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Open-framework Stru...
Open-framework Structures Built by Inorganic Clusters : Synthesis and Characterization
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- Chen, Hong, 1986- (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Junliang Sun
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- Sun, Junliang, Docent (preses)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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- Zou, Xiaodong, Prof. (preses)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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- Albrecht-Schmitt, Thomas E, Prof. (opponent)
- Florida State University
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(creator_code:org_t)
- ISBN 9789174479621
- Stockholm : Department of Materials and Environmental Chemistry (MMK), Stockholm Univeristy, 2014
- Engelska 87 s.
- Relaterad länk:
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https://su.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Novel open-framework germanates and vanadoborates, which are constructed from typical types of clusters, have been synthesized based on different strategies. The crystal structures are solved by using single crystal X-ray diffraction (SXRD) technique or by combined techniques. Additionally, the structures of two open-framework materials, PKU-3 and PKU-16, are determined from nano-sized crystals by rotation electron diffraction (RED) combined with powder X-ray diffraction (PXRD).This thesis serves as an introduction to synthesis of open-framework germanates and vanadoborates based on different design strategies. Two germanates are obtained; SU-74 is achieved by employing a novel structure directing agent (SDA), SUT-8 is achieved by assembling the novel structure building units (SBUs) of Co@Ge14 with the introduction of cobalt ions in the synthesis. Four strategies are successfully used in construction of open-framework vanadoborates: using metal-oxo polyhedra as the linkages in SUT-6; applying the scale chemistry approach in SUT-7; employing metal-organic complexes as the linkages in SUT-12, SUT-13, SUT-14; and introducing covalent bond organic linkages into SUT-10 and SUT-11. Single crystal X-ray diffraction is used to conduct the structure determination in combination with other techniques.Furthermore, the structures of two open-framework materials, an aluminoborate PKU-3 and a germanosilicate PKU-16, are solved from nano-sized crystals using RED data. The structures are further confirmed by Rietveld refinement against PXRD data. The advantages of the RED techniques are demonstrated in two aspects. In PKU-3, the presence of seriously preferred orientation and light elements in the structure makes it difficult for structure determination by PXRD, but it is easier by RED. In PKU-16, the RED technique is used to determine its structure from the as-synthesized multi-phasic sample containing nano-sized crystals. After the structure of PKU-16 has been solved, the synthesis of this interesting phase can be optimized and pure PKU-16 can be obtained.Keywords: Open-framework, germanates, vanadoborates, aluminoborates, germanosilicates, crystal structure, hydrothermal synthesis, single crystal X-ray diffraction, rotation electron diffraction, powder X-ray diffraction
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Nyckelord
- Open-framework
- germanates
- vanadoborates
- aluminoborates
- germanosilicates
- crystal structure
- hydrothermal synthesis
- crystal X-ray diffraction
- rotation electron diffraction
- powder X-ray diffraction
- Inorganic Chemistry
- oorganisk kemi
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- dok (ämneskategori)
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