TY  - JOUR
AU  - Tančić, Pavle
AU  - Vulić, Predrag
AU  - Kaindl, Reinhard
AU  - Sartory, Bernhard
AU  - Dimitrijević, Radovan
PY  - 2012
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5901
AB  - The macroscopically-zoned grandite from the garnetite skarn of Meka Presedla (Kopaonik Mountain, Serbia) was studied with optical microscopy, electron microprobe analysis (EMPA), Fourier transform infra-red (FT–IR), and Raman methods. The EMPA results indicate that the main core–rim compositional variations (Ca2.93–2.97Mn0.05–0.06Mg0.00–0.01Al1.14–1.26Fe3+0.72–0.83Ti0.00–0.02Si2.97–3.02O12) slightly differ along the zones, showing evidence for a quasi-cyclic alternation of the oscillatory zoning nature. Among this, considerable variation is observed only by the Al–Fe3+ substitutions in the octahedral site. The EMPA also indicate that the grandite zones compositionally vary, mostly within ±1 and ±2 mol% of the homogeneity level range, that is, Grs64±1Adr36±1Sps2 (A), Grs62±1Adr38±1Sps2 (B), Grs59±2Adr40±2Sps2 (C), Grs58±2Adr41±2Sps2 (D), and Grs58±1Adr41±1Sps2 (E). Therefore, the investigated garnet can be considered as relatively highly homogeneous. The majority of compositions lie within the narrow miscibility region of 0.58±2<XGrs<0.64±1, without gaps, and with only three outliers near the zone boundaries of approximately 0.38<XGrs<0.52. FT–IR and Raman bands are almost constant within the zones and adequate to the chemical compositions. All of the zones should be considered as anhydrous. From the results, formation temperatures between ~600 and 720oC, and pressures of ~2–3 kbars, are derived. Among five possible causes for the slightly optical anisotropy of grandite, three were reconsidered, and consequently rejected.
PB  - John Wiley & Sons, Inc.
T2  - Acta Geologica Sinica-English Edition
T1  - Macroscopically-zoned grandite from the garnetite skarn of Meka Presedla (Kopaonik Mountain, Serbia)
VL  - 86
IS  - 2
SP  - 393
EP  - 406
DO  - 10.1111/j.1755-6724.2012.00668.x
ER  - 

@article{
author = "Tančić, Pavle and Vulić, Predrag and Kaindl, Reinhard and Sartory, Bernhard and Dimitrijević, Radovan",
year = "2012",
abstract = "The macroscopically-zoned grandite from the garnetite skarn of Meka Presedla (Kopaonik Mountain, Serbia) was studied with optical microscopy, electron microprobe analysis (EMPA), Fourier transform infra-red (FT–IR), and Raman methods. The EMPA results indicate that the main core–rim compositional variations (Ca2.93–2.97Mn0.05–0.06Mg0.00–0.01Al1.14–1.26Fe3+0.72–0.83Ti0.00–0.02Si2.97–3.02O12) slightly differ along the zones, showing evidence for a quasi-cyclic alternation of the oscillatory zoning nature. Among this, considerable variation is observed only by the Al–Fe3+ substitutions in the octahedral site. The EMPA also indicate that the grandite zones compositionally vary, mostly within ±1 and ±2 mol% of the homogeneity level range, that is, Grs64±1Adr36±1Sps2 (A), Grs62±1Adr38±1Sps2 (B), Grs59±2Adr40±2Sps2 (C), Grs58±2Adr41±2Sps2 (D), and Grs58±1Adr41±1Sps2 (E). Therefore, the investigated garnet can be considered as relatively highly homogeneous. The majority of compositions lie within the narrow miscibility region of 0.58±2<XGrs<0.64±1, without gaps, and with only three outliers near the zone boundaries of approximately 0.38<XGrs<0.52. FT–IR and Raman bands are almost constant within the zones and adequate to the chemical compositions. All of the zones should be considered as anhydrous. From the results, formation temperatures between ~600 and 720oC, and pressures of ~2–3 kbars, are derived. Among five possible causes for the slightly optical anisotropy of grandite, three were reconsidered, and consequently rejected.",
publisher = "John Wiley & Sons, Inc.",
journal = "Acta Geologica Sinica-English Edition",
title = "Macroscopically-zoned grandite from the garnetite skarn of Meka Presedla (Kopaonik Mountain, Serbia)",
volume = "86",
number = "2",
pages = "393-406",
doi = "10.1111/j.1755-6724.2012.00668.x"
}

Tančić, P., Vulić, P., Kaindl, R., Sartory, B.,& Dimitrijević, R.. (2012). Macroscopically-zoned grandite from the garnetite skarn of Meka Presedla (Kopaonik Mountain, Serbia). in Acta Geologica Sinica-English Edition
John Wiley & Sons, Inc.., 86(2), 393-406.
https://doi.org/10.1111/j.1755-6724.2012.00668.x

Tančić P, Vulić P, Kaindl R, Sartory B, Dimitrijević R. Macroscopically-zoned grandite from the garnetite skarn of Meka Presedla (Kopaonik Mountain, Serbia). in Acta Geologica Sinica-English Edition. 2012;86(2):393-406.
doi:10.1111/j.1755-6724.2012.00668.x .

