NIST Chemical Kinetics Database

Author(s):   Lafont, J.; Ensuncho, A.; Dominguez, R. M.; Rotinov, A.; Herize, A.; Quijano, J.; Chuchani, G.
Title:   Mechanism of elimination of amino acid derivatives in the gas phase. Pyrolysis kinetics of ethyl picolinate, ethyl 1-methylpipecolinate and picolinic acid
Journal:   J. Phys. Org. Chem.
Volume:   16
Page(s):   84 - 88
Year:   2003
Reference type:   Journal article
Squib:   2003LAF/ENS84-88

Reaction:   2-Pyridinecarboxylic acid → Pyridine + CO₂
Reaction order:   1
Temperature:   454 - 493 K
Rate expression:   1.12x10¹² [±2.53x10¹¹ s^-1] e^{-135700 [±900 J/mole]/RT}
Category: Experiment
Data type:   Absolute value measured directly
Pressure dependence:   None reported
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Thermal
Time resolution:   In real time
Analytical technique:   Pressure measurement
Comments:
Kinetics were determined by following pressure vs. time with products identified via GC/MS analysis.

Uncertainties are precision only and are at the 90% confidence level.

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Rate constant values calculated from the Arrhenius expression:

T (K)	k(T) [s^-1]
454	2.72E-4
475	1.34E-3
493	4.84E-3