| Autor: |
M.H. Zahedi-Niaki, Micha Rat, Serge Kaliaguine, Trong-On Do |
| Rok vydání: |
2007 |
| Předmět: |
|
| DOI: |
10.1016/s0167-2991(07)81064-0 |
| Popis: |
Two types of sulfonic acid functionalized mesoporous materials ASMES (arene sulfonic acid ethane-silica) and ASSBA-15 (arene sulfonic acid SBA-15), were synthesized in one step and characterized using XRD, BET, TEM and 13C MAS NMR. Liquid phase acetalization of heptanal by 1-butanol was performed at four different temperatures to study the catalytic properties of these hybrid organic-inorganic mesoporous solids. HY zeolite and Amberlyst-15 were used as solid acid catalysts for comparison. The results revealed that arene sulfonic acid mesoporous organosilicas exhibit a good catalytic activity. High acetal yield and selectivity are associated with their high hydrophobicity or/and large pores. A deactivation of these catalysts was also observed and discussed in relation with thermodynamic equilibrium limitation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
