Synthesis Design and Structure of a Multipore Zeolite with Interconnected 12-and 10-MR Channels
2012 (English)In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 134, no 14, 6473-6478 p.Article in journal (Refereed) Published
A new molecular sieve, ITQ-38, containing interconnected large and medium pores in its structure has been synthesized. The rational combination of dicationic piperidine-derivative molecules as organic structure directing agents (OSDAs) with germanium and boron atoms in alkaline media has allowed the synthesis of ITQ-38 zeolite. High-resolution transmission electron microscopy (HRTEM) has been used to elucidate the framework topology of ITQ-38, revealing the presence of domains of perfect ITQ-38 crystals as well as very small areas containing nanosized ITQ-38/ITQ-22 intergrowths. The structure of ITQ-38 is highly related to ITQ-22 and the recently described polymorph C of ITQ-39 zeolite. It shares a common building layer with ITQ-22 and contains the same building unit as the polymorph C of ITQ-39. All three structures present similar framework density, 16.1 T atoms/1000 angstrom(3).
Place, publisher, year, edition, pages
2012. Vol. 134, no 14, 6473-6478 p.
IdentifiersURN: urn:nbn:se:su:diva-76075DOI: 10.1021/ja301082nISI: 000302524800057OAI: oai:DiVA.org:su-76075DiVA: diva2:525504