Thermal evolution of gels prepared by chelation of aluminum sec-butoxide with ethyl acetoacetate in various amounts
Abstract This work presents a thermal evolution study of gels obtained by chelation of aluminum sec-butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and th...
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Gespeichert in:
| Autor*in: |
Kurajica, S. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2022 |
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| Schlagwörter: |
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| Anmerkung: |
© Akadémiai Kiadó, Budapest, Hungary 2022 |
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| Übergeordnetes Werk: |
Enthalten in: Journal of thermal analysis and calorimetry - Springer International Publishing, 1998, 148(2022), 4 vom: 01. Juli, Seite 1231-1239 |
|---|---|
| Übergeordnetes Werk: |
volume:148 ; year:2022 ; number:4 ; day:01 ; month:07 ; pages:1231-1239 |
| Links: |
|---|
| DOI / URN: |
10.1007/s10973-022-11448-8 |
|---|
| Katalog-ID: |
OLC2133944141 |
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| 520 | |a Abstract This work presents a thermal evolution study of gels obtained by chelation of aluminum sec-butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and thermo-gravimetric analysis (DTA/TGA), Fourier-transformed infra-red spectroscopy (FTIR) and X-ray diffraction (XRD). It was established that samples with a low Eaa/Asb ratio are mainly amorphous, whilst the samples with greater Eaa/Asb ratio are predominantly chelate. The crystallization of γ-$ Al_{2} $$ O_{3} $ takes place between 600 and 1000 °C in two separate processes for all investigated samples. On the other hand, a complete transition to α-$ Al_{2} $$ O_{3} $ at 1200 °C occurs exclusively in samples with high Eaa/Asb ratio, while it is only partial for samples with low Eaa/Asb ratio. The observed mass loss is in concordance with the hypothesis that the overall gel content in the samples could be represented by a simplified formula Al(Eaa)x$ O_{(3−x)/2} $, where x is the Eaa/Asb ratio. In addition to thermal evolution, the gel-chelate duality of the samples is reflected in the morphology and particle size distribution. | ||
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10.1007/s10973-022-11448-8 doi (DE-627)OLC2133944141 (DE-He213)s10973-022-11448-8-p DE-627 ger DE-627 rakwb eng 660 VZ Kurajica, S. verfasserin (orcid)0000-0002-7066-1213 aut Thermal evolution of gels prepared by chelation of aluminum sec-butoxide with ethyl acetoacetate in various amounts 2022 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Akadémiai Kiadó, Budapest, Hungary 2022 Abstract This work presents a thermal evolution study of gels obtained by chelation of aluminum sec-butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and thermo-gravimetric analysis (DTA/TGA), Fourier-transformed infra-red spectroscopy (FTIR) and X-ray diffraction (XRD). It was established that samples with a low Eaa/Asb ratio are mainly amorphous, whilst the samples with greater Eaa/Asb ratio are predominantly chelate. The crystallization of γ-$ Al_{2} $$ O_{3} $ takes place between 600 and 1000 °C in two separate processes for all investigated samples. On the other hand, a complete transition to α-$ Al_{2} $$ O_{3} $ at 1200 °C occurs exclusively in samples with high Eaa/Asb ratio, while it is only partial for samples with low Eaa/Asb ratio. The observed mass loss is in concordance with the hypothesis that the overall gel content in the samples could be represented by a simplified formula Al(Eaa)x$ O_{(3−x)/2} $, where x is the Eaa/Asb ratio. In addition to thermal evolution, the gel-chelate duality of the samples is reflected in the morphology and particle size distribution. Alumina Sol–gel Chelation Thermal analysis Mužina, K. aut Simčić, I. aut Mandić, V. (orcid)0000-0002-1036-0603 aut Enthalten in Journal of thermal analysis and calorimetry Springer International Publishing, 1998 148(2022), 4 vom: 01. Juli, Seite 1231-1239 (DE-627)244148767 (DE-600)1429493-X (DE-576)066397693 1388-6150 nnns volume:148 year:2022 number:4 day:01 month:07 pages:1231-1239 https://doi.org/10.1007/s10973-022-11448-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE AR 148 2022 4 01 07 1231-1239 |
