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Temperature Jump Measurements in Gas Kinetics
Author(s) -
Gozel P.,
Calpini B.,
van Den Bergh H.
Publication year - 1984
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.198400036
Subject(s) - chemistry , temperature jump , bar (unit) , gas phase , absorption (acoustics) , relaxation (psychology) , jump , kinetic energy , analytical chemistry (journal) , kinetics , thermodynamics , optics , chromatography , meteorology , psychology , social psychology , physics , quantum mechanics
The temperature jump relaxation method is applied to kinetic measurements in the gas phase. The system N 2 O 4 ⇄2NO 2 is studied. Fast T‐jumps are induced by IR absorption from a TEA CO 2 laser. Temperature jumps of less than 1 K lead to readily detectable concentration changes which are monitored by UV absorption in a simple single shot experiment. k rec (Ar) is found to be 1.05 × 10 10 cm 3 mol −1 s −1 at P Ar = 1 bar and T = 258 K, in agreement with recent experimental data.