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Synthesis and Structure Determination of Large-Pore Zeolite SCM-14

  • [设施]:上海光源
  • [期刊/会议名称]:Chemistry - A European Journal
  • [摘要]:Abstract: SCM-14 (Sinopec Composite Material No. 14), a new stable germanosilicate zeolite with a 12V8V8-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.
  • [发表日期]:2017
  • [第一作者]:Luo Yi
  • [第一作者单位]:中国石油化工股份有限公司上海石油化工研究院
  • [通讯作者]:Weimin Yang
  • [通讯作者单位]:中国石油化工股份有限公司上海石油化工研究院
  • [论文类型]:0
  • [期刊分类]:SCI2区
  • [学科分类]:化学
  • [影响因子]:5.3
  • [关键词]:Keywords: organic structure-directing agent · Rietveld refinement · structure determination · synthesis · zeolites
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