SI-29 AND AL-27 NMR-STUDY OF ZEOLITE FORMATION FROM ALKALI-LEACHED KAOLINITES - INFLUENCE OF THERMAL PREACTIVATION

被引：127

作者：

MADANI, A ^{[1
]}

AZNAR, A ^{[1
]}

SANZ, J ^{[1
]}

SERRATOSA, JM ^{[1
]}

机构：

[1] CSIC,INST CIENCIA MAT,CALLE SERRANO 115 BIS,E-28006 MADRID,SPAIN

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1990年 / 94卷 / 02期

关键词：

D O I：

10.1021/j100365a046

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：

The alkali treatment of kaolinites heated between 400 and 1000°C has been studied by NMR (29Si and 27Al signals), IR, and X-ray diffraction techniques. The dissolution of kaolinite samples produces Al(OH)4- and SiO44- species which participate in the zeolite germ formation. The nature of zeolites generated (hydroxysodalite, Na-A, and tetragonal Pt) varies with thermal activation of the starting silicates, but the prolonged leaching of the samples favors the transformation of initially formed phases into the most stable Pt zeolite. The synthesis of this compound (Si/Al > 1) requires the previous polymerization of dissolved silica species, and the amount of incorporated Si depends on the temperature of pretreatment of kaolinite. © 1990 American Chemical Society.

引用

页码：760 / 765

页数：6

共 50 条

[1] SI-29 AND AL-27 MAS NMR-STUDY OF ALKALI FELDSPARS
ZHOU, LD
GUO, JG
YUAN, HZ
LI, LY
[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY, 1994, 37 (09): : 1130 - 1137
[2] AL-27 AND SI-29 MAS NMR-STUDY OF ZEOLITE MCM-22
KOLODZIEJSKI, W
ZICOVICHWILSON, C
CORMA, A
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (18): : 7002 - 7008
[3] SI-29 AND AL-27 MAS NMR-STUDY OF A ZEOLITE SINGLE-CRYSTAL
STOCKER, M
[J]. ACTA CHEMICA SCANDINAVICA, 1993, 47 (09): : 935 - 936
[4] Thermal reactions of alkali-leached aluminosilicates studied by XRD and solid-state Al-27, Si-29 and Na-23 MAS NMR
MacKenzie, KJD
Meinhold, RH
Chakravorty, AK
Dafadar, MH
[J]. JOURNAL OF MATERIALS CHEMISTRY, 1996, 6 (05) : 833 - 841
[5] REVISITING KAOLINITE DEHYDROXYLATION - A SI-29 AND AL-27 MAS NMR-STUDY
LAMBERT, JF
MILLMAN, WS
FRIPIAT, JJ
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1989, 111 (10) : 3517 - 3522
[6] SI-29 AND AL-27 MAS NMR-STUDY OF THE DISTRIBUTION OF SI AND AL ATOMS IN VARIOUS FORMS OF SYNTHETIC ZEOLITE OMEGA
MASSIANI, P
FAJULA, F
FIGUERAS, F
SANZ, J
[J]. ZEOLITES, 1988, 8 (04): : 332 - 337
[7] AL-27 AND SI-29 MAS NMR-STUDY OF KAOLINITE THERMAL-DECOMPOSITION BY CONTROLLED RATE THERMAL-ANALYSIS
MASSIOT, D
DION, P
ALCOVER, JF
BERGAYA, F
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1995, 78 (11) : 2940 - 2944
[8] AL-27, SI-29, AND NA-23 MAS NMR-STUDY OF AN AL, SI ORDERED ALKALI FELDSPAR SOLID-SOLUTION SERIES
PHILLIPS, BL
KIRKPATRICK, RJ
HOVIS, GL
[J]. PHYSICS AND CHEMISTRY OF MINERALS, 1988, 16 (03) : 262 - 275
[9] AL-27 AND SI-29 NMR-STUDY OF SOL-GEL DERIVED ALUMINOSILICATES AND SODIUM ALUMINOSILICATES
IRWIN, AD
HOLMGREN, JS
JONAS, J
[J]. JOURNAL OF MATERIALS SCIENCE, 1988, 23 (08) : 2908 - 2912
[10] SI-29 AND AL-27 NMR-STUDY OF STEAMED FAUJASITES - EVIDENCE FOR NONFRAMEWORK TETRAHEDRALLY BOUND ALUMINUM
RAY, GJ
MEYERS, BL
MARSHALL, CL
[J]. ZEOLITES, 1987, 7 (04): : 307 - 310

← 1 2 3 4 5 →