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Author(s):   Chen, Y.-J.; Chu, L.K.; Lin, S.-R.; Lee, Y.P.
Title:   Obsrvation of CH4 (v2=1 or v4=1) in the Reaction Cl + CH4 with Time-Resolved Fourier-Transform Infrared Absorption Spectroscopy
Journal:   J. Chem. Phys.
Volume:   115
Page(s):   6513 - 6521
Year:   2001
Reference type:   Journal article
Squib:   2001CHE/CHU6513-6521

Reaction:   CH4(v*) + Ar → CH4(v*) + Ar
Reaction order:   2
Temperature:   298 K
Pressure:  9.33E-3 bar
Rate expression:   2.2x10-15 [±3.0x10-16 cm3/molecule s]
Category:  Experiment
Data type:   Absolute value measured directly
Pressure dependence:   None reported
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Flash photolysis (laser or conventional)
Time resolution:   In real time
Analytical technique:   Fourier transform (FTIR)
Comments:   Vibrationally excited methane (CH4(v*)) was observed among products of the Cl + Ch4 reaction. The most likely source of CH4(v*) is the secondary reaction of energy transfer from CH3Cl(v*). The rate of quenching of CH4(v*) was determined. The uncertainty given in the abstract (0.1x10-15 cm3 molecule-1 s-1) is different from the one given in the text (0.3x10-15 cm3 molecule-1 s-1). The experimental pressure given is approximate.

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