Crystal structure of silica-ZSM-12 by the combined use of high-resolution solid-state MAS NMR spectroscopy and synchrotron X-ray powder diffraction

• Published in: Journal of physical chemistry (1952) 1990-05, Vol.94 (9), p.3718-3721
• Main Authors: FYFE, C. A, GIES, H, KOKOTAILO, G. T, MARLER, B, COX, D. E
• Format: Article
• Language: English
• Subjects: 400201 - Chemical & Physicochemical Properties; BREMSSTRAHLUNG; Chemistry; COHERENT SCATTERING; CRYSTAL STRUCTURE; DATA; DATA ANALYSIS; DIFFRACTION; ELECTROMAGNETIC RADIATION; Exact sciences and technology; EXPERIMENTAL DATA; General and physical chemistry; INFORMATION; INORGANIC ION EXCHANGERS; INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ION EXCHANGE MATERIALS; Ion-exchange; MATERIALS; MEASURING INSTRUMENTS; MEASURING METHODS; MINERALS; NUMERICAL DATA; RADIATIONS; SCATTERING; Surface physical chemistry; SYNCHROTRON RADIATION; X-RAY DIFFRACTION; ZEOLITES; Zeolites: preparations and properties
• ISSN: 0022-3654; 1541-5740
• DOI: 10.1021/j100372a066

The crystal structure of the synthetic zeolite silica-ZSM-12, 56 SiO{sub 2}, has been solved by the combined use of high-resolution solid-state MAS NMR spectroscopy and high-resolution synchrotron X-ray powder diffraction ZSM-12 crystallizes in the monoclinic space group C2/c with a{sub 0} = 24.863 {angstrom}, b{sub 0} = 5.012 {angstrom}, c{sub 0} = 24.328 {angstrom}, and {beta} = 107.7{degree}. The zeolite host structure is built from corner-linked SiO{sub 4} tetrahedra to give a three-dimensional 4-connected net. The pores of the structure are one-dimensional channels that do not intersect, with 12-membered ring pore openings of approximately 5.6 {times} 7.7 {angstrom}. The structure of ZSM-12 is frequently twinned with (100) as the twin plane, which indicates a new zeolite structure type.