Absence of the Structural Phase Transition in Ammonia Borane Dispersed in Mesoporous Silica: Evidence of Novel Thermodynamic Properties

被引：61

作者：

Paolone, Annalisa ^{[1
,2
]}

Palumbo, Oriele ^{[1
]}

Rispoli, Pasquale

Cantelli, Rosario

Autrey, Tom ^{[3
]}

Karkamkar, Abhijeet ^{[3
]}

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, CNISM, I-00185 Rome, Italy

[2] CNR INFM, Lab Reg SuperMAT, Salerno, Italy

[3] Pacific NW Natl Lab, Richland, WA 99352 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 24期

关键词：

HYDROGEN STORAGE PROPERTIES; ANELASTIC SPECTROSCOPY; THERMAL-DECOMPOSITION; HIGH-PRESSURE; DYNAMICS; NMR; BH3NH3;

D O I：

10.1021/jp902341s

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 occurrence of the structural phase transition of NH3BH3 dispersed in mesoporous silica was studied by anelastic spectroscopy and differential scanning calorimetry. Both measurements indicate that the structural phase transition is suppressed in the sample in which ammonia borane covers only the internal surface of the scaffold. Such a drastic change in the main features of this compound indicates that novel thermodynamic properties can be obtained by means of the fine dispersion of NH3BH3 at a monolayer level.

引用

页码：10319 / 10321

页数：3

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