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  • 1
    Electronic Resource
    Electronic Resource
    State of alkali azides in zeolites studied by thermal analysis (1996)
    Springer
    Journal of thermal analysis and calorimetry 47 (1996), S. 419-426 
    Details
    ISSN: 1572-8943
    Keywords: azides in zeolites
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Thermal behaviour of pure LiN3, NaN3, CsN3 and their mixture with the respective LiY-FAU, NaY-FAU, CsY-FAU zeolite was investigated by means of thermogravimetry and IR spectroscopy. Thermodesorption of CO2 was applied to compare the basicity of the alkali ionexchanged Y zeolites. Two of the investigated systems, the NaN3/NaY-FAU and the CsN3/CsY-FAU gave single, well defined and reproducible azide decomposition features rendering these samples to apply as catalyst precursors for preparation of zeolite with basic character.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01983983
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal behavior of alkali metal azides in NaY-FAU zeolite (1996)
    Springer
    Journal of thermal analysis and calorimetry 46 (1996), S. 1301-1311 
    Details
    ISSN: 1572-8943
    Keywords: alkali metal azides ; zeolite
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The thermal behavior of pure alkali metal azides and their mechanical mixtures with NaY-FAU zeolite was investigated by means of thermogravimetry and IR spectroscopy. LiN3, KN3, RbN3 and CsN3 were prepared from NaN3 by ion-exchange. The pure azides exhibited low thermal stability, hindering the precise spectroscopic characterization in some cases. The decomposition of each azide in the zeolite took place above the temperature characteristic for the pure azide, demonstrating the stabilization of the azide in the zeolite cavities. This feature was the only common characteristic established for the azide/zeolite systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01979244
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  • 3
    Electronic Resource
    Electronic Resource
    Behaviour of Hydrotalcite and Its Fe (CN)64- Pillared Derivative on Heat Treatment (1999)
    Springer
    Journal of thermal analysis and calorimetry 56 (1999), S. 311-316 
    Details
    ISSN: 1572-8943
    Keywords: dehydration/rehydration and stability characterization ; Fe(CN)6 4- anion pillared layered double hydroxide ; Mg-Al layered double hydroxide ; thermal behaviour
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Mg-Al L(ayered) D(ouble) H(ydroxide) was prepared and its thermal behaviour was characterized by thermoanalytical methods (TG, DTG, DTA), 27Al M(agic) A(ngle) S(pinning) NMR spectroscopy, X-ray diffractometry (XRD) and S(canning) E(lectron) M(icroscopy). Heat treatment destroyed the layered structure, which could only be partially reconstituted by rehydration. On calcination mixed oxide with the predominance of basic sites were formed. Pillaring the LDH with Fe(CN)6 4- anions was also performed. The material was characterized by XRD and BET measurements. Heat stability of the pillared substance was investigated, too. Pillaring proved to be successful, however, decreased heat resistance was found in the intercalated material relative to the guest LDH.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010138314956
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of layered double hydroxides and their reactivities in 1-butene isomerization after calcination (1996)
    Springer
    Reaction kinetics and catalysis letters 59 (1996), S. 47-52 
    Details
    ISSN: 1588-2837
    Keywords: Calcined layered double hydroxides ; acid-base character ; CO2 TPD ; 1-butene isomerization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Layered double hydroxides were synthesized and their catalytic activities tested in 1-butene isomerization after calcination at 723 K. The heat treatment destroyed the hydrotalcite-like structure creating mixed oxides with wide-ranging acid-base properties as revealed by temperature-programmed desorption of carbon dioxide and the double bond isomerization of 1-butene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02067991
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  • 5
    Electronic Resource
    Electronic Resource
    Acid-base testing of catalysts using 1-butene isomerization as test reaction (1995)
    Springer
    Reaction kinetics and catalysis letters 56 (1995), S. 55-61 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Catalysts tested were classified into two groups according to the initial ratio ofcis- andtrans-2-butene in the products. CaY, Fe-PILC and Al-PILC proved to be acidic while LiY, NaN3/NaY and calcined hydrotalcite (HT) basic materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02066950
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