Optimization of the preparation method of HSO3-functionalized MCM-41 solid catalysts

被引：25

作者：

Boveri, M ^{[1
]}

Aguilar-Pliego, J ^{[1
]}

Pérez-Pariente, J ^{[1
]}

Sastre, E ^{[1
]}

机构：

[1] CSIC, Inst Catalisis & Petroleoquim, E-28049 Madrid, Spain

来源：

CATALYSIS TODAY | 2005年 / 107-08卷

关键词：

MCM-41; extraction; grafting; HS-MCM-41; HSO3-MCM-41;

D O I：

10.1016/j.cattod.2005.07.033

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this work, a systematic study of the acid extraction of the surfactant present in MCM-41 mesoporous materials was carried out. Two organic solvent/acid mixtures were used at various temperatures and for different periods of time. Propylthiol groups were subsequently grafted onto the surface by reacting the mesoporous silica with 3-mercaptopropyltrimethoxysilane. The resulting organic matter loading is compared with the one yielded by grafting of calcined samples. Acid catalysts were obtained by oxidation of the -SH groups to the -SO3H form. The catalysts were tested for alkylation of benzene with 1-dodecene. These materials were characterized by means of XRD, themogravimetric analysis, N-2 adsorption-desorption isotherms, organic elemental analysis and acid titration. The acid extraction of the surfactant allowed the preparation of catalysts with a high concentration of active centers. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：868 / 873

页数：6

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