Carbon dioxide selective adsorption within a highly stable mixed-ligand Zeolitic Imidazolate Framework

A new mixed-ligand Zeolitic Imidazolate Framework Zn-4(2-mbIm)(3)(bIm)(5)center dot 4H(2)O (named JUC-160, 2-mbIm = 2-methylbenzimidazole, bIm = benzimidazole and JUC = Jilin University China) was synthesized with a solvothermal reaction of Zn(NO3)(2)center dot 6H(2)O, bIm and 2-mbIm in DMF solution at 180 degrees C. Topological analysis indicated that JUC-160 has a zeolite GIS (gismondine) topology. Study of the gas adsorption and thermal and chemical stability of JUC-160 demonstrated its selective adsorption property for carbon dioxide, high thermal stability, and remarkable chemical resistance to boiling alkaline water and organic solvent for up to one week. (C) 2014 Elsevier B.V. All rights reserved.