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10.1007/s10973-022-11448-8 doi (DE-627)OLC2133944141 (DE-He213)s10973-022-11448-8-p DE-627 ger DE-627 rakwb eng 660 VZ Kurajica, S. verfasserin (orcid)0000-0002-7066-1213 aut Thermal evolution of gels prepared by chelation of aluminum sec-butoxide with ethyl acetoacetate in various amounts 2022 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Akadémiai Kiadó, Budapest, Hungary 2022 Abstract This work presents a thermal evolution study of gels obtained by chelation of aluminum sec-butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and thermo-gravimetric analysis (DTA/TGA), Fourier-transformed infra-red spectroscopy (FTIR) and X-ray diffraction (XRD). It was established that samples with a low Eaa/Asb ratio are mainly amorphous, whilst the samples with greater Eaa/Asb ratio are predominantly chelate. The crystallization of γ-$ Al_{2} $$ O_{3} $ takes place between 600 and 1000 °C in two separate processes for all investigated samples. On the other hand, a complete transition to α-$ Al_{2} $$ O_{3} $ at 1200 °C occurs exclusively in samples with high Eaa/Asb ratio, while it is only partial for samples with low Eaa/Asb ratio. The observed mass loss is in concordance with the hypothesis that the overall gel content in the samples could be represented by a simplified formula Al(Eaa)x$ O_{(3−x)/2} $, where x is the Eaa/Asb ratio. In addition to thermal evolution, the gel-chelate duality of the samples is reflected in the morphology and particle size distribution. Alumina Sol–gel Chelation Thermal analysis Mužina, K. aut Simčić, I. aut Mandić, V. (orcid)0000-0002-1036-0603 aut Enthalten in Journal of thermal analysis and calorimetry Springer International Publishing, 1998 148(2022), 4 vom: 01. Juli, Seite 1231-1239 (DE-627)244148767 (DE-600)1429493-X (DE-576)066397693 1388-6150 nnns volume:148 year:2022 number:4 day:01 month:07 pages:1231-1239 https://doi.org/10.1007/s10973-022-11448-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE AR 148 2022 4 01 07 1231-1239 |
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10.1007/s10973-022-11448-8 doi (DE-627)OLC2133944141 (DE-He213)s10973-022-11448-8-p DE-627 ger DE-627 rakwb eng 660 VZ Kurajica, S. verfasserin (orcid)0000-0002-7066-1213 aut Thermal evolution of gels prepared by chelation of aluminum sec-butoxide with ethyl acetoacetate in various amounts 2022 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Akadémiai Kiadó, Budapest, Hungary 2022 Abstract This work presents a thermal evolution study of gels obtained by chelation of aluminum sec-butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and thermo-gravimetric analysis (DTA/TGA), Fourier-transformed infra-red spectroscopy (FTIR) and X-ray diffraction (XRD). It was established that samples with a low Eaa/Asb ratio are mainly amorphous, whilst the samples with greater Eaa/Asb ratio are predominantly chelate. The crystallization of γ-$ Al_{2} $$ O_{3} $ takes place between 600 and 1000 °C in two separate processes for all investigated samples. On the other hand, a complete transition to α-$ Al_{2} $$ O_{3} $ at 1200 °C occurs exclusively in samples with high Eaa/Asb ratio, while it is only partial for samples with low Eaa/Asb ratio. The observed mass loss is in concordance with the hypothesis that the overall gel content in the samples could be represented by a simplified formula Al(Eaa)x$ O_{(3−x)/2} $, where x is the Eaa/Asb ratio. In addition to thermal evolution, the gel-chelate duality of the samples is reflected in the morphology and particle size distribution. Alumina Sol–gel Chelation Thermal analysis Mužina, K. aut Simčić, I. aut Mandić, V. (orcid)0000-0002-1036-0603 aut Enthalten in Journal of thermal analysis and calorimetry Springer International Publishing, 1998 148(2022), 4 vom: 01. Juli, Seite 1231-1239 (DE-627)244148767 (DE-600)1429493-X (DE-576)066397693 1388-6150 nnns volume:148 year:2022 number:4 day:01 month:07 pages:1231-1239 https://doi.org/10.1007/s10973-022-11448-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE AR 148 2022 4 01 07 1231-1239 |
