Synthesis and characterization of novel ZrO2-SiO2 mixed oxides
In this study the mixed oxides ZrO2-SiO2, were synthesized by the sol-gel method with a molar ratio of 95:5 (Si/metal) and characterized by X-ray diffraction, absorption-desorption of N2, Fourier transform infrared spectroscopy, thermal gravimetric analysis, temperature-programmed desorption of ammo...
| Main Authors: | , , |
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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)
2014-04-01
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| Series: | Materials Research |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000300023&tlng=en |
| _version_ | 1798014654051516416 |
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| author | Milena Araújo Ferreira e Santos Ivon Pinheiro Lôbo Rosenira Serpa da Cruz |
| author_facet | Milena Araújo Ferreira e Santos Ivon Pinheiro Lôbo Rosenira Serpa da Cruz |
| author_sort | Milena Araújo Ferreira e Santos |
| collection | DOAJ |
| description | In this study the mixed oxides ZrO2-SiO2, were synthesized by the sol-gel method with a molar ratio of 95:5 (Si/metal) and characterized by X-ray diffraction, absorption-desorption of N2, Fourier transform infrared spectroscopy, thermal gravimetric analysis, temperature-programmed desorption of ammonia, and acidity test by titration. The synthesized materials, which are amorphous to X-rays, are composed of a mixture of micro- and mesopores. They show a higher acid strength than the separate oxides, indicating that the ZrO2 is highly dispersed in the silica matrix. |
| first_indexed | 2024-04-11T15:20:45Z |
| format | Article |
| id | doaj.art-db4996ad1f5541f98fbef7833c5588b2 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-04-11T15:20:45Z |
| publishDate | 2014-04-01 |
| 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-db4996ad1f5541f98fbef7833c5588b22022-12-22T04:16:22ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392014-04-0117370070710.1590/S1516-14392014005000046Synthesis and characterization of novel ZrO2-SiO2 mixed oxidesMilena Araújo Ferreira e Santos0Ivon Pinheiro Lôbo1Rosenira Serpa da Cruz2Universidade Estadual de Santa CruzUniversidade Estadual de Santa CruzUniversidade Estadual de Santa CruzIn this study the mixed oxides ZrO2-SiO2, were synthesized by the sol-gel method with a molar ratio of 95:5 (Si/metal) and characterized by X-ray diffraction, absorption-desorption of N2, Fourier transform infrared spectroscopy, thermal gravimetric analysis, temperature-programmed desorption of ammonia, and acidity test by titration. The synthesized materials, which are amorphous to X-rays, are composed of a mixture of micro- and mesopores. They show a higher acid strength than the separate oxides, indicating that the ZrO2 is highly dispersed in the silica matrix.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000300023&tlng=enmixed oxidesheterogeneous catalystmethylationsulfation |
| spellingShingle | Milena Araújo Ferreira e Santos Ivon Pinheiro Lôbo Rosenira Serpa da Cruz Synthesis and characterization of novel ZrO2-SiO2 mixed oxides Materials Research mixed oxides heterogeneous catalyst methylation sulfation |
| title | Synthesis and characterization of novel ZrO2-SiO2 mixed oxides |
| title_full | Synthesis and characterization of novel ZrO2-SiO2 mixed oxides |
| title_fullStr | Synthesis and characterization of novel ZrO2-SiO2 mixed oxides |
| title_full_unstemmed | Synthesis and characterization of novel ZrO2-SiO2 mixed oxides |
| title_short | Synthesis and characterization of novel ZrO2-SiO2 mixed oxides |
| title_sort | synthesis and characterization of novel zro2 sio2 mixed oxides |
| topic | mixed oxides heterogeneous catalyst methylation sulfation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000300023&tlng=en |
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