Abstract
Adsorption-driven heat transfer is potentially a sustainable technology to decarbonise heating and cooling. However, the development of high-performance adsorbent-adsorbate working pairs remain extremely challenging. Here, we report a metal-organic framework/water working pair that can operate at an ultra-low driving temperature (62 °C), showing a high coefficient of performance (COP) of 0.8 for cooling. The desirable features of MFM-300(M) (M = Al, Fe, Cr, V) for water adsorption have been elucidated by combined crystallographic and spectroscopic techniques. In situ neutron powder diffraction reveals the structural evolution of the MFM-300-D2O system via the direct observation of the location of D2O at different stages of adsorption. Host-guest binding dynamics have been interrogated by in situ solid-state nuclear magnetic resonance spectroscopy and inelastic neutron scattering combined with modelling. This system promotes renewable low-grade thermal energy rather than the use electricity to drive cooling.
Original language | English |
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Journal | American Chemical Society. Journal |
Publication status | Accepted/In press - 18 Mar 2025 |
Keywords
- Metal-Organic Framework
- Adsorption-Driven Cooling
- Neutron Diffraction
- Structure
- Inelastic Neutron Scattering