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Application of calcined Mg-Al hydrotalcites for Michael additions: an investigation of catalytic activity-and acid-base properties

被引：171
作者：
Prescott, HA
Li, ZJ
Kemnitz, E
Trunschke, A
Deutsch, J
Lieske, H
Auroux, A
机构：
[1] Humboldt Univ, Inst Chem, D-12489 Berlin, Germany
[2] Inst Angew Chem Berlin Adlershof, D-12489 Berlin, Germany
[3] Inst Rech Catalyse, CNRS, UPR 5401, F-69626 Villeurbanne, France
来源：
JOURNAL OF CATALYSIS | 2005年 / 234卷 / 01期
关键词：
hydrotalcite; Mg-Al mixed oxide; acid-base properties; solid base catalyst; Michael addition;
D O I：
10.1016/j.jcat.2005.06.004
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：
Mg-Al hydrotalcite catalysts with different Mg/Al molar ratios (0.6, 1.4, 2.2, 3.0) were calcined and tested in liquid-phase Michael additions at room temperature. The catalysts and pure oxides (MgO and Al2O3) were characterized by XRD, XPS, N-2 adsorption experiments, Al-27 MAS NMR, and TG-DTA. The acid-base properties of the samples were investigated by (a) FTIR spectroscopy after pyridine and CO2 adsorption and (b) microcalorimetry with CO2 and benzoic acid. Both acid sites (Lewis) and base sites (Lewis and Bronsted) are present on the surface of calcined hydrotalcites. The calcined hydrotalcites (CHT) catalyzed the Michael additions of CH-acid compounds to methyl vinyl ketone to give high product yields with 100% selectivity; the Al-rich sample exhibited the highest activity. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码：119 / 130
页数：12
相关论文
共 49 条
[1]   SURFACE CHARACTERIZATION OF AMORPHOUS ALUMINA AND ITS CRYSTALLIZATION PRODUCTS [J].
ABBATTISTA, F ;
DELMASTRO, S ;
GOZZELINO, G ;
MAZZA, D ;
VALLINO, M ;
BUSCA, G ;
LORENZELLI, V ;
RAMIS, G .
JOURNAL OF CATALYSIS, 1989, 117 (01) :42-51
[2]   BA(OH)2 AS THE CATALYST IN ORGANIC-REACTIONS .18. INFLUENCE OF THE MICROCRYSTALLINE STRUCTURE AND THE NATURE OF ACTIVE-SITES ON CATALYTIC ACTIVITY [J].
BARRIOS, J ;
ROJAS, R ;
ALCANRARA, AR ;
SINISTERRA, JV .
JOURNAL OF CATALYSIS, 1988, 112 (02) :528-542
[3]   A proline-catalyzed asymmetric Robinson annulation reaction [J].
Bui, T ;
Barbas, CF .
TETRAHEDRON LETTERS, 2000, 41 (36) :6951-6954
[4]   INFRARED SPECTROSCOPIC IDENTIFICATION OF SPECIES ARISING FROM REACTIVE ADSORPTION OF CARBON OXIDES ON METAL-OXIDE SURFACES [J].
BUSCA, G ;
LORENZELLI, V .
MATERIALS CHEMISTRY, 1982, 7 (01) :89-126
[5]   The surface acidity of solid oxides and its characterization by IR spectroscopic methods. An attempt at systematization [J].
Busca, G .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1999, 1 (05) :723-736
[6]   Acid-base properties of Mg-Ni-Al mixed oxides using LDH as precursors [J].
Casenave, S ;
Martinez, H ;
Guimon, C ;
Auroux, A ;
Hulea, V ;
Cordoneanu, A ;
Dumitriu, E .
THERMOCHIMICA ACTA, 2001, 379 (1-2) :85-93
[7]   Acid-base properties of MgCuAl mixed oxides [J].
Casenave, S ;
Martinez, H ;
Guimon, C ;
Auroux, A ;
Hulea, V ;
Dumitriu, E .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2003, 72 (01) :191-198
[8]   HYDROTALCITE-TYPE ANIONIC CLAYS: PREPARATION, PROPERTIES AND APPLICATIONS [J].
Cavani, F. ;
Trifiro, F. ;
Vaccari, A. .
CATALYSIS TODAY, 1991, 11 (02) :173-301
[9]   The first example of Michael addition catalysed by modified Mg-Al hydrotalcite [J].
Choudary, BM ;
Kantam, ML ;
Reddy, CRV ;
Rao, KK ;
Figueras, F .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1999, 146 (1-2) :279-284
[10]   Increasing the basicity and catalytic activity of hydrotalcites by different synthesis procedures [J].
Climent, MJ ;
Corma, A ;
Iborra, S ;
Epping, K ;
Velty, A .
JOURNAL OF CATALYSIS, 2004, 225 (02) :316-326
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