Kinetics of the decomposition of ammonia on platinum at low pressures

1967 ◽  
Vol 63 ◽  
pp. 476 ◽  
Author(s):  
A. J. B. Robertson ◽  
E. M. A. Willhoft
Keyword(s):  
Low Pressures ◽  
Kinetics Of

scholarly journals The thermal decomposition of acetaldehyde and the existence of different activated states

1933 ◽  
Vol 141 (843) ◽  
pp. 41-55 ◽  
Keyword(s):  
High Pressures ◽  
Initial Pressure ◽  
Bimolecular Reaction ◽  
Bimolecular Reactions ◽  
First Order ◽  
Straight Line ◽  
Gas Reactions ◽  
Pass Through ◽  
Low Pressures ◽  
Kinetics Of

Homogeneous thermal gas reactions were at one time tacitly assumed to possess a definite order, unimolecular and bimolecular reactions, for example, being sharply distinguished. The kinetics of the decomposition of acetalde­ hyde, CH 3 CHO = CH 4 + CO, over the pressure range of 100 to 400 mm. were found to satisfy the criterion of a bimolecular reaction, namely, that the reciprocal of the time for half change (1/ t 1/2 ) )plotted against the initial pressure ( p 0 ) gave a straight line inclined to the axes. The line, however, did not pass through the origin, as may be seen in fig. 1 of the present paper. This indicated the presence of some first order reaction, the nature of which was not determined. Subsequently, in accordance with the collision theory of activation and deactivation, it was shown that certain reactions, sometimes called quasiummolecular, change their order from the second at low pressures to the first at high pressures. This apparently was the reverse of the behaviour shown by acetaldehyde.

Conformational kinetics of methyl nitrite. IV. Bimolecular kinetics at low pressures

1986 ◽  
Vol 84 (11) ◽  
pp. 6218-6226 ◽  
Author(s):  
J. Paul Chauvel ◽  
B. Ri. Friedman ◽  
Nancy S. True
Keyword(s):  
Methyl Nitrite ◽  
Low Pressures ◽  
Kinetics Of
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