A high-pressure and high-temperature gas-loading system for the study of conventional to real industrial sized samples in catalysed gas/solid and liquid/solid reactions
Résumé
A high pressure-high temperature gas loading system (GLS) is described for combined in operando X-ray diffraction and mass spectrometry investigations during catalyzed gas/solid or liquid/solid reactions. The pressure cell consists of a single crystal sapphire tube which serves as both high pressure container and reaction cell up to 6mm inner diameter. The system can operate in two different configurations either under static high pressure or dynamic pressurized flow. The transportable reaction cell can be filled under inert atmosphere inside a glove box enabling studies with oxygen-sensitive compounds to be conducted. The five main benefits of this system can be summarised as follows: i) the temperature, pressure and gas flow ranges of 25-1000°C, 10-3 mbar - 200 bar and 0-1 L.min 1, respectively, ii) the combination of different gases, iii) the flexibility of the cell design, iv) the full rotation of the pressurized cell and v) the combination of X-ray diffraction and mass spectrometry as analytical tools. These five key points open new possibilities for studying catalysts or compounds evolutions from a fundamental point of view to industrial applications, both cases in operando conditions.
Origine : Fichiers produits par l'(les) auteur(s)