A Germanosilicate Structure with 11 x 11 x 12-Ring Channels Solved by Electron Crystallography
2014 (English)In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 53, no 23, 5868-5871 p.Article in journal (Refereed) Published
Zeolites have been widely used in industry owing to their ordered micropores and stable frameworks. The pore sizes and shapes are the key parameters that affect the selectivity and efficiency in their applications in catalysis, sorption, and separation. Zeolites with pores defined by 10 and 12 TO4 tetrahedra are often used for various catalytic processes. To optimize the performance of zeolites, it is extremely desirable to fine-tune the pore sizes/shapes. The first germanosilicate zeolite with a three-dimensional 11 x 11 x 12-ring channel system, PKU-16 (PKU, Peking University) is presented. Nanosized PKU-16 was structurally characterized by the new three-dimensional rotation electron diffraction (RED) technique. PKU-16 is structurally related to the zeolite beta polymorph C (BEC, 12 x 12 x 12-ring channels) by rotating half of the four-rings in double mtw units.
Place, publisher, year, edition, pages
2014. Vol. 53, no 23, 5868-5871 p.
electron microscopy, porous materials, powder X-ray diffraction, structure elucidation, zeolites
IdentifiersURN: urn:nbn:se:su:diva-106085DOI: 10.1002/anie.201309766ISI: 000337094200022OAI: oai:DiVA.org:su-106085DiVA: diva2:735446