| Autor: |
Abdallah I. M. Rabee, Gamal A. H. Mekhemer, Amin Osatiashtiani, Mark A. Isaacs, Adam F. Lee, Karen Wilson, Mohamed I. Zaki |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Catalysts, Vol 7, Iss 7, p 204 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2073-4344 |
| DOI: |
10.3390/catal7070204 |
| Popis: |
New insight was gained into the acidity-reactivity relationships of sulfated zirconia (SZ) catalysts prepared via (NH4)2SO4 impregnation of Zr(OH)4 for propanoic acid esterification with methanol. A family of systematically related SZs was characterized by bulk and surface analyses including XRD, XPS, TGA-MS, N2 porosimetry, temperature-programmed propylamine decomposition, and FTIR of adsorbed pyridine, as well as methylbutynol (MBOH) as a reactive probe molecule. Increasing surface sulfation induces a transition from amphoteric character for the parent zirconia and low S loadings |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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