Back to Search
Start Over
Synthesis of Sulfonic Acid Functionalized Silica Honeycombs
- Source :
- Industrial & Engineering Chemistry Research. 52:15293-15297
- Publication Year :
- 2013
- Publisher :
- American Chemical Society (ACS), 2013.
-
Abstract
- A honeycomb-type silica monolith was functionalized with sulfonic acid groups to synthesize a solid acid catalyst for flow reaction systems. The sulfonic acid groups were introduced via anchoring of 3-mercaptopropyltrimethoxysilane (MPTS) on the silica surface and subsequent oxidation using a H2O2 solution. The honeycomb-type monolith used as the substrate was prepared using ice crystals as a template and was found to have a high open frontal area of ≈85% and flow-through macropores (≈27 μm in diameter) that are surrounded by silica walls (≈2 μm in thickness). The catalyst was tested by the liquid phase esterification of ethanol with acetic acid at 333 K in a batch reactor as well as a flow reactor. The catalyst was found to exhibit about 2-fold higher catalytic activity than Amberlyst-15 in a batch reactor. The catalyst also showed a stable catalytic activity for 24 h in a flow reactor.
- Subjects :
- chemistry.chemical_classification
geography
Ethanol
geography.geographical_feature_category
Macropore
General Chemical Engineering
Batch reactor
Substrate (chemistry)
General Chemistry
Sulfonic acid
Industrial and Manufacturing Engineering
Catalysis
chemistry.chemical_compound
Acetic acid
chemistry
Chemical engineering
Organic chemistry
Monolith
Subjects
Details
- ISSN :
- 15205045 and 08885885
- Volume :
- 52
- Database :
- OpenAIRE
- Journal :
- Industrial & Engineering Chemistry Research
- Accession number :
- edsair.doi...........9074a08c6aec7f738ce2b7228e129726