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PST-24 :
PST-24 : A Zeolite with Varying Intracrystalline Channel Dimensionality
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Jo, Donghui (författare)
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- Zhao, Jingjing (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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- Cho, Jung (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Lee, Jeong Hwan (författare)
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Liu, Yang (författare)
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Liu, Chang-jun (författare)
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- Zou, Xiaodong (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Hong, Suk Bong (författare)
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(creator_code:org_t)
- 2020-08-11
- 2020
- Engelska.
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Ingår i: Angewandte Chemie International Edition. - : Wiley. - 1433-7851 .- 1521-3773. ; 59:40, s. 17691-17696
- Relaterad länk:
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https://doi.org/10.1...
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https://onlinelibrar...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Herein we report the synthesis, structure solution, and catalytic properties of PST-24, a novel channel-based medium-pore zeolite. This zeolite was synthesized via the excess fluoride approach. Electron diffraction shows that its structure is built by composite cas-zigzag (cas-zz) building chains, which are connected by double 5-ring (d5r) columns. While the cas-zz building chains are ordered in the PST-24 framework, the d5r columns adopt one of two possible arrangements; the two adjacent d5r columns are either at the same height or at different heights, denoted arrangements S and D, which can be regarded as open and closed valves that connect the channels, respectively. A framework with arrangement D only has a 2D 10-ring channel system, whereas that with arrangement S only contains 3D channels. In actual PST-24 crystals, the open and closed valves are almost randomly dispersed to yield a zeolite framework where the channel dimensionality varies locally from 2D to 3D.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- aluminosilicates
- channel dimensionality
- electron diffraction
- structure elucidation
- zeolites
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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