Acid-base properties of MgCuAl mixed oxides

被引：21

作者：

Casenave, S

Martinez, H

Guimon, C

Auroux, A

Hulea, V

Dumitriu, E

机构：

[1] LPCM UMR 5624, F-64053 Pau 09, France

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

[3] Tech Univ Iasi, Catalysis Lab, Iasi 6600, Romania

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2003年 / 72卷 / 01期

关键词：

acidity; basicity; cyclohexanol conversion; layered double hydroxides; MgCuAl mixed oxides; microcalorimetry; XPS;

D O I：

10.1023/A:1023980005672

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

MgCuAl layered double hydroxides (LDHs) with a hydrotalcite like structure containing different proportions of Mg2+ and Cu2+ cations have been prepared. Thermogravimetry and X-ray diffraction data indicated that the transformation of LDH into mixed oxides is effective after calcination at 723 K, irrespective of the composition. The acid-base properties of these mixed oxides have been investigated using adsorption microcalorimetry and X-ray photoelectron spectroscopy with NH3 (for acidity) and SO2 (for basicity) as probe molecules. Their catalytic behaviour for the conversion of cyclohexanol has been tested. The acid-base properties and the selectivity of catalysts has been related to their composition.

引用

收藏

页码：191 / 198

页数：8

相关论文

共 15 条

[1] OXIDATION ACTIVITY AND ACID-BASE PROPERTIES OF SNO-2-BASED BINARY CATALYSTS .1. SNO-2-V-2-O-5 SYSTEM [J].

AI, M .

JOURNAL OF CATALYSIS, 1975, 40 (03) :318-326

[2] Synthesis of methylamines from CO2, H2 and NH3 over Cu-Mg-Al mixed oxides [J].

Auer, SM ;

Gredig, SV ;

Köppel, RA ;

Baiker, A .

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1999, 141 (1-3) :193-203

[3] CYCLOHEXANOL CONVERSION AS A TEST OF THE ACID-BASE PROPERTIES OF METAL-OXIDE CATALYSTS [J].

BEZOUHANOVA, CP ;

ALZIHARI, MA .

CATALYSIS LETTERS, 1991, 11 (02) :245-248

[4] Nature and strength of acid sites in HY zeolites: a multitechnical approach [J].

Boreave, A ;

Auroux, A ;

Guimon, C .

MICROPOROUS MATERIALS, 1997, 11 (5-6) :275-291

[5] 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

[6] HYDROTALCITE-TYPE ANIONIC CLAYS: PREPARATION, PROPERTIES AND APPLICATIONS [J].

Cavani, F. ;

Trifiro, F. ;

Vaccari, A. .

CATALYSIS TODAY, 1991, 11 (02) :173-301

[7] Prins condensation of isobutylene and formaldehyde over Fe-silicates of MFI structure [J].

Dumitriu, E ;

Hulea, V ;

Fechete, I ;

Catrinescu, C ;

Auroux, A ;

Lacaze, JF ;

Guimon, C .

APPLIED CATALYSIS A-GENERAL, 1999, 181 (01) :15-28

[8] Study of the reducibility of copper in CuO-ZnO catalysts by temperature-programmed reduction [J].

Fierro, G ;

LoJacono, M ;

Inversi, M ;

Porta, P ;

Cioci, F ;

Lavecchia, R .

APPLIED CATALYSIS A-GENERAL, 1996, 137 (02) :327-348

[9] Microcalorimetric studies of the surface reactivity of pollutant gas atmospheres on supported SnO2 and Ga2O3 catalysts [J].

Gergely, B ;

Rédey, A ;

Guimon, C ;

Gervasini, A ;

Auroux, A .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 1999, 56 (03) :1233-1241

[10] XPS study of the adsorption of SO2 and NH3 over supported tin dioxide catalysts used in de-NOx catalytic reaction [J].

Guimon, C ;

Gervasini, A ;

Auroux, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (42) :10316-10325