PB-207 NMR DETECTION OF SPINNING-INDUCED TEMPERATURE-GRADIENTS IN MAS ROTORS

被引：76

作者：

MILDNER, T ^{[1
]}

ERNST, H ^{[1
]}

FREUDE, D ^{[1
]}

机构：

[1] UNIV LEIPZIG,GRENZFLACHENPHYS ABT,D-04103 LEIPZIG,GERMANY

来源：

SOLID STATE NUCLEAR MAGNETIC RESONANCE | 1995年 / 5卷 / 03期

关键词：

MAS NMR; TEMPERATURE GRADIENT; CHEMICAL SHIFT THERMOMETER; LEAD NITRATE;

D O I：

10.1016/0926-2040(95)01189-1

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 position of the Pb-207 MAS NMR resonance from Pb(NO3)(2) at a given inlet temperature of the spinning air depends on the rotation frequency, the diameter and geometry of the rotor, the position of the sample in the rotor, and the bearing air pressure. Taking these effects into consideration, the use of Pb(NO3)(2) as a chemical shift thermometer gives a temperature accuracy of 0.1 K for a very small sample and a MAS-induced temperature gradient of 4 K for a 4 mm sample spun at 10 kHz.

引用

页码：269 / 271

页数：3

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