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| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.creator | Baronetti, Graciela Teresita | - |
| dc.creator | Thomas, Horacio Jorge | - |
| dc.creator | Querini, Carlos Alberto | - |
| dc.date | 2018-05-08T15:07:36Z | - |
| dc.date | 2018-05-08T15:07:36Z | - |
| dc.date | 2001-09 | - |
| dc.date | 2018-03-19T17:27:35Z | - |
| dc.date.accessioned | 2019-04-29T15:45:36Z | - |
| dc.date.available | 2019-04-29T15:45:36Z | - |
| dc.date.issued | 2001-09 | - |
| dc.identifier | Baronetti, Graciela Teresita; Thomas, Horacio Jorge; Querini, Carlos Alberto; Wells–Dawson heteropolyacid supported on silica: isobutane alkylation with C4 olefins; Elsevier Science; Applied Catalysis A: General; 217; 1-2; 9-2001; 131-141 | - |
| dc.identifier | 0926-860X | - |
| dc.identifier | http://hdl.handle.net/11336/44417 | - |
| dc.identifier | CONICET Digital | - |
| dc.identifier | CONICET | - |
| dc.identifier.uri | http://rodna.bn.gov.ar:8080/jspui/handle/bnmm/301328 | - |
| dc.description | The alkylation of isobutane with C4 olefins is studied, using heteropolyacids (HPA) with Wells–Dawson (WD) structure supported on silica (WD/SiO2). The catalytic performance of these catalysts is compared with a lanthanum-exchanged Y-zeolite catalyst. The loading of the HPA on silica was varied between 9 and 28 wt.%. These catalysts have activity for trimethylpentanes (TMP) production. The selectivity towards these products is not as high as in the case of the lanthanum containing Y-zeolite. The acidity of WD/SiO2 catalysts increases as the loading increases, as seen by MAS-NMR. Correspondingly, a better TMP production is observed. The increase both in acidity and in the TMP production as a function of the WD content is more noticeable at low loading. The coke formed during the reaction requires high temperatures, 550°C approximately, in order to be fully removed with an oxygen containing carrier gas. The temperature-programmed oxidation (TPO) profile of this coke displays two peaks, the first one between 80 and 300°C associated with hydrocarbons that are released upon heating, and the second between 300 and 550°C, associated with coke that changed its structure during the heating. A regeneration at intermediate temperatures, e.g. 300°C, removes the coke that corresponds to the first peak, but does not restore the initial activity. If the regeneration is carried out at higher temperatures, e.g. 500°C, most of the coke is removed, but this treatment leads to changes in the structure of the HPA, as indicated by FTIR and MAS-NMR analysis. Regeneration with O3 at low temperature (125°C) is effective both for coke removal and to recover the catalytic activity. | - |
| dc.description | Fil: Baronetti, Graciela Teresita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina | - |
| dc.description | Fil: Thomas, Horacio Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas "Dr. Jorge J. Ronco". Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Ciencias Aplicadas; Argentina | - |
| dc.description | Fil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.format | application/pdf | - |
| dc.language | eng | - |
| dc.publisher | Elsevier Science | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/S0926-860X(01)00576-2 | - |
| dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0926860X01005762 | - |
| dc.rights | info:eu-repo/semantics/restrictedAccess | - |
| dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | - |
| dc.source | reponame:CONICET Digital (CONICET) | - |
| dc.source | instname:Consejo Nacional de Investigaciones Científicas y Técnicas | - |
| dc.source | instacron:CONICET | - |
| dc.source.uri | http://hdl.handle.net/11336/18804 | - |
| dc.subject | Isobutane alkylation | - |
| dc.subject | Heteropolyacids | - |
| dc.subject | Wells-Dawson | - |
| dc.subject | Regeneration | - |
| dc.subject | Otras Ingeniería Química | - |
| dc.subject | Ingeniería Química | - |
| dc.subject | INGENIERÍAS Y TECNOLOGÍAS | - |
| dc.title | Wells–Dawson heteropolyacid supported on silica: isobutane alkylation with C4 olefins | - |
| dc.type | info:eu-repo/semantics/article | - |
| dc.type | info:eu-repo/semantics/publishedVersion | - |
| dc.type | info:ar-repo/semantics/articulo | - |
| Aparece en las colecciones: | CONICET | |
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