Kinetics and mechanism of liquid-phase alkylation of 3-methylthiophene with 2-methyl-2-butene over a solid phosphoric acid

被引：34

作者：

Belliere, Virginie

Lorentz, Chantal

Geantet, Christophe

Yoshimura, Yuji

Laurenti, Dorothe

Vrinat, Michel

机构：

[1] Inst Rech Catalyse, F-69626 Villeurbanne, France

[2] Natl Inst Mat & Chem Res, Tsukuba, Ibaraki 3058565, Japan

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2006年 / 64卷 / 3-4期

关键词：

heterogeneous catalysis; solid phosphoric acid; alkylation; kinetics; desulfurization; gasoline; in situ NMR;

D O I：

10.1016/j.apcatb.2005.11.011

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：

Drastic regulations concerning sulfur content in fuels require the development of new processes in the refineries. In the case of gasoline, AOTS process based on the alkylation of thiophene by butenes was proposed. In the present work, we attempted to describe the mechanism of such a reaction with model molecules. Liquid-phase alkylation of 3-methylthiophene with 2-methyl-2-butene was performed on supported phosphoric acid. It is shown that this reaction is mainly selective to monoalkylation products. The kinetics is following an Eley-Rideal law and the reaction intermediate seems to be an ester of phosphoric acid or polyphosphate. (c) 2006 Published by Elsevier B.V.

引用

页码：254 / 261

页数：8

共 23 条

[11] Hydrodesulfurization of catalytic cracked gasoline .1. Inhibiting effects of olefins on HDS of alkyl(benzo)thiophenes contained in catalytic cracked gasoline [J].