“Click” Silica‐Supported Sulfonic Acid Catalysts with Variable Acid Strength and Surface Polarity
(2019) Chemistry: A European Journal — Vol. 25, n° 27, p. 6753-6762 (2019)
Files
Kasinathan-Lang-ChemPubSoc.pdf
Open Access - Adobe PDF
- 1.68 MB
Details
- Authors
Radhakrishnan, Sambhu 
Schnee, Josefine
- Abstract
- valorization of bioresources. However, there is still a need to develop solid acid catalysts with enhanced acid strength and improved, or tunable, physicochemical profile to enhance the efficiency and sustainability of chemical processes. Here, a modular approach to tune the acid strength and surface polarity of silica‐supported sulfonic acid catalysts, based on a versatile copper‐catalyzed azide–alkyne cycloaddition (CuAAC)‐based anchoring scheme, is presented. The CuAAC‐formed triazole link was used to enhance the activity of the grafted sulfonic acids and to pair the acid sites with secondary hydrophobic functions. The beneficial effects of both the triazolium link and the paired hydrophobic site, as well as the optimal positioning of the sulfonic moiety on the triazole ring, are discussed in model esterification reactions.
- Affiliations
Citations
Kasinathan, P., Lang, C., Radhakrishnan, S., Schnee, J., D’Haese, C., Breynaert, E., Martens, J. A., Gaigneaux, E., Jonas, A., & Fernandes, A. (2019). “Click” Silica‐Supported Sulfonic Acid Catalysts with Variable Acid Strength and Surface Polarity. Chemistry: A European Journal, 25(27), 6753-6762. https://doi.org/10.1002/chem.201806186 (Original work published 2019)