ChemInform Abstract: HYDROGENOLYSIS OF NITROGEN-CONTAINING COMPOUNDS ON A COBALT-MOLYBDENUM CATALYST

1979 ◽  
Vol 10 (17) ◽  
Author(s):  
M. CERNY
Keyword(s):  
Molybdenum Catalyst ◽  
Cobalt Molybdenum Catalyst ◽  
Nitrogen Containing Compounds

Hydrogenolysis of nitrogen-containing compounds on a cobalt-molybdenum catalyst

1979 ◽  
Vol 44 (1) ◽  
pp. 85-98 ◽  
Author(s):  
Mirko Černý
Keyword(s):  
Nitrogen Atom ◽  
Methyl Groups ◽  
Molybdenum Catalyst ◽  
Methyl Group ◽  
Cobalt Molybdenum Catalyst ◽  
Methylene Groups ◽  
Methyl Derivatives ◽  
Nitrogen Containing Compounds

A sulphidized cobalt-molybdenum catalyst on Al2O3 has been used to study hydrogenolysis of pyridine, piperidine, quinoline and their methyl derivatives. In reaction mixtures were identified the compounds which contribute to the knowledge of the mechanism of hydrogenolysis. The cleavage of 2-methylpiperidine ring takes place between the nitrogen atom and the methylene groups and not between the nitrogen atom and the carbon substituted with the methyl group. The amount of hydrogenolysis products decreases in the series pyridine, 2-methylpyridine, 2,6-dimethylpyridine and 2,4,6-trimethylpyridine, i.e. with the increasing number of the methyl groups bonded to the ring.

Kinetics of the catalytic hydrodesulphurization reaction system; hydrogenolysis of thiophene

1980 ◽  
Vol 45 (10) ◽  
pp. 2728-2741 ◽  
Author(s):  
Pavel Fott ◽  
Petr Schneider
Keyword(s):  
Atmospheric Pressure ◽  
Active Sites ◽  
Flow Reactor ◽  
Kinetic Equations ◽  
Reaction System ◽  
Reaction Products ◽  
Molybdenum Catalyst ◽  
Cobalt Molybdenum Catalyst ◽  
Kinetics Of ◽  
Reaction Schemes

Kinetics have been studied of the reaction system taking place during the reaction of thiophene on the cobalt-molybdenum catalyst in a gradientless circulation flow reactor at 360 °C and atmospheric pressure. Butane has been found present in a small amount in the reaction products even at very low conversion. In view of this, consecutive and parallel-consecutive (triangular) reaction schemes have been proposed. In the former scheme the appearance of butane is accounted for by rate of desorption of butene being comparable with the rate of its hydrogenation. According to the latter scheme part of the butane originates from thiophene via a different route than through hydrogenation of butene. Analysis of the kinetic data has revealed that the reaction of thiophene should be considered to take place on other active sites than that of butene. Kinetic equations derived on this assumption for the consecutive and the triangular reaction schemes correlate experimental data with acceptable accuracy.

Activation of a hydrorefining cobalt—molybdenum catalyst

1987 ◽  
Vol 35 (1) ◽  
pp. 23-34 ◽  
Author(s):  
V. Stuchlý ◽  
H. Zahradníková ◽  
L. Beránek
Keyword(s):  
Molybdenum Catalyst ◽  
Cobalt Molybdenum Catalyst
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