Γ-AlO-Supported XMo Anderson Heteropolyoxomolybdates: Adsorption Studies for X = Te, Al, Co, Cr and Ni by DR Spectroscopy and TPR Analysis
The support–overlayer adsorptive interactions, generated when solutions of Anderson heteropolyoxomolybdates were supported as a monolayer on γ-Al 2 O 3 by means of the equilibrium adsorption method, were studied by XRD analysis, DR spectroscopy, electron microscopy (SEM–EDAX) and TPR methods. The ad...
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| Format: | Article |
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SAGE Publishing
2000-09-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263617001493657 |
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| author | Carmen I. Cabello Irma L. Botto Franco Cabrerizo Maria G. González Horacio J. Thomas |
| author_facet | Carmen I. Cabello Irma L. Botto Franco Cabrerizo Maria G. González Horacio J. Thomas |
| author_sort | Carmen I. Cabello |
| collection | DOAJ |
| description | The support–overlayer adsorptive interactions, generated when solutions of Anderson heteropolyoxomolybdates were supported as a monolayer on γ-Al 2 O 3 by means of the equilibrium adsorption method, were studied by XRD analysis, DR spectroscopy, electron microscopy (SEM–EDAX) and TPR methods. The adsorption isotherms and corresponding adsorption parameters (number of active sites and adsorption constants) of the γ-Al 2 O 3 -supported ammonium heptamolybdate were obtained and discussed. The following sequence of adsorption strength was suggested: CoMo 6 > CrMo 6 > TeMo 6 ~ AlMo 6 > NiMo 6 . The effectiveness of the TPR technique as a tool for elucidating interaction effects was clearly demonstrated. The formation of a γ-Al 2 O 3 -supported Te–Mo mixed valence oxide appears to provide new and interesting catalytic possibilities. |
| format | Article |
| id | doaj-art-834bdd3faaa64bb887d1e0d326d16460 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2000-09-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-834bdd3faaa64bb887d1e0d326d164602025-01-03T00:11:14ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382000-09-011810.1260/0263617001493657Γ-AlO-Supported XMo Anderson Heteropolyoxomolybdates: Adsorption Studies for X = Te, Al, Co, Cr and Ni by DR Spectroscopy and TPR AnalysisCarmen I. Cabello0Irma L. BottoFranco Cabrerizo1Maria G. González2Horacio J. Thomas3 Centro de Investigación y Desarrollo en Procesos Cataliticos CINDECA, CONICET-Universidad Nacional de La Plata, La Plata 1900, Argentina. (2) Centro de Quimica Inorgánica CEQUINOR, CONICET-Universidad Nacional de La Plata, La Plata 1900, Argentina Centro de Investigación y Desarrollo en Procesos Cataliticos CINDECA, CONICET-Universidad Nacional de La Plata, La Plata 1900, Argentina. (2) Centro de Quimica Inorgánica CEQUINOR, CONICET-Universidad Nacional de La Plata, La Plata 1900, Argentina Centro de Investigación y Desarrollo en Procesos Cataliticos CINDECA, CONICET-Universidad Nacional de La Plata, La Plata 1900, Argentina. (2) Centro de Quimica Inorgánica CEQUINOR, CONICET-Universidad Nacional de La Plata, La Plata 1900, Argentina Centro de Investigación y Desarrollo en Procesos Cataliticos CINDECA, CONICET-Universidad Nacional de La Plata, La Plata 1900, Argentina. (2) Centro de Quimica Inorgánica CEQUINOR, CONICET-Universidad Nacional de La Plata, La Plata 1900, ArgentinaThe support–overlayer adsorptive interactions, generated when solutions of Anderson heteropolyoxomolybdates were supported as a monolayer on γ-Al 2 O 3 by means of the equilibrium adsorption method, were studied by XRD analysis, DR spectroscopy, electron microscopy (SEM–EDAX) and TPR methods. The adsorption isotherms and corresponding adsorption parameters (number of active sites and adsorption constants) of the γ-Al 2 O 3 -supported ammonium heptamolybdate were obtained and discussed. The following sequence of adsorption strength was suggested: CoMo 6 > CrMo 6 > TeMo 6 ~ AlMo 6 > NiMo 6 . The effectiveness of the TPR technique as a tool for elucidating interaction effects was clearly demonstrated. The formation of a γ-Al 2 O 3 -supported Te–Mo mixed valence oxide appears to provide new and interesting catalytic possibilities.https://doi.org/10.1260/0263617001493657 |
| spellingShingle | Carmen I. Cabello Irma L. Botto Franco Cabrerizo Maria G. González Horacio J. Thomas Γ-AlO-Supported XMo Anderson Heteropolyoxomolybdates: Adsorption Studies for X = Te, Al, Co, Cr and Ni by DR Spectroscopy and TPR Analysis Adsorption Science & Technology |
| title | Γ-AlO-Supported XMo Anderson Heteropolyoxomolybdates: Adsorption Studies for X = Te, Al, Co, Cr and Ni by DR Spectroscopy and TPR Analysis |
| title_full | Γ-AlO-Supported XMo Anderson Heteropolyoxomolybdates: Adsorption Studies for X = Te, Al, Co, Cr and Ni by DR Spectroscopy and TPR Analysis |
| title_fullStr | Γ-AlO-Supported XMo Anderson Heteropolyoxomolybdates: Adsorption Studies for X = Te, Al, Co, Cr and Ni by DR Spectroscopy and TPR Analysis |
| title_full_unstemmed | Γ-AlO-Supported XMo Anderson Heteropolyoxomolybdates: Adsorption Studies for X = Te, Al, Co, Cr and Ni by DR Spectroscopy and TPR Analysis |
| title_short | Γ-AlO-Supported XMo Anderson Heteropolyoxomolybdates: Adsorption Studies for X = Te, Al, Co, Cr and Ni by DR Spectroscopy and TPR Analysis |
| title_sort | γ alo supported xmo anderson heteropolyoxomolybdates adsorption studies for x te al co cr and ni by dr spectroscopy and tpr analysis |
| url | https://doi.org/10.1260/0263617001493657 |
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