Compositionally Enhanced Flexibility in a Ga-Rich Zeolite Affords Unusual Structural Changes via Alkali Ion Exchange SeoSung Man AhnNak Ho ShinJiho ChoSung June CamblorMiguel A. HongSuk Bong 2015 Compositionally Enhanced Flexibility in a Ga-Rich Zeolite Affords Unusual Structural Changes via Alkali Ion Exchange