With the exception of the first cycle, where nucleation significantly impacts the process, the mass of captured CO 2 follows an almost identical linear relation across all experiments conducted under identical conditions (cf. Fig. ). Remarkably, even after 18 cycles the same relation can be observed, indicating a highly robust and stable process across numerous capture-regeneration cycles. The minor deviations observed between the second and later cycles can be attributed to imperfect process control, particularly variations in the annealing periods occurring between cycles, when the reactor was maintained at a low temperature but not pressurized.