Synthesis of solid acid catalysts for esterification with the assistance of elevated pressure
| Autor: | Ardian Nurwita, Maciej Trejda, Dorota Kryszak |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Niobium
chemistry.chemical_element 02 engineering and technology General Chemistry Solid acid Mesoporous silica 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis Adsorption chemistry X-ray photoelectron spectroscopy Mechanics of Materials Elemental analysis Desorption General Materials Science 0210 nano-technology Nuclear chemistry |
| Zdroj: | Microporous and Mesoporous Materials. 278:115-120 |
| ISSN: | 1387-1811 |
| Popis: | Acidic catalysts dedicated for esterification processes were prepared by immobilization of (3-mercaptopropyl)trimethoxysilane (MPTMS) on mesoporous silica and niobiosilicate material using a new methodology, i.e. solvothermal technique with increased pressure. The structure and surface properties of the samples obtained were examined using N2 adsorption/desorption, XRD, TEM, XPS and elemental analysis. The impact of modification technique as well as the presence of niobium in the sample on the acidity of final materials was investigated. It was found that the application of external pressure during the solvothermal modification of mesoporous silica with MPTMS allows obtaining materials with a greater number of acidic sites. These samples showed a high activity and stability in esterification of acetic and propionic acid with n-butanol and n-hexanol. |
| Databáze: | OpenAIRE |
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