Abstract: The invention is directed to a polymer-protected sorbent that is at least partially covered by, or in contact with, a polymer that acts to protect or shield the sorbent from the surrounding environment, such as a liquid or gas stream within which the sorbent is being used. The sorbent is a sorbent material made of sorbent particles and can be used to remove certain chemical species, such as trace level toxic species, from a given liquid or gas, such as a liquid or gas stream in an industrial process, such as wet flue gas desulfurization process or a wastewater treatment process.

Abstract: Metal-organic frameworks of the family M2 (2,5-dioxido-1,4-benzenedicarboxylate) wherein M=Mg, Mn, Fe, Co, Cu, Ni or Zn are a group of porous crystalline materials formed of metal cations or clusters joined by multitopic organic linkers that can be used to isolate individual gases from a stream of combined gases. This group of adsorbant materials incorporates a high density of coordinatively-unsaturated MII centers lining the pore surfaces. These adsorbents are particularly suited for selective carbon dioxide/monoxide adsorption via pressure swing adsorption near temperatures of 313 K since they selectively adsorb carbon dioxide at high pressures in the presence of hydrogen, and desorb carbon dioxide upon a pressure decrease. The redox-active FeII centers in Fe2(dobdc) can be used for the separation of O2 from N2 and other separations based on selective, reversible electron transfer reactions.