SILICON SPECIES IN A SAPO-5 MOLECULAR-SIEVE

被引：17

作者：

WANG, R

LIN, CF

HO, YS

LEU, LJ

CHAO, KJ

机构：

[1] NATL TSING HUA UNIV, DEPT CHEM, HSINCHU 30043, TAIWAN

[2] CHINESE PETR CORP, REFINING & MFG RES CTR, CHIAYI 60036, TAIWAN

来源：

APPLIED CATALYSIS | 1991年 / 72卷 / 01期

关键词：

SILICON; MAGIC ANGLE SPINNING-NUCLEAR MAGNETIC RESONANCE; ELECTRON PROBE MICROANALYSIS; BRONSTED ACIDITY; SAPO-5;

D O I：

10.1016/0166-9834(91)85026-R

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 incorporation of silicon into a AlPO4-5 molecular sieve modifies the acidity of the host without disrupting its microporous structure. The amount of silicon substitution in AlPO4-5 was found to be dependent on the silicon source and the template used in the synthesis condition. The silicon substitution of phosphorous was studied by Si-29 magic angle spinning-nuclear magnetic resonance and electron probe microanalysis. The strength and concentration of the Bronsted acidity of SAPO-5 were also studied by the temperature-programmed desorption of ammonia and IR spectroscopy.

引用

页码：39 / 49

页数：11

共 17 条

[1] AL-27, P-31, AND SI-29 MAS NMR-STUDIES OF THE SILICOALUMINOPHOSPHATE MOLECULAR-SIEVE SAPO-5 [J].