The mechanism of the "unimolecular" yield of hydrogen in the radiolysis of liquid cyclohexane

Journal Article · Sat Mar 31 23:00:00 EST 1962 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/j100810a508· OSTI ID:4791000

Dyne, P. J.

The unimolecular hydrogen yield mechanism in the radiolysis of liquid cyclohexane was detected by measuring the yield of D/ produced in the radiolysis of c-C ₆H₁₂c-C₆D₁₂ mixtures, which are first order with respect to the C₆D₁₂concentration. It is argued that the interaction must be by a quenching or energy-transfer type type process. The data, interpreted in terms of a diffusion-controlled reaction, show that the collision efficiency for the radical scavenger reaction for both benzene and iodine would have to be close to unity. It is concluded that justification is given for assuming that benzene and iodine reduce the unimolecular yield by a quenching or energytransfer mechanism, rejecting a scavenging interaction, and part, if not all, of the unimolecular yield probably occurs by a true molecular splitting.

• Research Organization: Atomic Energy of Canada Ltd., Chalk River, Ont.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-016426
• OSTI ID: 4791000
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 4 Vol. 66; ISSN 0022-3654
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
BENZENE
COLLISIONS
CYCLOALKANES
DECOMPOSITION
DEUTERIUM COMPOUNDS
DIFFUSION
FREE RADICALS
HEAT TREATMENTS
HEXANE
HYDROGEN
IODINE
LABELLED COMPOUNDS
LIQUIDS
MEASURED VALUES
MIXING
MOLECULES
QUENCHING
RADIATION CHEMISTRY
RADIOLYSIS
REACTION KINETICS