Tančić, Pavle, Vulić, Predrag, Kaindl, Reinhard, Sartory, Bernhard, Dimitrijević, Radovan, "Macroscopically-zoned grandite from the garnetite skarn of Meka Presedla (Kopaonik Mountain, Serbia)" in Acta Geologica Sinica-English Edition, 86, no. 2 (2012):393-406,
https://doi.org/10.1111/j.1755-6724.2012.00668.x . .

TY  - JOUR
AU  - Ciric-Marjanovic, G.
AU  - Dondur, Vera
AU  - Milojević, M.
AU  - Mojović, Miloš
AU  - Mentus, Slavko
AU  - Radulović, Aleksandra
AU  - Vuković, Zorica
AU  - Stejskal, J.
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/568
AB  - Self-assembled conducting, paramagnetic polyaniline nanotubes have been synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in aqueous medium in the presence of zeolite HZSM-5, without added acid. The influence of initial zeolite/aniline weight ratio on the conductivity, molecular and supramolecular structure, paramagnetic characteristics, thermal stability, and specific surface area of poly aniline/zeolite composites was studied. The conducting (∼10-2S cm-1), semiconducting (3 × 10-5 S cm-1), and nonconducting (5 × 10-9 S cm-1) composites are produced using the zeolite/aniline weight ratios 1, 5, and 10, respectively. The coexistence of polyaniline nanotubes, which have a typical outer diameter of 70-170 nm and an inner diameter of 5-50 nm, accompanied by nanorods with a diameter of 60-100 nm and polyaniline/zeolite mesoporous aggregates, distinct from the morphology of mieroporous zeolite HZSM-5, was proved in the conducting nanocomposite by scanning and transmission electron microscopies. FTIR spectroscopy confirmed the presence of polyaniline in the form of conducting emeraldine salt and suggested significant interaction of polyaniline with zeolite. The evolution of molecular and supramolecular structure of polyaniline in the presence of zeolite was discussed.
T2  - Langmuir
T1  - Synthesis and characterization of conducting self-assembled polyaniline nanotubes/zeolite nanocomposite
VL  - 25
IS  - 5
SP  - 3122
EP  - 3131
DO  - 10.1021/la8030396
ER  - 

@article{
author = "Ciric-Marjanovic, G. and Dondur, Vera and Milojević, M. and Mojović, Miloš and Mentus, Slavko and Radulović, Aleksandra and Vuković, Zorica and Stejskal, J.",
year = "2009",
abstract = "Self-assembled conducting, paramagnetic polyaniline nanotubes have been synthesized by the oxidative polymerization of aniline with ammonium peroxydisulfate in aqueous medium in the presence of zeolite HZSM-5, without added acid. The influence of initial zeolite/aniline weight ratio on the conductivity, molecular and supramolecular structure, paramagnetic characteristics, thermal stability, and specific surface area of poly aniline/zeolite composites was studied. The conducting (∼10-2S cm-1), semiconducting (3 × 10-5 S cm-1), and nonconducting (5 × 10-9 S cm-1) composites are produced using the zeolite/aniline weight ratios 1, 5, and 10, respectively. The coexistence of polyaniline nanotubes, which have a typical outer diameter of 70-170 nm and an inner diameter of 5-50 nm, accompanied by nanorods with a diameter of 60-100 nm and polyaniline/zeolite mesoporous aggregates, distinct from the morphology of mieroporous zeolite HZSM-5, was proved in the conducting nanocomposite by scanning and transmission electron microscopies. FTIR spectroscopy confirmed the presence of polyaniline in the form of conducting emeraldine salt and suggested significant interaction of polyaniline with zeolite. The evolution of molecular and supramolecular structure of polyaniline in the presence of zeolite was discussed.",
journal = "Langmuir",
title = "Synthesis and characterization of conducting self-assembled polyaniline nanotubes/zeolite nanocomposite",
volume = "25",
number = "5",
pages = "3122-3131",
doi = "10.1021/la8030396"
}

Ciric-Marjanovic, G., Dondur, V., Milojević, M., Mojović, M., Mentus, S., Radulović, A., Vuković, Z.,& Stejskal, J.. (2009). Synthesis and characterization of conducting self-assembled polyaniline nanotubes/zeolite nanocomposite. in Langmuir, 25(5), 3122-3131.
https://doi.org/10.1021/la8030396

Ciric-Marjanovic G, Dondur V, Milojević M, Mojović M, Mentus S, Radulović A, Vuković Z, Stejskal J. Synthesis and characterization of conducting self-assembled polyaniline nanotubes/zeolite nanocomposite. in Langmuir. 2009;25(5):3122-3131.
doi:10.1021/la8030396 .

Ciric-Marjanovic, G., Dondur, Vera, Milojević, M., Mojović, Miloš, Mentus, Slavko, Radulović, Aleksandra, Vuković, Zorica, Stejskal, J., "Synthesis and characterization of conducting self-assembled polyaniline nanotubes/zeolite nanocomposite" in Langmuir, 25, no. 5 (2009):3122-3131,
https://doi.org/10.1021/la8030396 . .