Kinetics of Formation and Crystal Structure Determination of Sr4Al6O12SO4
The sulphoaluminate of strontium, Sr4Al6O12SO4, was synthesized by solid state reaction from mixture of SrCO3, Al2O3 and SrSO4 (3:3:1 molar ratio) as pellets. The kinetics of formation has been studied in the range of temperature between 850ºC and 1100ºC using quantitative X-ray powder diffraction d...
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2017-02-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000700125&tlng=en |
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| author | José Amparo Rodríguez Estrella Guadalupe Ríos Rodríguez Enrique Rocha Rangel José Manuel Almanza Robles Jesús Torres Elizabeth Refugio García |
| author_facet | José Amparo Rodríguez Estrella Guadalupe Ríos Rodríguez Enrique Rocha Rangel José Manuel Almanza Robles Jesús Torres Elizabeth Refugio García |
| author_sort | José Amparo Rodríguez |
| collection | DOAJ |
| description | The sulphoaluminate of strontium, Sr4Al6O12SO4, was synthesized by solid state reaction from mixture of SrCO3, Al2O3 and SrSO4 (3:3:1 molar ratio) as pellets. The kinetics of formation has been studied in the range of temperature between 850ºC and 1100ºC using quantitative X-ray powder diffraction data (XRD) analysis. Likewise, at room temperature, the crystal structure was determined from conventional X-ray powder diffraction data using direct methods and it was refined by the Rietveld method. The kinetics mechanisms that showed the best fit, were identified as geometrical contraction at grain boundary (R1.1) and nucleation and growing by energy law (P1.1). The activation energy values obtained were 145.47KJmol-1 (R1.1) and 151.35KJmol-1 (P1.1), respectively. The resulting crystal structure was orthorhombic type (a: 13.32802Å, b: 13.34430Å and c: 9.38704Å). The observed adjustment parameters were RB: 0.0985, Rwp: 0.137, Rp: 0.0925 and Chi2: 1.94. |
| first_indexed | 2024-04-11T16:52:23Z |
| format | Article |
| id | doaj.art-98195bd3c6a44758b6bfa004de82bb84 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-11T16:52:23Z |
| publishDate | 2017-02-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-98195bd3c6a44758b6bfa004de82bb842022-12-22T04:13:25ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392017-02-0119suppl 112513210.1590/1980-5373-mr-2016-0639Kinetics of Formation and Crystal Structure Determination of Sr4Al6O12SO4José Amparo RodríguezEstrella Guadalupe Ríos RodríguezEnrique Rocha RangelJosé Manuel Almanza RoblesJesús TorresElizabeth Refugio GarcíaThe sulphoaluminate of strontium, Sr4Al6O12SO4, was synthesized by solid state reaction from mixture of SrCO3, Al2O3 and SrSO4 (3:3:1 molar ratio) as pellets. The kinetics of formation has been studied in the range of temperature between 850ºC and 1100ºC using quantitative X-ray powder diffraction data (XRD) analysis. Likewise, at room temperature, the crystal structure was determined from conventional X-ray powder diffraction data using direct methods and it was refined by the Rietveld method. The kinetics mechanisms that showed the best fit, were identified as geometrical contraction at grain boundary (R1.1) and nucleation and growing by energy law (P1.1). The activation energy values obtained were 145.47KJmol-1 (R1.1) and 151.35KJmol-1 (P1.1), respectively. The resulting crystal structure was orthorhombic type (a: 13.32802Å, b: 13.34430Å and c: 9.38704Å). The observed adjustment parameters were RB: 0.0985, Rwp: 0.137, Rp: 0.0925 and Chi2: 1.94.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000700125&tlng=enSolid state reactionKinetic studyCrystal structureRietveld method |
| spellingShingle | José Amparo Rodríguez Estrella Guadalupe Ríos Rodríguez Enrique Rocha Rangel José Manuel Almanza Robles Jesús Torres Elizabeth Refugio García Kinetics of Formation and Crystal Structure Determination of Sr4Al6O12SO4 Materials Research Solid state reaction Kinetic study Crystal structure Rietveld method |
| title | Kinetics of Formation and Crystal Structure Determination of Sr4Al6O12SO4 |
| title_full | Kinetics of Formation and Crystal Structure Determination of Sr4Al6O12SO4 |
| title_fullStr | Kinetics of Formation and Crystal Structure Determination of Sr4Al6O12SO4 |
| title_full_unstemmed | Kinetics of Formation and Crystal Structure Determination of Sr4Al6O12SO4 |
| title_short | Kinetics of Formation and Crystal Structure Determination of Sr4Al6O12SO4 |
| title_sort | kinetics of formation and crystal structure determination of sr4al6o12so4 |
| topic | Solid state reaction Kinetic study Crystal structure Rietveld method |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000700125&tlng=en |
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