Engleman, Rolf (1959) On the recombination rate of iodine atoms in the presence of various gases. Dissertation (Ph.D.), California Institute of Technology. http://resolver.caltech.edu/CaltechETD:etd-02062006-102644
The rate of iodine atom recombination in the presence of various gases has been studied by the flash photolysis technique. The temperature dependence of the rate constant has been determined for recombination in helium, hydrogen, benzene, and methyl iodide. The negative temperature dependences are fitted by the form, k∝1/Tn, where n(He) = 0.80, n(H2 = 1.48, n(C6H6 = 2.53, and n(CH3I = 3.24.
The iodine atom recombination rate constant was also measured at 50°C. for ethyl iodide, hydrogen iodide, carbon monoxide, and nitric oxide. The rate constants relative to helium at 50°C. are:
He 1.00 C2H5I 179.
H2 3.33 NI 21.1
C6H6 61.1 CO 4.07
CH3I 88.8 NO >1.4 x 104
Nitric oxide appears to be a very efficient third body gas and only a lower limit on the rate constant could be established.
Calculations have been made for some possible mechanisms of iodine atom recombination. A classical three body collision model is proposed for atom recombinations. The classical equations of motion were programmed to be solved numerically on a digital computer and some trajectories were examined.
|Item Type:||Thesis (Dissertation (Ph.D.))|
|Degree Grantor:||California Institute of Technology|
|Division:||Chemistry and Chemical Engineering|
|Thesis Availability:||Public (worldwide access)|
|Defense Date:||1 January 1959|
|Author Email:||engleman (AT) unm.edu|
|Errata:||Page 25. Equation (18): Exponent given as ( 4.09±.03) should be (8.68±.01). Page 25. Line 13 from top: 500K. should be 500C. Page 79. Reference 7: Author omitted after Norrish; insert A. J. Harrison.|
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|Deposited By:||Imported from ETD-db|
|Deposited On:||06 Feb 2006|
|Last Modified:||14 Feb 2014 18:25|
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