Fig. 10

XRD patterns of 229-5 during RH cycle (C). At high RH, shown with KHSO₄ reference and overlaid onto pattern at initial (15%) RH, diminishing potassium bisulfate peaks can be seen. At the final RH of 50%, also overlaid onto pattern at initial (15%) RH, inverted triangles highlight peaks that have reappeared after diminishing at high RH, with close-up to better show differences in intensities and some slight shifts