DEHYDRATION OF (DPA) VPI-5 - INSITU VARIABLE TEMPERATURE MULTINUCLEAR NMR INVESTIGATIONS

被引：16
作者：
MAISTRIAU, L
GABELICA, Z
DEROUANE, EG
机构：
来源：
APPLIED CATALYSIS A-GENERAL | 1992年 / 81卷 / 01期
关键词：
ALPO4-8; ALUMINUM; DEHYDRATION; NUCLEAR MAGNETIC RESONANCE; PHOSPHORUS; VPI-5;
D O I：
10.1016/0926-860X(92)80261-A
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：
In situ variable temperature P-31 and Al-27-NMR provide choice techniques to follow the dehydration of VPI-5. Two samples were characterized by these methods. The first sample (VPI-5-A) is transformed into AlPO4-8 as soon as water is removed by heating while the second one (VPI-5-B) keeps the VFI topology, even after complete dehydration. The relative stability of the structures can be interpreted in terms of lattice defect density.
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页码：67 / 80
页数：14
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