title: Carbonate-based zeolitic imidazolate framework for highly selective CO2 capture.
abstract: In this study, we report the formation of a new crystal structure, ZIF-CO3-1, which results from the reaction of Zn(2+), 2-methylimidazole, and carbonate. ZIF-CO3-1 can be synthesized solvothermally in N,N-dimethylformamide (DMF)/water (H2O) or by utilizing of CO2 gas at various temperatures in DMF/H2O or H2O. This reaction selectively consumes CO2 because CO2 is incorporated in the ZIF as carbonate. CO2 can be quantitatively released by acidifying the ZIF. Powder X-ray diffraction, single-crystal X-ray diffraction, FTIR spectroscopy, scanning electron microscopy, elemental analysis, and thermogravimetric analysis were used to characterize the ZIF structure. ZIF-CO3-1 (chemical formula C9H10N4O3Zn2), crystallizes in the orthorhombic crystal system with noncentrosymmetric space group Pba2.
authors: Department of Chemistry, University of Texas at Dallas , 800 West Campbell Road, Richardson, Texas 75080-3021, United States.
authors: Sajani A
authors: SA
authors: Basnayake
authors: Jie
authors: J
authors: Su
authors: Xiadong
authors: X
authors: Zou
authors: Kenneth J
authors: KJ
authors: Balkus