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10.1007/s10973-022-11448-8 doi (DE-627)OLC2133944141 (DE-He213)s10973-022-11448-8-p DE-627 ger DE-627 rakwb eng 660 VZ Kurajica, S. verfasserin (orcid)0000-0002-7066-1213 aut Thermal evolution of gels prepared by chelation of aluminum sec-butoxide with ethyl acetoacetate in various amounts 2022 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Akadémiai Kiadó, Budapest, Hungary 2022 Abstract This work presents a thermal evolution study of gels obtained by chelation of aluminum sec-butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and thermo-gravimetric analysis (DTA/TGA), Fourier-transformed infra-red spectroscopy (FTIR) and X-ray diffraction (XRD). It was established that samples with a low Eaa/Asb ratio are mainly amorphous, whilst the samples with greater Eaa/Asb ratio are predominantly chelate. The crystallization of γ-$ Al_{2} $$ O_{3} $ takes place between 600 and 1000 °C in two separate processes for all investigated samples. On the other hand, a complete transition to α-$ Al_{2} $$ O_{3} $ at 1200 °C occurs exclusively in samples with high Eaa/Asb ratio, while it is only partial for samples with low Eaa/Asb ratio. The observed mass loss is in concordance with the hypothesis that the overall gel content in the samples could be represented by a simplified formula Al(Eaa)x$ O_{(3−x)/2} $, where x is the Eaa/Asb ratio. In addition to thermal evolution, the gel-chelate duality of the samples is reflected in the morphology and particle size distribution. Alumina Sol–gel Chelation Thermal analysis Mužina, K. aut Simčić, I. aut Mandić, V. (orcid)0000-0002-1036-0603 aut Enthalten in Journal of thermal analysis and calorimetry Springer International Publishing, 1998 148(2022), 4 vom: 01. Juli, Seite 1231-1239 (DE-627)244148767 (DE-600)1429493-X (DE-576)066397693 1388-6150 nnns volume:148 year:2022 number:4 day:01 month:07 pages:1231-1239 https://doi.org/10.1007/s10973-022-11448-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE AR 148 2022 4 01 07 1231-1239 |
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10.1007/s10973-022-11448-8 doi (DE-627)OLC2133944141 (DE-He213)s10973-022-11448-8-p DE-627 ger DE-627 rakwb eng 660 VZ Kurajica, S. verfasserin (orcid)0000-0002-7066-1213 aut Thermal evolution of gels prepared by chelation of aluminum sec-butoxide with ethyl acetoacetate in various amounts 2022 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Akadémiai Kiadó, Budapest, Hungary 2022 Abstract This work presents a thermal evolution study of gels obtained by chelation of aluminum sec-butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and thermo-gravimetric analysis (DTA/TGA), Fourier-transformed infra-red spectroscopy (FTIR) and X-ray diffraction (XRD). It was established that samples with a low Eaa/Asb ratio are mainly amorphous, whilst the samples with greater Eaa/Asb ratio are predominantly chelate. The crystallization of γ-$ Al_{2} $$ O_{3} $ takes place between 600 and 1000 °C in two separate processes for all investigated samples. On the other hand, a complete transition to α-$ Al_{2} $$ O_{3} $ at 1200 °C occurs exclusively in samples with high Eaa/Asb ratio, while it is only partial for samples with low Eaa/Asb ratio. The observed mass loss is in concordance with the hypothesis that the overall gel content in the samples could be represented by a simplified formula Al(Eaa)x$ O_{(3−x)/2} $, where x is the Eaa/Asb ratio. In addition to thermal evolution, the gel-chelate duality of the samples is reflected in the morphology and particle size distribution. Alumina Sol–gel Chelation Thermal analysis Mužina, K. aut Simčić, I. aut Mandić, V. (orcid)0000-0002-1036-0603 aut Enthalten in Journal of thermal analysis and calorimetry Springer International Publishing, 1998 148(2022), 4 vom: 01. Juli, Seite 1231-1239 (DE-627)244148767 (DE-600)1429493-X (DE-576)066397693 1388-6150 nnns volume:148 year:2022 number:4 day:01 month:07 pages:1231-1239 https://doi.org/10.1007/s10973-022-11448-8 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE AR 148 2022 4 01 07 1231-1239 |
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Kurajica, S. |
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10.1007/s10973-022-11448-8 |
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thermal evolution of gels prepared by chelation of aluminum sec-butoxide with ethyl acetoacetate in various amounts |
| title_auth |
