scholarly journals In situ catalytic pyrolysis of lignocellulose using alkali-modified amorphous silica alumina

2012 ◽  
Vol 118 ◽  
pp. 374-381 ◽  
Author(s):  
M. Zabeti ◽  
T.S. Nguyen ◽  
L. Lefferts ◽  
H.J. Heeres ◽  
K. Seshan
Keyword(s):  
Amorphous Silica ◽  
Catalytic Pyrolysis ◽  
Silica Alumina

Products characterization for fast in-situ catalytic pyrolysis of bio-oil over Ni/Al2O3

2021 ◽  
Vol 657 (1) ◽  
pp. 012023
Author(s):  
Zengtong Deng ◽  
Yi Wang ◽  
Song Hu ◽  
Sheng Su ◽  
Long Jiang ◽  
...  
Keyword(s):  
Catalytic Pyrolysis ◽  
Bio Oil

Solar assisted catalytic pyrolysis of chicken-litter waste with in-situ and ex-situ loading of CaO and char

Fuel ◽  
2019 ◽  
Vol 246 ◽  
pp. 408-416 ◽  
Author(s):  
Haftom Weldekidan ◽  
Vladimir Strezov ◽  
Tao Kan ◽  
Ravinder Kumar ◽  
Jing He ◽  
...  
Keyword(s):  
Catalytic Pyrolysis ◽  
Ex Situ ◽  
Chicken Litter

Acidity Characterization of Amorphous Silica–Alumina

2012 ◽  
Vol 116 (40) ◽  
pp. 21416-21429 ◽  
Author(s):  
Emiel J.M. Hensen ◽  
Dilip G. Poduval ◽  
Volkan Degirmenci ◽  
D.A J. Michel Ligthart ◽  
Wenbin Chen ◽  
...  
Keyword(s):  
Amorphous Silica ◽  
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

Characterization of Catalytic Supports by Infrared Spectroscopy and ESCA

1982 ◽  
Vol 36 (4) ◽  
pp. 361-368 ◽  
Author(s):  
Larry F. Wieserman ◽  
David M. Hercules
Keyword(s):  
Infrared Spectroscopy ◽  
Surface Area ◽  
Elevated Temperatures ◽  
Silica Alumina ◽  
Free Hydroxyl ◽  
Ft Ir ◽  
Catalytic Supports ◽  
Silica And Titania

This study compares the properties of γ-alumina, silica, and titania using ESCA and in situ FT-IR. The FWHM's of the O1s and metal 2p ESCA peaks increased systematically from titania to γ alumina; the O1s/metal 2p ESCA peak area ratios were nearly equal for γ-alumina and silica. For titania, however, the value was half that obtained for γ-alumina. In situ FT-IR showed hydroxyl bands with increasing frequencies from titania to silica. Alumina and titania form carbonate-type structures after exposure to CO at elevated temperatures. Silica exhibited no additional bands after CO treatment that could be assigned to physically adsorbed CO or carbonate-type structures. At 100°C, there is a direct correlation between the specific surface area and the intensity of infrared absorbance of the free-hydroxyl and the hydrogen-bonded hydroxyl bands for silica. The intensities of the infrared bands due to matrix modes were not affected by surface area.

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