METHODS USING LIGAND INSERTION MECHANISM FOR AMMONIA CAPTURE AND STORAGE IN METAL-ORGANIC FRAMEWORKS
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Aug 8, 2024
app pub date -
Feb 6, 2024
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Feb 7, 2023
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A porous metal-organic framework M(dicarboxylate), where M=a divalent transition metal ion or alkaline earth metal ion, and (dicarboxylate)=a dicarboxylate linker with a layered two-dimensional structure with paddlewheel-type metal nodes forming a three-dimensional structure with rhombic channels along a c axis. The M(dicarboxylate) family of frameworks, where M=Cu, Fe, Cr, Mg, Ca, Mn, Co, Ni, Zn, Mo or Cd and (dicarboxylate)=trans-1,4-cyclohexanedicarboxylate, 1,4-benzenedicarboxylate, 4,4′-biphenyldicarboxylate, or 2,3,5,6-tetrafluorobenzenedicarboxylate, reversibly binds ammonia via cooperative insertion into its metal-carboxylate bonds to form a dense, one-dimensional coordination polymer that has rapid adsorption kinetics, a comparatively large working capacity and minimal expansion upon ammonia capture.
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