raw · papers · ingested 2026-06-19
LiCl/vermiculite composite water sorbent for sorption cooling and heat storage
Source: https://www.sciencedirect.com/science/article/abs/pii/S1359431117302429
Gordeeva/Aristov group; paywalled, abstract-sourced (+ related kinetics paper).
Key findings
- LiCl dispersed in expanded vermiculite pores reacts with water to crystalline hydrates LiCl.nH2O (n=1,2), then transitions to solution: the chemisorption -> deliquescence/absorption sequence.
- Vermiculite is a low-cost natural macroporous matrix chosen to prevent salt agglomeration and improve mass transfer.
- Related “giant acceleration of sorption dynamics” (2022): vermiculite host dramatically speeds kinetics vs bulk salt (the key barrier for salt-only sorbents).
- Companion CaCl2-in-vermiculite SWS series.
- System example (LiCl/silica-gel chiller): COP 0.41, SCP 0.250 kW/kg with ~680 s (11 min) half-cycle, quantifying the cycle-time/SCP tradeoff.