Formation of surface basicity through the decomposition of alkali metal nitrates on γ-Al2O3

被引：6

作者：

Shen, JY ^{[1
]}

Tu, M

Hu, C

Chen, Y

机构：

[1] Nanjing Univ, Dept Chem, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

来源：

LANGMUIR | 1998年 / 14卷 / 10期

关键词：

D O I：

10.1021/la971001g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The gamma-Al2O3-supported alkali metal nitrate samples with various loadings were prepared by the incipient wetness impregnation method. Differential thermal analysis (DTA), X-ray diffraction (XRD), and magic-angle-spinning (MAS) Na-23 and Al-27 NMR were conducted regarding the decomposition of supported nitrates and the chemical states of alkali metals on gamma-Al2O3. The surface basicity and acidity of these samples evacuated at different temperatures were determined by microcalorimetric adsorption of CO2 and NH3, which were correlated to the states of alkali metals, as revealed by the various physical characterizations.

引用

页码：2756 / 2760

页数：5

共 25 条

[1] MULTINUCLEAR STUDIES OF ALUMINUM COMPOUNDS [J].

AKITT, JW .

PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY, 1989, 21 :1-149

[2]

[Anonymous], 1989, Catal Today, V5, P1, DOI [10.1016/0920-5861(89)80034-3, DOI 10.1016/0920-5861(89)80034-3]

[3] MICROCALORIMETRIC STUDY OF THE ACIDITY AND BASICITY OF METAL-OXIDE SURFACES [J].

AUROUX, A ;

GERVASINI, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1990, 94 (16) :6371-6379

[4] APPLICATIONS OF ADSORPTION MICROCALORIMETRY TO THE STUDY OF HETEROGENEOUS CATALYSIS [J].

CARDONAMARTINEZ, N ;

DUMESIC, JA .

ADVANCES IN CATALYSIS, 1992, 38 :149-244

[5] ON THE COMPENSATION EFFECT IN ACID-BASE CATALYZED-REACTIONS ON ZEOLITES [J].

CORMA, A ;

LLOPIS, F ;

MONTON, JB ;

WELLER, S .

JOURNAL OF CATALYSIS, 1993, 142 (01) :97-109

[6]

Dean J.A., 1985, LANGES HDB CHEM, V13

[7] MICROCALORIMETRIC AND CATALYTIC STUDIES OF THE ACIDIC CHARACTER OF MODIFIED METAL-OXIDE SURFACES .1. DOPING IONS ON ALUMINA, MAGNESIA, AND SILICA [J].

GERVASINI, A ;

BELLUSSI, G ;

FENYVESI, J ;

AUROUX, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (14) :5117-5125

[8] THERMODYNAMICS OF ADSORBED MOLECULES FOR A NEW ACID-BASE TOPOCHEMISTRY OF ALUMINA [J].

GERVASINI, A ;

AUROUX, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1993, 97 (11) :2628-2639

[9] OXIDATIVE METHYLATION OF TOLUENE WITH METHANE OVER SUPERBASIC CATALYSTS - A SELECTIVE ROUTE TO STYRENE AND ETHYLBENZENE THROUGH ALTERNATIVE FEEDSTOCKS [J].

KHAN, AZ ;

RUCKENSTEIN, E .

JOURNAL OF CATALYSIS, 1993, 143 (01) :1-21

[10]

KOSTARENKO NS, 1986, REACT KINET CATAL LE, V30, P375

← 1 2 3 →