scholarly journals Atomistic Investigations of the Effects of Si/Al Ratio and Al Distribution on the Adsorption Selectivity of n-Alkanes in Brønsted-Acid Zeolites

2018 ◽  
Vol 122 (17) ◽  
pp. 9397-9410 ◽  
Author(s):  
Chi-Ta Yang ◽  
Amber Janda ◽  
Alexis T. Bell ◽  
Li-Chiang Lin
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
Adsorption Selectivity ◽  
Brönsted Acid ◽  
Acid Zeolites ◽  
Al Distribution

Selecting strong Brønsted acid zeolites through screening from a database of hypothetical frameworks

2017 ◽  
Vol 19 (22) ◽  
pp. 14702-14707 ◽  
Author(s):  
Taku Matsuoka ◽  
Laurent Baumes ◽  
Naonobu Katada ◽  
Abhijit Chatterjee ◽  
German Sastre
Keyword(s):  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brønsted Acidity ◽  
Brönsted Acidity ◽  
Brönsted Acid ◽  
Acid Zeolites

New candidate zeolites with potentially strong Brønsted acidity have been computationally selected from the Treacy/Foster database of prospective zeolites.

scholarly journals Fractal Dimension of Active-Site Models of Zeolite Catalysts

2006 ◽  
Vol 2006 ◽  
pp. 1-9 ◽  
Author(s):  
Francisco Torrens ◽  
Gloria Castellano
Keyword(s):  
Fractal Dimension ◽  
Active Site ◽  
Topological Indices ◽  
Zeolite Catalysts ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Si Units ◽  
Brönsted Acid ◽  
Acid Zeolites ◽  
Fractal Character

A method for the calculation offractalsurfaces of crystals is presented. Thefractal dimensionDof fragments of zeolites is calculated. Results compare well with reference calculations (GEPOL). The active site of Brønsted acid zeolites is modeled by a set of Al–OH–Si units. These units form 2–12-membered rings. Topological indices for the different active-site models are calculated. The comparison between GEPOL and SURMO2 allows calculating the active-site indices. Most cavities show no fractal character, while for the 6–8-unit rings,Dlies in the range 4.0–4.3. The 6-ring shows the greatestDand is expected to be the most reactive.

Solvent-Free Acetalization of Glycerol with n-Octanal using Combined Brønsted Acid-Surfactant Catalyst

2017 ◽  
Vol 54 (1) ◽  
pp. 54-63 ◽  
Author(s):  
Xu Li ◽  
Lan Wu ◽  
Qiong Tang ◽  
Jinxiang Dong
Keyword(s):  
Solvent Free ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brönsted Acid

Synthetic Scope of Brønsted Acid-Catalyzed Reactions of Carbonyl Compounds and Ethyl Diazoacetate

2021 ◽  
Author(s):  
Mizzanoor Rahaman ◽  
M. Shahnawaz Ali ◽  
Khorshada Jahan ◽  
Damon Hinz ◽  
Jawad Bin Belayet ◽  
...  
Keyword(s):  
Carbonyl Compounds ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Ethyl Diazoacetate ◽  
Brönsted Acid ◽  
Acid Catalyzed ◽  
Catalyzed Reactions

scholarly journals Tailoring Lewis/Brønsted acid properties of MOF nodes via hydrothermal and solvothermal synthesis: simple approach with exceptional catalytic implications

2021 ◽  
Author(s):  
Sergio Rojas-Buzo ◽  
Benjamin Bohigues ◽  
Christian W. Lopes ◽  
Débora M. Meira ◽  
Mercedes Boronat ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Active Site ◽  
Solvothermal Synthesis ◽  
Simple Approach ◽  
Organic Reactions ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Acid Properties ◽  
Brönsted Acid

The Brønsted/Lewis acid properties of Hf-MOF-808 can be tuned by simply controlling the solvent employed in its synthesis, with direct catalytic implications on the activity and selectivity of organic reactions sensitive to the active site nature.

Sign in / Sign up

Export Citation Format

Share Document