ArticleNature communications2020
Acidity enhancement through synergy of penta- and tetra-coordinated aluminum species in amorphous silica networks.
Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- Shifting paradigms: the crucial role of zeolite acid sites in dye adsorption mechanisms.RSC advances · 2026Review
- Local Structure and Surface Acidity of Overlayers Prepared by Atomic Layer Deposition of Silica on Alumina.Chemistry of materials : a publication of the American Chemical Society · 2025Article
- Improving the performance of ASA in the DAC of 2,5-DMF and ethylene.Catalysis science & technology · 2023Article
- Clarifying the Dopant Local Structure and Effect on Ionic Conductivity in Garnet Solid-State Electrolytes for Lithium-Ion Batteries.Chemistry of materials : a publication of the American Chemical Society · 2023Article
- Atomic Layer Deposition of the Geometry Separated Lewis and Brønsted Acid Sites for Cascade Glucose Conversion.JACS Au · 2023Article
- Tuning the catalytic acidity in AlCatalysis science & technology · 2022Article
- Revealing Brønsted Acidic Bridging SiOHAl Groups on Amorphous Silica-Alumina by Ultrahigh Field Solid-State NMR.The journal of physical chemistry letters · 2021Article
- Dual Active Sites on Molybdenum/ZSM-5 Catalyst for Methane Dehydroaromatization: Insights from Solid-State NMR Spectroscopy.Angewandte Chemie (International ed. in English) · 2021Article
- Multigraded Heterojunction Hole Extraction Layer of ZIF-CoSmall science · 2021Article
- Article
- Atom probe tomography.Nature reviews. Methods primers · 2021Article
- Flame-made Particles for Sensors, Catalysis, and Energy Storage Applications.Energy & fuels : an American Chemical Society journal · 2020Review
Corrections and comments
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
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 Brønsted 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.
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Registered trials
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