Further Studies of the Catalytic Activity of Coal Minerals in Coal Liquefaction. 1. Verification of Catalytic Activity of Mineral Matter by Model Compound Studies

1979 ◽  
Vol 18 (3) ◽  
pp. 371-376 ◽  
Author(s):  
James A. Guin ◽  
Arthur R. Tarrer ◽  
Jun Moung Lee ◽  
Lawrence Lo ◽  
Christine W. Curtis
Keyword(s):  
Catalytic Activity ◽  
Model Compound ◽  
Coal Liquefaction ◽  
Mineral Matter

Effects of pore structure on initial catalytic activity for residuum desulfurization and coal liquefaction

1989 ◽  
Vol 3 (3) ◽  
pp. 391-397 ◽  
Author(s):  
Young Woo Rhee ◽  
James A. Guin ◽  
Christine W. Curtis
Keyword(s):  
Catalytic Activity ◽  
Pore Structure ◽  
Coal Liquefaction

scholarly journals Model Compound Studies of Coal Liquefaction with Zinc–Butyl Iodide under Mild Conditions

1989 ◽  
Vol 62 (12) ◽  
pp. 3959-3962 ◽  
Author(s):  
Yoshiharu Yoneyama ◽  
Yu Akaki ◽  
Tsutomu Kato
Keyword(s):  
Model Compound ◽  
Coal Liquefaction ◽  
Mild Conditions

scholarly journals Simple Protocol for the Knoevenagel Condensation Under Solvent Free Conditions using Tungstophosphoric Acid as Catalyst

2019 ◽  
Vol 31 (10) ◽  
pp. 2181-2184
Author(s):  
Abdulrahman I. Alharthi
Keyword(s):  
Catalytic Activity ◽  
Reaction Time ◽  
Room Temperature ◽  
Model Compound ◽  
Knoevenagel Condensation ◽  
Maximum Yield ◽  
Tungstophosphoric Acid ◽  
Grinding Method ◽  
Solvent Free Conditions ◽  
Simple Protocol

The effect of calcination on the performance of tungstophosphoric acid for the product of Knoevenagel condensation was investigated. Substituted aldehydes and dimedone has been used in the presence of calcined tungstophosphoric acid as a heterogeneous catalyst using grinding method at room temperature. The results of reactions revealed that calcined tungstophosphoric acid has superior catalytic activity comparing to non-calcined catalyst in terms of yield and reaction time. Maximum yield of model compound was achieved by using 10 mol% of calcined catalyst in a reaction time that does not exceed 10 min, whereas the yield at same amount of non-calcined catalyst was 86 % in a reaction time of 35 min.

scholarly journals Change of Catalytic Activity by Using Various Sulfur Forms in Fe-S System Catalysts in Coal Liquefaction

1983 ◽  
Vol 62 (12) ◽  
pp. 966-973 ◽  
Author(s):  
Shinichi YOKOYAMA ◽  
Hideo NARITA ◽  
Takeshi OKUTANI ◽  
Kohei KODAIRA ◽  
Ryoichi YOSHIDA ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Coal Liquefaction
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