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Author(s):   Mullen, C.; Smith, M.A.
Title:   Low temperature NH(X 3Σ- ) radical reactions with NO, saturated, and unsaturated hydrocarbons studied in a pulsed supersonic laval nozzle flow reactor between 53 and 188 K
Journal:   J. Phys. Chem. A
Volume:   109
Page(s):   1391 - 1399
Year:   2005
Reference type:   Journal article
Squib:   2005MUL/SMI1391-1399

Reaction:   C2H2 + NH → Products
Reaction order:   2
Temperature:   53.00 - 135 K
Pressure:  3.20E11 - 1.41E12 bar
Rate expression:   4.53x10-12 [±3.02x10-13 cm3/molecule s] (T/298 K)(-1.07±0.04)
Category:  Experiment
Data type:   Absolute value measured directly
Pressure dependence:   None reported
Experimental procedure:   Laval nozzle
Excitation technique:   Discharge
Time resolution:   In real time
Analytical technique:   Laser induced fluorescence
Comments:   NH was produced in a pulsed discharge and the kinetics studied by co-expanding known quantities of reagent and buffer gases through a supersonic pulsed Laval nozzle. Decay of the NH was followed via LIF.

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Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
53.00 2.88E-11
75.00 1.98E-11
100 1.46E-11
125 1.15E-11
135 1.06E-11