The Structure and Thermal Properties of Solid Ternary Compounds Forming with Ca(2+), Al(3+) and Heptagluconate Ions †

In the present work, the structure and thermal stability of Ca–Al mixed-metal compounds, relevant in the Bayer process as intermediates, have been investigated. X-ray diffraction (XRD) measurements revealed the amorphous morphology of the compounds, which was corroborated by SEM-EDX measurements. Th...

Descripción completa

Detalles Bibliográficos
Autores principales: Buckó, Ákos, Kása, Zsolt, Szabados, Márton, Kutus, Bence, Berkesi, Ottó, Kónya, Zoltán, Kukovecz, Ákos, Sipos, Pál, Pálinkó, István
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7587368/
https://www.ncbi.nlm.nih.gov/pubmed/33066653
http://dx.doi.org/10.3390/molecules25204715
_version_ 1783600162016329728
author Buckó, Ákos
Kása, Zsolt
Szabados, Márton
Kutus, Bence
Berkesi, Ottó
Kónya, Zoltán
Kukovecz, Ákos
Sipos, Pál
Pálinkó, István
author_facet Buckó, Ákos
Kása, Zsolt
Szabados, Márton
Kutus, Bence
Berkesi, Ottó
Kónya, Zoltán
Kukovecz, Ákos
Sipos, Pál
Pálinkó, István
author_sort Buckó, Ákos
collection PubMed
description In the present work, the structure and thermal stability of Ca–Al mixed-metal compounds, relevant in the Bayer process as intermediates, have been investigated. X-ray diffraction (XRD) measurements revealed the amorphous morphology of the compounds, which was corroborated by SEM-EDX measurements. The results of ICP-OES and UV-Vis experiments suggested the formation of three possible ternary calcium aluminum heptagluconate (Ca-Al-Hpgl) compounds, with the formulae of CaAlHpgl(OH)(4)(0), Ca(2)AlHpgl(2)(OH)(5)(0) and Ca(3)Al(2)Hpgl(3)(OH)(9)(0). Additional IR and Raman experiments revealed the centrally symmetric arrangement of heptagluconate around the metal ion. The increased thermal stability was demonstrated by thermal analysis of the solids and confirmed our findings.
format Online
Article
Text
id pubmed-7587368
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-75873682020-10-29 The Structure and Thermal Properties of Solid Ternary Compounds Forming with Ca(2+), Al(3+) and Heptagluconate Ions † Buckó, Ákos Kása, Zsolt Szabados, Márton Kutus, Bence Berkesi, Ottó Kónya, Zoltán Kukovecz, Ákos Sipos, Pál Pálinkó, István Molecules Article In the present work, the structure and thermal stability of Ca–Al mixed-metal compounds, relevant in the Bayer process as intermediates, have been investigated. X-ray diffraction (XRD) measurements revealed the amorphous morphology of the compounds, which was corroborated by SEM-EDX measurements. The results of ICP-OES and UV-Vis experiments suggested the formation of three possible ternary calcium aluminum heptagluconate (Ca-Al-Hpgl) compounds, with the formulae of CaAlHpgl(OH)(4)(0), Ca(2)AlHpgl(2)(OH)(5)(0) and Ca(3)Al(2)Hpgl(3)(OH)(9)(0). Additional IR and Raman experiments revealed the centrally symmetric arrangement of heptagluconate around the metal ion. The increased thermal stability was demonstrated by thermal analysis of the solids and confirmed our findings. MDPI 2020-10-14 /pmc/articles/PMC7587368/ /pubmed/33066653 http://dx.doi.org/10.3390/molecules25204715 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Buckó, Ákos
Kása, Zsolt
Szabados, Márton
Kutus, Bence
Berkesi, Ottó
Kónya, Zoltán
Kukovecz, Ákos
Sipos, Pál
Pálinkó, István
The Structure and Thermal Properties of Solid Ternary Compounds Forming with Ca(2+), Al(3+) and Heptagluconate Ions †
title The Structure and Thermal Properties of Solid Ternary Compounds Forming with Ca(2+), Al(3+) and Heptagluconate Ions †
title_full The Structure and Thermal Properties of Solid Ternary Compounds Forming with Ca(2+), Al(3+) and Heptagluconate Ions †
title_fullStr The Structure and Thermal Properties of Solid Ternary Compounds Forming with Ca(2+), Al(3+) and Heptagluconate Ions †
title_full_unstemmed The Structure and Thermal Properties of Solid Ternary Compounds Forming with Ca(2+), Al(3+) and Heptagluconate Ions †
title_short The Structure and Thermal Properties of Solid Ternary Compounds Forming with Ca(2+), Al(3+) and Heptagluconate Ions †
title_sort structure and thermal properties of solid ternary compounds forming with ca(2+), al(3+) and heptagluconate ions †
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7587368/
https://www.ncbi.nlm.nih.gov/pubmed/33066653
http://dx.doi.org/10.3390/molecules25204715
work_keys_str_mv AT buckoakos thestructureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT kasazsolt thestructureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT szabadosmarton thestructureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT kutusbence thestructureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT berkesiotto thestructureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT konyazoltan thestructureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT kukoveczakos thestructureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT sipospal thestructureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT palinkoistvan thestructureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT buckoakos structureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT kasazsolt structureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT szabadosmarton structureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT kutusbence structureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT berkesiotto structureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT konyazoltan structureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT kukoveczakos structureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT sipospal structureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions
AT palinkoistvan structureandthermalpropertiesofsolidternarycompoundsformingwithca2al3andheptagluconateions

Ejemplares similares