Exceptional chemical and thermal stability of zeolitic imidazolate frameworks

Proceedings of the National Academy of Sciences of the United States of America - Tập 103 Số 27 - Trang 10186-10191 - 2006
Kyo Sung Park1, Zheng Ni1, Adrien P. Côté1, Jae Yong Choi2, Rudan Huang3, Fernando J. Uribe‐Romo1, Hee K. Chae2, M. O’Keeffe4, Omar M. Yaghi1
1Department of Chemistry and Biochemistry, Center for Reticular Materials Research at California NanoSystems Institute, University of California, Los Angeles, CA 90095
2Department of Chemistry Education, Seoul National University, Seoul 151-748, Korea;
3Institute for Chemical Physics, School of Science, Beijing Institute of Technology, Beijing 100081, People’s Republic of China; and
4Department of Chemistry, Arizona State University, Tempe, AZ 85287

Tóm tắt

Twelve zeolitic imidazolate frameworks (ZIFs; termed ZIF-1 to -12) have been synthesized as crystals by copolymerization of either Zn(II) (ZIF-1 to -4, -6 to -8, and -10 to -11) or Co(II) (ZIF-9 and -12) with imidazolate-type links. The ZIF crystal structures are based on the nets of seven distinct aluminosilicate zeolites: tetrahedral Si(Al) and the bridging O are replaced with transition metal ion and imidazolate link, respectively. In addition, one example of mixed-coordination imidazolate of Zn(II) and In(III) (ZIF-5) based on the garnet net is reported. Study of the gas adsorption and thermal and chemical stability of two prototypical members, ZIF-8 and -11, demonstrated their permanent porosity (Langmuir surface area = 1,810 m 2 /g), high thermal stability (up to 550°C), and remarkable chemical resistance to boiling alkaline water and organic solvents.

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Thông tin xuất bản

Proceedings of the National Academy of Sciences of the United States of America

Tập 103 Số 27

10186-10191

Thông tin tác giả