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Syntheses, structur...
Syntheses, structure solutions, and catalytic performance of two novel layered silicates
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Liang, Jie (författare)
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- Su, Jie (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Chen, Yanping (författare)
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Li, Zhaofei (författare)
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Li, Kuo (författare)
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Zhang, Hao (författare)
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- Zou, Xiaodong (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Liao, Fuhui (författare)
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Wang, Yingxia (författare)
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Lin, Jianhua (författare)
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(creator_code:org_t)
- 2015
- 2015
- Engelska.
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Ingår i: Dalton Transactions. - : Royal Society of Chemistry (RSC). - 1477-9226 .- 1477-9234. ; 44:35, s. 15567-15575
- Relaterad länk:
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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
- Two novel layered silicates, PKU-13 and PKU-13a, were hydrothermally synthesized by using trimethyl-propylammonium hydroxide as the structure directing agent (SDA). Their structures were solved by using powder X-ray diffraction data in combination with electron diffraction technique and NMR spectroscopy. These two silicates are built from the same r52 layer in different stacking modes: the adjacent r52 layers in PKU-13a have a 0.5b + 0.68c shift compared with those in PKU-13. The difference is due to the SDA cations located between the layers. The SDA cations exist as a monolayer in the structure of PKU-13, and link the adjacent layers by Coulomb actions in combination with strong hydrogen bonds. In PKU-13a, the SDA cations present in the bi-layer expend the distance between layers and destroy the inter-layer hydrogen bonds. PKU-13a can transform to PKU-13 after treatment with acetic acid solution. The co-existence of intra-layer hydrogen bonds in PKU-13 interfere in its condensation to an ordered crystalline microporous framework. Both PKU-13 and PKU-13a exhibit good catalytic activities as base catalysts in the Knoevenagel condensation reaction.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
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- art (ämneskategori)
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Liang, Jie
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Su, Jie
-
Chen, Yanping
-
Li, Zhaofei
-
Li, Kuo
-
Zhang, Hao
-
visa fler...
-
Zou, Xiaodong
-
Liao, Fuhui
-
Wang, Yingxia
-
Lin, Jianhua
-
visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
- Artiklar i publikationen
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Dalton Transacti ...
- Av lärosätet
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Stockholms universitet