CHARACTERIZATION OF POROUS SOLIDS BY NMR

被引：384

作者：

STRANGE, JH ^{[1
]}

RAHMAN, M ^{[1
]}

SMITH, EG ^{[1
]}

机构：

[1] UNILEVER RES,PORT SUNLIGHT LAB,PORT SUNLIGHT,ENGLAND

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.71.3589

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new simple and rapid method to determine pore size distributions is described which employs a simple nuclear magnetic resonance (NMR) apparatus. The method exploits the depression of the melting point of a crystalline solid confined within a pore, which is dependent on the pore diameter. The melting point distribution is determined by analyzing the NMR signal as a function of temperature. The technique is demonstrated by application to porous silicas and is shown to give pore size distributions comparable to those obtained by the conventional gas desorption method for pore sizes in the range 5 to 50 nm.

引用

页码：3589 / 3591

页数：3

共 11 条

[1]

AWASCHALON DD, 1987, PHYS REV B, V35, P6779

[2] EXPERIMENTAL-TECHNIQUES FOR STUDYING ORDER ON DIFFERENT LENGTH SCALES IN MICELLAR LIQUID-CRYSTALS [J].