Differential Scanning Calorimetry Evaluates Relative Proportions and Strength of Acid-Sites in Catalytic Materials and Adsorbents Alumina and Amorphous Silica-Alumina

1987 ◽  
Vol 20 (4) ◽  
pp. 553-559 ◽  
Author(s):  
A. K. Aboul-gheit ◽  
M. A. Al-hajjaji
Keyword(s):  
Differential Scanning Calorimetry ◽  
Amorphous Silica ◽  
Acid Sites ◽  
Scanning Calorimetry ◽  
Catalytic Materials ◽  
Silica Alumina

γ-Alumina and Amorphous Silica–Alumina: Structural Features, Acid Sites and the Role of Adsorbed Water

2017 ◽  
Vol 60 (19-20) ◽  
pp. 1554-1564 ◽  
Author(s):  
Vicente Sanchez Escribano ◽  
Gabriella Garbarino ◽  
Elisabetta Finocchio ◽  
Guido Busca
Keyword(s):  
Amorphous Silica ◽  
Adsorbed Water ◽  
Structural Features ◽  
Acid Sites ◽  
Silica Alumina

scholarly journals Shedding light on the atomic-scale structure of amorphous silica–alumina and its Brønsted acid sites

2019 ◽  
Vol 21 (35) ◽  
pp. 19529-19537 ◽  
Author(s):  
Frédéric A. Perras ◽  
Zichun Wang ◽  
Takeshi Kobayashi ◽  
Alfons Baiker ◽  
Jun Huang ◽  
...  
Keyword(s):  
Amorphous Silica ◽  
Acid Sites ◽  
Atomic Scale ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Brønsted Acid Sites ◽  
Brönsted Acid ◽  
Silica Alumina ◽  
Brönsted Acid Sites ◽  
Bronsted Acid Sites

Advanced solid-state NMR methods, using dynamic nuclear polarization (DNP), are applied to probe the atomic-scale bulk structure of amorphous silica–alumina catalysts prepared by flame-spray pyrolysis, and the structure of their Brønsted acid sites.

scholarly journals Density functional theory simulations of complex catalytic materials in reactive environments: beyond the ideal surface at low coverage

2014 ◽  
Vol 4 (9) ◽  
pp. 2797-2813 ◽  
Author(s):  
Céline Chizallet ◽  
Pascal Raybaud
Keyword(s):  
Density Functional Theory ◽  
Amorphous Silica ◽  
Density Functional ◽  
Surface Model ◽  
Functional Theory ◽  
Catalytic Materials ◽  
Platinum Particles ◽  
Silica Alumina ◽  
Low Coverage ◽  
The Ideal

Advanced DFT models of complex catalysts, such as amorphous silica–alumina and supported subnanometric platinum particles, bridge the gap between the ideal surface model and the industrial catalyst.

Formation of acid sites in amorphous silica-alumina

2010 ◽  
Vol 269 (1) ◽  
pp. 201-218 ◽  
Author(s):  
E.J.M. Hensen ◽  
D.G. Poduval ◽  
P.C.M.M. Magusin ◽  
A.E. Coumans ◽  
J.A.R. van Veen
Keyword(s):  
Amorphous Silica ◽  
Acid Sites ◽  
Silica Alumina

Methyltrioxorhenium Interactions with Lewis Acid Sites of an Amorphous Silica−Alumina

2006 ◽  
Vol 25 (9) ◽  
pp. 2157-2165 ◽  
Author(s):  
Anthony W. Moses ◽  
Naseem A. Ramsahye ◽  
Christina Raab ◽  
Heather D. Leifeste ◽  
Swarup Chattopadhyay ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Amorphous Silica ◽  
Acid Sites ◽  
Lewis Acid Sites ◽  
Silica Alumina
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