Mona H Mohamed, Islam Elzeny, Joshua Samuel, Yimeng Huang, Ahmed S Helal, Mitchell Galanek, Wenqian Xu, So Yeon Kim, Tony Pham, Lenore Miller, Adam Hogan, Brian Space, Ju Li, Sameh K Elsaidi
Efficient separation of Kr from Kr/Xe mixtures is pivotal in nuclear waste management and dark matter research. Thus far, scientists have encountered a formidable challenge: the absence of a material with the ability to selectively adsorb Kr over Xe at room temperature. This study presents a groundbreaking transformation of the renowned metal-organic framework (MOF) CuBTC, previously acknowledged for its Xe adsorption affinity, into an unparalleled Kr-selective adsorbent. This achievement stems from an innovative densification approach involving systematic compression of the MOF, where the crystal size, interparticle interaction, defects, and evacuation conditions are synergistically modulated...
April 22, 2024: ACS Applied Materials & Interfaces