Ultrastrong Alkali-Resisting Lanthanide-Zeolites Assembled by [Ln60] Nanocages

Zeolites, as one of the most important porous materials, are most widely utilized in sorbents, catalysis, and ion-exchange fields. However, the multifunctional lanthanide-zeolites constructed exclusively by lanthanide ions and oxygen linkers are to our knowledge unknown hitherto. Herein, we, for the first time, report the unique structure and multifunctions of lanthanide zeolites (1.Gd, 1.Tb, 1.Dy), featuring 60 nuclear [Ln(60)] nanocages as building blocks and ultrastrong alkali-resisting. These compounds possess extremely high stability and still retain single crystallinity after treatment in boiling water, 0.1 M HCl, and 20 M NaOH aqueous solutions. Magnetic studies revealed 1.Gd has large magnetocaloric effect with -Delta S-m(max) = 66.5 J kg(-1) K-1, falling among the largest values known to date. Importantly, these lanthanide-zeolites themselves can efficiently catalyze the cydoaddition of CO2 with epoxides under mild conditions. Our finding extends the conventional zeolites to lanthanide counterparts, opening a new space for seeking novel and/or multifunctional zeolites.