Zobrazeno 1 - 10
of 157
pro vyhledávání: '"Edwin J. Hart"'
Publikováno v:
The Journal of Physical Chemistry A. 102:2667-2672
Thermal or hydrogen peroxide initiated decomposition of acidic aqueous ozone is described as a chain process propagated by OH and O2-/HO2 radicals. In the absence of H2O2 added, the chain is initiated by surface-catalyzed formation of H2O2. Surface-d
Publikováno v:
The Journal of Physical Chemistry. 96:1005-1009
Publikováno v:
Environmental Science & Technology. 25:1589-1596
The primary step in the thermal decomposition of acidic aqueous ozone solutions is the dissociation reaction: O 3 ⇄O+O 2 . This reaction is supported by the retarding effect of O 2 on the decomposition rate, by our activation energy measurements, E
Publikováno v:
International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry. 36:511-516
Water was irradiated with 300 kHz ultrasound under an argon atmosphere containing various amounts of methane and ethane. Limited studies were also made on ethylene, acetylene, propane and butane. The methane and ethane irradiations were carried out o
Publikováno v:
The Journal of Physical Chemistry. 94:284-290
Water was irradiated with 1 MHz ultrasound (about 2 W/cm{sup 2}) under mixtures of argon and acetylene of various compositions. A few experiments were performed using deuterated acetylene. Acetylene is rapidly consumed, the maximum rate occurring at
Publikováno v:
International Journal of Radiation Applications and Instrumentation. Part C. Radiation Physics and Chemistry. 29:399-403
The free-radical initiated chain decomposition of aqueous O 3 -O 2 solutions has been studied as a function of dose rate and O 3 concentration in the pH range, 2.0–7.0. At dose rates of 10 rad s − or less, extensive chain decomposition of O 3 occ
Publikováno v:
The Journal of Physical Chemistry. 88:4144-4147
In slightly alkaline solution the ozonide radical ion, O/sub 3//sup -/, forms as a product of the hydroxyl radical reaction with ozone. For each O/sub 3//sup -/ formed, two O/sub 3/ molecules are consumed. In acid solution the product of this reactio
Publikováno v:
The Journal of Physical Chemistry. 81:1363-1367
Formation of radical cations from the OH adducts of methylated benzenes in acidic aqueous solutions is demonstrated. The radical cation is formed as an intermediate species in the water elimination reaction in which the OH adduct is transformed into
Autor:
Weldon G. Brown, Edwin J. Hart
Publikováno v:
Radiation Physics and Chemistry (1977). 15:163-167
O(3P) atom formation in irradiated aqueous solutions was studied in the BrO3- concentration range from 0.01 to 2.0 mol dm-3 by measuring the ethylene resulting from the O(3P) atom reaction with cyclopentene (CP). Reaction of O(3P) with BrO3− attain
Autor:
Edwin J. Hart, Arnim Henglein
Publikováno v:
The Journal of Physical Chemistry. 89:4342-4347
On etudie l'influence de l'oxygene sur la formation de peroxyde d'hydrogene en irradiant des solutions de iodure de potassium et de formiate de sodium sous divers melanges d'argon et d'oxygene