The lithium- And sodium-enhanced transformation of Ba-exchanged zeolite LTA into celsian phase

V. Dondur; R. Dimitrijević; A. Kremenović; Lj Damjanović; N. Romčević; S. Macura

doi:10.1016/j.jpcs.2008.07.007

The lithium- And sodium-enhanced transformation of Ba-exchanged zeolite LTA into celsian phase

V. Dondur, R. Dimitrijević, A. Kremenović, Lj Damjanović, N. Romčević, S. Macura

Biochemistry and Molecular Biology

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The Li⁺- and Na⁺-doped hexacelsians (HC) synthesized from Ba-LTA synthetic zeolite as precursors were used for preparation of monoclinic celsians (MC). The doped pure MC and mixture HC/MC species were obtained by thermally induced polymorphous transformation at 1200 C. Synthesized-doped MC have been characterized by X-ray powder diffraction and spectroscopic (infrared, Raman and ²⁹Si magic angle spinning nuclear magnetic resonance) methods. The obtained results suggest that in all investigated samples Na⁺ or Li⁺ dopants were incorporated in MC crystal structures during thermal transformation of a zeolite. It has been shown that HC → MC transformation depends on molar fractions of alkali cations. These findings combined with used temperature/time conditions could help in optimization of MC synthesis route.

Original language	English (US)
Pages (from-to)	2827-2832
Number of pages	6
Journal	Journal of Physics and Chemistry of Solids
Volume	69
Issue number	11
DOIs	https://doi.org/10.1016/j.jpcs.2008.07.007
State	Published - Nov 2008

Keywords

Ceramics
Chemical synthesis
Crystal structure
Phase transitions

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/j.jpcs.2008.07.007

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title = "The lithium- And sodium-enhanced transformation of Ba-exchanged zeolite LTA into celsian phase",

abstract = "The Li+- and Na+-doped hexacelsians (HC) synthesized from Ba-LTA synthetic zeolite as precursors were used for preparation of monoclinic celsians (MC). The doped pure MC and mixture HC/MC species were obtained by thermally induced polymorphous transformation at 1200 C. Synthesized-doped MC have been characterized by X-ray powder diffraction and spectroscopic (infrared, Raman and 29Si magic angle spinning nuclear magnetic resonance) methods. The obtained results suggest that in all investigated samples Na+ or Li+ dopants were incorporated in MC crystal structures during thermal transformation of a zeolite. It has been shown that HC → MC transformation depends on molar fractions of alkali cations. These findings combined with used temperature/time conditions could help in optimization of MC synthesis route.",

keywords = "Ceramics, Chemical synthesis, Crystal structure, Phase transitions",

author = "V. Dondur and R. Dimitrijevi{\'c} and A. Kremenovi{\'c} and Lj Damjanovi{\'c} and N. Rom{\v c}evi{\'c} and S. Macura",

note = "Funding Information: This work was supported by the Ministry of Science and Environmental Protection of the Republic of Serbia, within the framework of the Project nos. 142055 and 141027. The authors thank P. Vulic for 29 Si MAS NMR data processing.",

year = "2008",

month = nov,

doi = "10.1016/j.jpcs.2008.07.007",

language = "English (US)",

volume = "69",

pages = "2827--2832",

journal = "Journal of Physics and Chemistry of Solids",

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T1 - The lithium- And sodium-enhanced transformation of Ba-exchanged zeolite LTA into celsian phase

AU - Dondur, V.

AU - Dimitrijević, R.

AU - Kremenović, A.

AU - Damjanović, Lj

AU - Romčević, N.

AU - Macura, S.

N1 - Funding Information: This work was supported by the Ministry of Science and Environmental Protection of the Republic of Serbia, within the framework of the Project nos. 142055 and 141027. The authors thank P. Vulic for 29 Si MAS NMR data processing.

PY - 2008/11

Y1 - 2008/11

N2 - The Li+- and Na+-doped hexacelsians (HC) synthesized from Ba-LTA synthetic zeolite as precursors were used for preparation of monoclinic celsians (MC). The doped pure MC and mixture HC/MC species were obtained by thermally induced polymorphous transformation at 1200 C. Synthesized-doped MC have been characterized by X-ray powder diffraction and spectroscopic (infrared, Raman and 29Si magic angle spinning nuclear magnetic resonance) methods. The obtained results suggest that in all investigated samples Na+ or Li+ dopants were incorporated in MC crystal structures during thermal transformation of a zeolite. It has been shown that HC → MC transformation depends on molar fractions of alkali cations. These findings combined with used temperature/time conditions could help in optimization of MC synthesis route.

AB - The Li+- and Na+-doped hexacelsians (HC) synthesized from Ba-LTA synthetic zeolite as precursors were used for preparation of monoclinic celsians (MC). The doped pure MC and mixture HC/MC species were obtained by thermally induced polymorphous transformation at 1200 C. Synthesized-doped MC have been characterized by X-ray powder diffraction and spectroscopic (infrared, Raman and 29Si magic angle spinning nuclear magnetic resonance) methods. The obtained results suggest that in all investigated samples Na+ or Li+ dopants were incorporated in MC crystal structures during thermal transformation of a zeolite. It has been shown that HC → MC transformation depends on molar fractions of alkali cations. These findings combined with used temperature/time conditions could help in optimization of MC synthesis route.

KW - Ceramics

KW - Chemical synthesis

KW - Crystal structure

KW - Phase transitions

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DO - 10.1016/j.jpcs.2008.07.007

M3 - Article

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JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 11

ER -

The lithium- And sodium-enhanced transformation of Ba-exchanged zeolite LTA into celsian phase

Abstract

Keywords

ASJC Scopus subject areas

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