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The first zeolite w...
The first zeolite with a tri-directional extra-large 14-ring pore system derived using a phosphonium-based organic molecule
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- Yun, Yifeng (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Hernández, Manuel (författare)
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- Wan, Wei (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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visa fler...
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- Zou, Xiaodong (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Jordá, Jose L. (författare)
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Cantín, Angel (författare)
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Rey, Fernando (författare)
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- Corma, Avelino (författare)
- Instituto de Tecnología Química (UPV-CSIC), Universidad Politécnica de Valencia - Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 Valencia, Spain
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visa färre...
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(creator_code:org_t)
- Engelska.
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- A new germanosilicate zeolite (denoted as ITQ-53) with extra-large 14-ring pores has been synthesized using tri-tertbutylmethylphosphonium cation as the organic structure directing agent (OSDA). The new rotation electron diffraction (RED) method was used to both identify and solve the structure of ITQ-53 from an initially synthesized sample containing impurities, which facilitated the synthesis optimization that led to pure ITQ-53. The structure was refined against PXRD data. ITQ-53 is the first example of extra-large pore zeolites with tri-directional interconnected 14 × 14 × 14-ring channels. It is built from double 3-rings (D3Rs), double 4-rings (D4Rs), and a new composite building unit [42.54.63]. D3Rs are very rare, previously only found in two zeolitic silicogermanates. ITQ-53 is stable up to at least 450 °C. The structure of ITQ-53 was changed from monoclinic to orthorhombic up on calcination.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
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