Details
| Original language | English |
|---|---|
| Pages (from-to) | 58-68 |
| Number of pages | 11 |
| Journal | Microporous and Mesoporous Materials |
| Volume | 86 |
| Issue number | 1-3 |
| Early online date | 31 Aug 2005 |
| Publication status | Published - 28 Nov 2005 |
Abstract
The infrared absorption of a solid highly diluted within an infrared transparent pellet (e.g., KBr, NaCl, etc.) is easily measured as a function of the temperature up to the melting point of the matrix. A disadvantage could be any interaction or chemical reaction between the matrix and the sample. However, such reactions and reactions within the embedded sample can be used in a systematical way for the investigation of the creation of new materials. Here, four types of working examples will be given. Starting with typical temperature dependent (TIR) investigations on the phase transition characteristics of a NaNO3-sodalite it is shown how this intrinsic property is effected by an exchange of Na/K between the matrix and the sodalite. Secondly, the effect of dehydration on NaB(OH)4-sodalite as studied in situ in the KBr pellet is considered. Thirdly, in situ investigations of the formation of new compositions within the family of cancrinites are described. Here, the effect of dehydration, and the combined exchange of Na/K and Cl/Br/NO3 of this typical microporous material is reported. Finally, the first steps of the soft chemically formed sodalite from the sol-gel liquid in the KBr container will be outlined briefly.
Keywords
- Ion exchange reactions, Phase transitions, Sodalites and cancrinites, Synthesis, Temperature dependent infrared
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
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In: Microporous and Mesoporous Materials, Vol. 86, No. 1-3, 28.11.2005, p. 58-68.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Chemical reactions and structural phase transitions of sodalites and cancrinites in temperature dependent infrared (TIR) experiments
AU - Rüscher, Claus H.
N1 - Funding Information: Results on the exchange reaction in sodalites goes back to the financial support within the DFG project on structure gradients in sodalites (RU764/3), which is gratefully acknowledged. The synthesis of cancrinites was part of a collaboration project with Prof. C. Linares (Carabobo University, Venezuela) as supported by the DAAD, which is, therefore, also gratefully acknowledged. Prof. J.-Chr. Buhl is thanked for providing nitrate and borate sodalite samples. I am thankful to Peter Stünkel who obtained part of the TIR results on the Cancrinite within his Diploma-work at our Department. Nada Salman, also working at our Department, is thanked for preparing the Al–Si containing liquid. The unknown referees and the editor are thanked for their helpful advices.
PY - 2005/11/28
Y1 - 2005/11/28
N2 - The infrared absorption of a solid highly diluted within an infrared transparent pellet (e.g., KBr, NaCl, etc.) is easily measured as a function of the temperature up to the melting point of the matrix. A disadvantage could be any interaction or chemical reaction between the matrix and the sample. However, such reactions and reactions within the embedded sample can be used in a systematical way for the investigation of the creation of new materials. Here, four types of working examples will be given. Starting with typical temperature dependent (TIR) investigations on the phase transition characteristics of a NaNO3-sodalite it is shown how this intrinsic property is effected by an exchange of Na/K between the matrix and the sodalite. Secondly, the effect of dehydration on NaB(OH)4-sodalite as studied in situ in the KBr pellet is considered. Thirdly, in situ investigations of the formation of new compositions within the family of cancrinites are described. Here, the effect of dehydration, and the combined exchange of Na/K and Cl/Br/NO3 of this typical microporous material is reported. Finally, the first steps of the soft chemically formed sodalite from the sol-gel liquid in the KBr container will be outlined briefly.
AB - The infrared absorption of a solid highly diluted within an infrared transparent pellet (e.g., KBr, NaCl, etc.) is easily measured as a function of the temperature up to the melting point of the matrix. A disadvantage could be any interaction or chemical reaction between the matrix and the sample. However, such reactions and reactions within the embedded sample can be used in a systematical way for the investigation of the creation of new materials. Here, four types of working examples will be given. Starting with typical temperature dependent (TIR) investigations on the phase transition characteristics of a NaNO3-sodalite it is shown how this intrinsic property is effected by an exchange of Na/K between the matrix and the sodalite. Secondly, the effect of dehydration on NaB(OH)4-sodalite as studied in situ in the KBr pellet is considered. Thirdly, in situ investigations of the formation of new compositions within the family of cancrinites are described. Here, the effect of dehydration, and the combined exchange of Na/K and Cl/Br/NO3 of this typical microporous material is reported. Finally, the first steps of the soft chemically formed sodalite from the sol-gel liquid in the KBr container will be outlined briefly.
KW - Ion exchange reactions
KW - Phase transitions
KW - Sodalites and cancrinites
KW - Synthesis
KW - Temperature dependent infrared
UR - http://www.scopus.com/inward/record.url?scp=27644482268&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2005.05.054
DO - 10.1016/j.micromeso.2005.05.054
M3 - Article
AN - SCOPUS:27644482268
VL - 86
SP - 58
EP - 68
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
SN - 1387-1811
IS - 1-3
ER -