Optimisation of gas phase deposition of titanium on mesoporous silica SBA15: active site counting and catalytic activity in cyclohexene epoxidation

被引：22

作者：

Chiker, F ^{[1
]}

Nogier, JP ^{[1
]}

Launay, E ^{[1
]}

Bonardet, JL ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, UMR 7142, Lab Syst Interfaciaux & Echelle Nanometr, F-75252 Paris 05, France

来源：

APPLIED CATALYSIS A-GENERAL | 2004年 / 259卷 / 02期

关键词：

SBA15; mesoporous catalyst; titanium;

D O I：

10.1016/j.apcata.2003.09.023

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：

New structured mesoporous catalysts TiSBA15 were synthesised by grafting titanium atoms on the pore surface of various SBA15 materials by means of titanium tetrachloride in the gas phase. Site counting allowed us to optimise the experimental conditions in order to get the best selectivity and reactivity in the epoxidation of alkenes by various hydroperoxides in mild conditions (343-353 K). The silica based materials lead, in any case, to the selective formation of the epoxides with a high level of conversion over four catalytic runs. (C) 2003 Elsevier B.V. All rights reserved.

引用

收藏

页码：153 / 162

页数：10

相关论文

共 14 条

[1] Solution-phase grafting of titanium dioxide onto the pore surface of mesoporous silicates: Synthesis and structural characterization [J].

Aronson, BJ ;

Blanford, CF ;

Stein, A .

CHEMISTRY OF MATERIALS, 1997, 9 (12) :2842-2851

[2]

Barr DB, 1995, ACTA OPHTHALMOL SCAN, V73, P1

[3] Green and selective epoxidation of alkenes catalysed by new TiO2-SiO2SBA mesoporous solids [J].

Chiker, F ;

Launay, F ;

Nogier, JP ;

Bonardet, JL .

GREEN CHEMISTRY, 2003, 5 (03) :318-322

[4] New Ti-SBA mesoporous solids functionnalized under gas phase conditions: characterisation and application to selective oxidation of alkenes [J].

Chiker, F ;

Nogier, JP ;

Launay, F ;

Bonardet, JL .

APPLIED CATALYSIS A-GENERAL, 2003, 243 (02) :309-321

[5] Titania-silica: A model binary oxide catalyst system [J].

Davis, RJ ;

Liu, ZF .

CHEMISTRY OF MATERIALS, 1997, 9 (11) :2311-2324

[6] Preparation and in-situ spectroscopic characterization of molecularly dispersed titanium oxide on silica [J].

Gao, XT ;

Bare, SR ;

Fierro, JLG ;

Banares, MA ;

Wachs, IE .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (29) :5653-5666

[7] UV-visible diffuse reflectance spectroscopy of zeolite-hosted mononuclear titanium oxide species [J].

Klaas, J ;

SchulzEkloff, G ;

Jaeger, NI .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (08) :1305-1311

[8] Homogeneity of titania-silica mixed oxides: On UV-DRS studies as a function of titania content [J].

Klein, S ;

Weckhuysen, BM ;

Martens, JA ;

Maier, WF ;

Jacobs, PA .

JOURNAL OF CATALYSIS, 1996, 163 (02) :489-491

[9] Incorporation of titanium into mesoporous silica molecular sieve SBA-15 [J].

Luan, ZH ;

Maes, EM ;

van der Heide, PAW ;

Zhao, DY ;

Czernuszewicz, RS ;

Kevan, L .

CHEMISTRY OF MATERIALS, 1999, 11 (12) :3680-3686

[10] Structure-functionality relationships of grafted Ti-MCM41 silicas. Spectroscopic and catalytic studies [J].

Marchese, L ;

Gianotti, E ;

Dellarocca, V ;

Maschmeyer, T ;

Rey, F ;

Coluccia, S ;

Thomas, JM .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1999, 1 (04) :585-592