Activated and activationless localization and impurity trapping of the dry electron in methanol and propanol. Rate constants for solvated electrons

Autor:	Dusan Razem, William H. Hamill
Rok vydání:	1978
Předmět:	Propanol Range (particle radiation) chemistry.chemical_compound Reaction rate constant Chemistry Impurity Enthalpy General Engineering Physical chemistry Electron Physical and Theoretical Chemistry Solvated electron Kinetic energy
Zdroj:	The Journal of Physical Chemistry. 82:1460-1465
ISSN:	1541-5740 0022-3654
DOI:	10.1021/j100502a002
Popis:	Dry-electron trapping by impurity competes with localization by the medium. Observations in the range 80 to 300 K for methanol and 1-propanol provide evidence that each of these processes has activated and activationless components, most clearly shown for methanol. The activationless processes dominate below approximately 150 K. They are considered to resemble electron resonances in the gas phase, the energy being supplied by the electron, as for benzene. The disordered medium converts potential energy of electronic polarization to kinetic energy by scattering. The rate constants for scavenging solvated electrons do not correlate with dry-electron scavenging efficiencies over the range approximately 5 x 10/sup 6/ to 5 x 10/sup 8/ M/sup 1/ s/sup -1/, and only correlate poorly with the enthalpy of activation. For each scavenger the rate constants change systematically from solvent to solvent. 2 tables, 6 figures.
Databáze:	OpenAIRE
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