Thermodynamics of the structural transition in metal-organic frameworks

被引：16

作者：

Rodriguez, J. ^{[1
]}

Beurroies, I. ^{[1
]}

Coulet, M. -V. ^{[1
]}

Fabry, P. ^{[2
]}

Devic, T. ^{[2
]}

Serre, C. ^{[2
]}

Denoyel, R. ^{[1
]}

Llewellyn, P. L. ^{[1
]}

机构：

[1] Aix Marseille Univ, CNRS, MADIREL UMR 7246, Campus St Jerome, F-13397 Marseille 20, France

[2] Univ Versailles St Quentin, Inst Lavoisier Versailles, 45 Ave Etats Unis, F-78035 Versailles, France

来源：

DALTON TRANSACTIONS | 2016年 / 45卷 / 10期

关键词：

PRESSURE WATER INTRUSION; COLLOIDAL DAMPER; HEAT-TRANSFER; ENERGY; CALORIMETRY; SUSPENSION; ZEOLITE; SOLIDS; MIL-53; PORES;

D O I：

10.1039/c5dt03591k

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A thermodynamic study of the structural large-pore (LP) to narrow pore (NP) transition in various Metal Organic Frameworks (MOFs) is presented. First, the pressure induced transition at a constant temperature is investigated using a Tian-Calvet microcalorimeter set-up equipped with a high pressure cell. This device permits simultaneous measurements of the mechanical work and heat associated with the LP -> NP transition. It is shown that MIL-53(Al) and MIL-53(Cr) have similar thermodynamic and mechanical behaviour whilst the MIL-47(V) system is characterized by much higher transition energy and mechanical work. Second, the temperature induced transition at ambient pressure is studied by means of differential scanning calorimetry (DSC) combined with X-ray absorption spectroscopy. This set-up enables one to follow simultaneously the structural changes associated with the phase transition detected by DSC. The MIL-53(Cr)-Br functionalized MOF is chosen here as a case study where both energetics and structural changes are discussed.

引用

页码：4274 / 4282

页数：9

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