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Synthesis and structure determination of large-pore zeolite SCM-14

DOI: 10.1002/chem.201703361 DOI Help

Authors: Yi Luo (Sinopec Shanghai Research Institute of Petrochemical Technology) , Stef Smeets (Stockholm University) , Fei Peng (Stockholm University) , Ahmed S. Etman (Stockholm University) , Zhendong Wang (Sinopec Shanghai Research Institute of Petrochemical Technology) , Junliang Sun (Stockholm University; Peking University) , Weimin Yang (Sinopec Shanghai Research Institute of Petrochemical Technology; East China University of Science and Technology)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Chemistry - A European Journal , VOL 23 , PAGES 16829 - 16834

State: Published (Approved)
Published: November 2017

Abstract: SCM-14 (Sinopec Composite Material No. 14), a new stable germanosilicate zeolite with a 12×8×8-ring channel system, was synthesized using commercially available 4-pyrrolidinopyridine as organic structure-directing agents (OSDAs) in fluoride medium. The framework structure of SCM-14 was determined using rotation electron diffraction (RED), and refined against synchrotron X-ray powder diffraction (SXPD) data for both as-made and calcined materials. The framework structure of SCM-14 is closely related to that of three known zeolites: mordenite (MOR), GUS-1 (GON), and IM-16 (UOS). SCM-14 has the same projection as that of mordenite and GUS-1 when viewed along the 12-ring channels, and possesses two more straight 8-ring channels running perpendicular to the 12-ring channels. The structure of SCM-14 can be constructed by either the same layers as that of GUS-1 or the same columns as that of IM-16. Based on their structural relationship, three topologically reasonable hypothetical zeolites were predicted.

Journal Keywords: organic structure-directing agent; Rietveld refinement; structure determination; synthesis; zeolites

Subject Areas: Chemistry, Materials

Instruments: I11-High Resolution Powder Diffraction

Other Facilities: SSRF

Added On: 30/01/2018 09:02

Discipline Tags:

Zeolites Chemistry Materials Science Chemical Engineering Engineering & Technology

Technical Tags:

Diffraction X-ray Powder Diffraction