Fig. 4: Structural resistances of USTC-700 under various conditions.
From: A squarate-pillared titanium oxide quantum sieve towards practical hydrogen isotope separation
a Temperature-dependent PXRD patterns collected in a wide temperature range (10 K to 548 K) showing a good thermal stability and a zero thermal expansion property of the USTC-700 structure. b A good chemical stability of USTC-700 indicated by PXRD patterns collected on the samples treated under some previously unachievable conditions for Ti-framework compounds. c Mechanical stability reflected by the normalized crystallinity as a function of applied pressure on the sample pellet. Inset, PXRD pattern comparison between the pristine sample and the sample after compression at a pressure of 24 tonne cm−2. d A good radiolytic stability was supported by carbon dioxide (CO2) sorption isotherms of USTC-700 samples exposed to gamma irradiation with various doses (fadeless symbols: adsorption branches; transparent symbols: desorption branches). Inset, PXRD patterns collected on samples correspond to each gamma irradiation dose.
