds; desulfurization; alkylation; heteropolyacids; gasoline;

D O I：

10.1016/j.cattod.2007.08.017

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In FCC gasoline, the alkylation of sulfur compounds with olefins present in the feed, followed by a distillation to eliminate them, could be a good alternative for the desulfurization. Acidic materials (zeolites, supported acids) were screened for the alkylation of 3-methylthiophene (3MT) with 2-methyl-2-butene (2M2B), used as model reaction. Results showed that the silica-supported 12-phosphotungstic (HPW) and 12-silicotungstic (HSiW) acids are the best catalysts among zeolites and other supported acids. The performance of 40HPW/SiO2 was then studied in a real feed of FCC gasoline. The production of heavier sulfur compounds was obtained with high conversion, and this catalyst still showed some activity after 50 h of reaction, as compared to the silica-supported phosphoric acid (SPA-11), used as a reference. Moreover the deactivation could be reduced by increasing the reaction temperature. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：190 / 194

页数：5

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