Projects per year
Abstract
Cu-BTC metal-organic framework (HKUST-1) was evaluated as the model material for CO2 capture from flue gas streams. This paper presents an optimised hydrothermal synthesis of HKUST-1 and an analysis of water stability of HKUST-1. Substantial improvements of the hydrothermal synthesis process of HKUST-1 are shown to increase the quantitative yield up to 89.4% at 100°C. Single-component adsorption experiments were carried out under conditions relevant for flue gases adsorption (45-60°C, 0-1barG) to evaluate the performance of HKUST-1 in terms of adsorption capacity, showing that the amount adsorbed of water can reach up to 21.7mmolg-1, about one order of magnitude higher than CO2 (1.75mmolg-1) and almost two orders of magnitude higher than N2 (0.17mmolg-1). The hydration process of HKUST-1 framework was investigated using dynamic vapour adsorption under the flue gas emitting conditions. HKUST-1 is sensitive to humid streams and dynamic deformation of its porous structure takes place at 40-50°C and various relative humidity values, leading to the irreversible decomposition of HKUST-1 framework and the consequent deterioration in its adsorption capacity. Under humid conditions, water displaces the organic linkers from the copper centres causing the collapse of HKUST-1 framework. These results provide fundamental knowledge to enable future material design for the modification of the hydrophilic nature of copper sites in HKUST-1 to improve its moisture stability.
Original language | English |
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Pages (from-to) | 669-677 |
Number of pages | 9 |
Journal | Chemical Engineering Journal |
Volume | 281 |
Early online date | 9 Jul 2015 |
DOIs | |
Publication status | Published - 1 Dec 2015 |
Keywords
- Flue gas
- HKUST-1
- Hydrothermal synthesis
- Metal-organic frameworks (MOFs)
- Stability
- Water vapour adsorption
Fingerprint
Dive into the research topics of 'Mapping the Cu-BTC metal-organic framework (HKUST-1) stability envelope in the presence of water vapour for CO2 adsorption from flue gases'. Together they form a unique fingerprint.Projects
- 1 Finished
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Early Career Fellowship - COMPACT Manufacturing Platform
Torrente Murciano, L. (PI)
Engineering and Physical Sciences Research Council
31/10/14 → 30/10/19
Project: Research council
Equipment
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MC2-Electron Microscopy (EM)
Material and Chemical Characterisation (MC2)Facility/equipment: Technology type
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MC2-Thermal and Polymer Analysis
Material and Chemical Characterisation (MC2)Facility/equipment: Technology type