Thermal evolution of gels prepared by chelation of aluminum sec-butoxide with ethyl acetoacetate in various amounts |
| abstract |
Abstract This work presents a thermal evolution study of gels obtained by chelation of aluminum sec-butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and thermo-gravimetric analysis (DTA/TGA), Fourier-transformed infra-red spectroscopy (FTIR) and X-ray diffraction (XRD). It was established that samples with a low Eaa/Asb ratio are mainly amorphous, whilst the samples with greater Eaa/Asb ratio are predominantly chelate. The crystallization of γ-$ Al_{2} $$ O_{3} $ takes place between 600 and 1000 °C in two separate processes for all investigated samples. On the other hand, a complete transition to α-$ Al_{2} $$ O_{3} $ at 1200 °C occurs exclusively in samples with high Eaa/Asb ratio, while it is only partial for samples with low Eaa/Asb ratio. The observed mass loss is in concordance with the hypothesis that the overall gel content in the samples could be represented by a simplified formula Al(Eaa)x$ O_{(3−x)/2} $, where x is the Eaa/Asb ratio. In addition to thermal evolution, the gel-chelate duality of the samples is reflected in the morphology and particle size distribution. © Akadémiai Kiadó, Budapest, Hungary 2022 |
| abstractGer |
Abstract This work presents a thermal evolution study of gels obtained by chelation of aluminum sec-butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and thermo-gravimetric analysis (DTA/TGA), Fourier-transformed infra-red spectroscopy (FTIR) and X-ray diffraction (XRD). It was established that samples with a low Eaa/Asb ratio are mainly amorphous, whilst the samples with greater Eaa/Asb ratio are predominantly chelate. The crystallization of γ-$ Al_{2} $$ O_{3} $ takes place between 600 and 1000 °C in two separate processes for all investigated samples. On the other hand, a complete transition to α-$ Al_{2} $$ O_{3} $ at 1200 °C occurs exclusively in samples with high Eaa/Asb ratio, while it is only partial for samples with low Eaa/Asb ratio. The observed mass loss is in concordance with the hypothesis that the overall gel content in the samples could be represented by a simplified formula Al(Eaa)x$ O_{(3−x)/2} $, where x is the Eaa/Asb ratio. In addition to thermal evolution, the gel-chelate duality of the samples is reflected in the morphology and particle size distribution. © Akadémiai Kiadó, Budapest, Hungary 2022 |
| abstract_unstemmed |
Abstract This work presents a thermal evolution study of gels obtained by chelation of aluminum sec-butoxide (Asb) with ethyl acetoacetate (Eaa) in various amounts. Samples were characterized by scanning electron microscopy (SEM), low angle laser light scattering (LALLS), differential thermal and thermo-gravimetric analysis (DTA/TGA), Fourier-transformed infra-red spectroscopy (FTIR) and X-ray diffraction (XRD). It was established that samples with a low Eaa/Asb ratio are mainly amorphous, whilst the samples with greater Eaa/Asb ratio are predominantly chelate. The crystallization of γ-$ Al_{2} $$ O_{3} $ takes place between 600 and 1000 °C in two separate processes for all investigated samples. On the other hand, a complete transition to α-$ Al_{2} $$ O_{3} $ at 1200 °C occurs exclusively in samples with high Eaa/Asb ratio, while it is only partial for samples with low Eaa/Asb ratio. The observed mass loss is in concordance with the hypothesis that the overall gel content in the samples could be represented by a simplified formula Al(Eaa)x$ O_{(3−x)/2} $, where x is the Eaa/Asb ratio. In addition to thermal evolution, the gel-chelate duality of the samples is reflected in the morphology and particle size distribution. © Akadémiai Kiadó, Budapest, Hungary 2022 |
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| title_short |
Thermal evolution of gels prepared by chelation of aluminum sec-butoxide with ethyl acetoacetate in various amounts |
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https://doi.org/10.1007/s10973-022-11448-8 |
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Mužina, K. Simčić, I. Mandić, V. |
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Mužina, K. Simčić, I. Mandić, V. |
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2024-07-03T22:31:27.262Z |
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