Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 134, Issue 14, Pages 6473-6478Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja301082n
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Funding
- Spanish MICINN [MAT2009-14528-C02-01, MAT2006-14274-C02-01]
- Consolider Ingenio-Multicat
- Generalitat Valenciana by the PROMETEO
- UPV [PAJD-06-11, 1952]
- Swedish Research Council (VR)
- Swedish Governmental Agency for Innovation Systems (VINNOVA)
- Gustafsson Foundtion for Natural Sciences and Medical Research
- Subprograma Ramon y Cajal [RYC-2011-08972]
- Carl-Trygger Foundation
- Knut and Alice Wallenberg Foundation
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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).
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