Journal
NATURE COMMUNICATIONS
Volume 11, Issue 1, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-019-13907-7
Keywords
-
Categories
Funding
- Australian Research Council Discovery Projects [DP150103842, DP180104010, DE190101618]
- University of Sydney SOAR fellowship
- Region Nord/Pas de Calais (France)
- Europe (FEDER)
- CNRS
- Ministere de l'Enseignement Superieur et de la Recherche
- CPER
- Chevreul Institute (FR 2638)
- Infrastructure de Recherche en Resonance Magnetique Nucleaire a Tres Haut Champ (IR-RMN, FR 3050)
- ENSCL
- European Union [731019]
- Deutsche Forschungsgemeinsschaft (DFG) [407513992]
- International Project Development Funding
- [ANR-17-ERC2-0022]
- [ANR-18-CE08-0015-01]
Ask authors/readers for more resources
Amorphous silica-aluminas (ASAs) are widely used in acid-catalyzed C-H activation reactions and biomass conversions in large scale, which can be promoted by increasing the strength of surface Bronsted acid sites (BAS). Here, we demonstrate the first observation on a synergistic effect caused by two neighboring Al centers interacting with the same silanol group in flame-made ASAs with high Al content. The two close Al centers decrease the electron density on the silanol oxygen and thereby enhance its acidity, which is comparable to that of dealuminated zeolites, while ASAs with small or moderate Al contents provide mainly moderate acidity, much lower than that of zeolites. The ASAs with enhanced acidity exhibit outstanding performances in C-H bond activation of benzene and glucose dehydration to 5-hydroxymethylfurfural, simultaneously with an excellent calcination stability and resistance to leaching, and they offer an interesting potential for a wide range of acid and multifunctional catalysis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available