STRUCTURAL DEFECTS CAUSE DIFFERENT RATES OF PHASE-TRANSFORMATION OF THE MOLECULAR-SIEVES TBA-VPI-5 AND DPA-VPI-5 INTO ALPO(4)-8

被引：11

作者：

HE, HY

BARR, TL

KLINOWSKI, J

机构：

[1] UNIV CAMBRIDGE,DEPT CHEM,CAMBRIDGE CB2 1EW,ENGLAND

[2] UNIV WISCONSIN,DEPT MAT,MILWAUKEE,WI 53201

[3] UNIV WISCONSIN,SURFACE STUDIES LAB,MILWAUKEE,WI 53201

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 35期

关键词：

D O I：

10.1021/j100086a030

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：

Chemical analysis, IR, and ESCA reveal that the framework of the aluminophosphate molecular sieve DPA-VPI-5 contains randomly distributed phosphorus defects, while the structure of TBA-VPI-5 is relatively perfect. The microstructural difference is responsible for the different rates of phase transformation of DPA-VPI-5 and TBA-VPI-5 to AlPO4-8. The defects enhance the phase transformation of DPA-VPI-5 to AlPO4-8 in the absence of adsorbed water.

引用

页码：8775 / 8779

页数：5

共 30 条

[1] THE CONFINEMENT OF BUCKMINSTERFULLERENE IN ONE-DIMENSIONAL CHANNELS [J].