Local structures of metals dispersed on coal. 5. Effect of coal, catalyst precursor, and catalyst preparation method on the structure of iron species during heat treatment and steam gasification

1993 ◽  
Vol 32 (3) ◽  
pp. 409-415 ◽  
Author(s):  
Hiromi Yamashita ◽  
Akira Tomita
Keyword(s):  
Heat Treatment ◽  
Preparation Method ◽  
Catalyst Preparation ◽  
Steam Gasification ◽  
Catalyst Precursor ◽  
Iron Species ◽  
Local Structures

Local structures of metals dispersed on coal. 1. Change of local structure of iron species on brown coal during heat treatment

1989 ◽  
Vol 3 (6) ◽  
pp. 686-692 ◽  
Author(s):  
Hiromi Yamashita ◽  
Yasuo Ohtsuka ◽  
Satohiro Yoshida ◽  
Akira Tomita
Keyword(s):  
Heat Treatment ◽  
Brown Coal ◽  
Local Structure ◽  
Iron Species ◽  
Local Structures

scholarly journals Room-Temperature Nitrophenol Reduction over Ag–CeO2 Catalysts: The Role of Catalyst Preparation Method

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 580 ◽  
Author(s):  
Mariia Chernykh ◽  
Natalia Mikheeva ◽  
Vladimir Zaikovskii ◽  
Mikhail Salaev ◽  
Leonarda F. Liotta ◽  
...  
Keyword(s):  
Room Temperature ◽  
Preparation Method ◽  
Order Rate Constant ◽  
Catalyst Preparation ◽  
First Order ◽  
Impregnation Technique ◽  
Nitrophenol Reduction ◽  
Co Precipitation ◽  
N2 Sorption

Ag–CeO2 catalysts (20 mol % Ag) were synthesized using different techniques (co-precipitation, impregnation, and impregnation of pre-reduced ceria), characterized by XRD, N2 sorption, TEM, H2-TPR methods, and probed in room-temperature p-nitrophenol reduction into p-aminophenol in aqueous solution at atmospheric pressure. The catalyst preparation method was found to determine the textural characteristics, the oxidation state and distribution of silver and, hence, the catalytic activity in the p-nitrophenol reduction. The impregnation technique was the most favorable for the formation over the ceria surface of highly dispersed silver species that are active in the p-nitrophenol reduction (the first-order rate constant k = 0.656 min−1).

Effect of the Cu/SBA-15 catalyst preparation method on methyl acetate hydrogenation for ethanol production

2014 ◽  
Vol 38 (7) ◽  
pp. 2792 ◽  
Author(s):  
Shurong Wang ◽  
Wenwen Guo ◽  
Haixia Wang ◽  
Lingjun Zhu ◽  
Shi Yin ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Methyl Acetate ◽  
Preparation Method ◽  
Catalyst Preparation
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