A pulse radiolysis study on the reactions of hydroxyl radical and sulfate radical anion with guanidine derivatives in aqueous solution
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چکیده
منابع مشابه
Hydroxyl Radical-Induced Oxidation of Ethanol in Oxygenated Aqueous Solutions. A Pulse Radiolysis and Product Study
y-Radiolysis of N20-saturated water or photolysis of aqueous H2O2 provided a source of OH radicals. These radicals react with ethanol by preferentially abstracting an H atom at C-l. In the presence of oxygen these radicals are converted into the corresponding peroxyl radicals. The a-hydroxyethylperoxyl radicals decay by first order kinetics (k = ki + k2 [OH -]) acetaldehyde and H02/H+ + 01 bein...
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The reactions of radiolytically generated hydroxyl radicals and H atoms with 1,4and 1,3-cyclohexadiene were studied by pulse radiolysis and product analysis. Hydrogen abstraction from these substrates by the O H radical yields the cyclohexadienyl radical (f (310 nm) = 4400 dm mol" cm" ' from the reaction of the H atom with benzene) with an efficiency of 50% (0.29 ,«moI / " ' ) in the case of 1,...
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Diisopropyl Ether, Hydroxyl Radicals, Peroxyl Radicals, Pulse Radiolysis In the radiolysis of N 2 0/0 2 (4 :1 )-saturated aqueous solutions of diisopropyl ether(10~ mol dm ~), OH radicals abstract H-atoms, thereby producing radicals at C(2) (1 = 78%) and to a lesser extent at C(l) (2 — 22%) which are converted by oxygen into the corresponding peroxyl radicals 3 and 4. Some 0 2 radicals are form...
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A laser photolysis–long path laser absorption (LP-LPLA) experiment has been used to determine the rate constants for H-atom abstraction reactions of the dichloride radical anion (Cl2) in aqueous solution. From direct measurements of the decay of Cl2 in the presence of different reactants at pH 5 4 and I 5 0.1 M the following rate constants at T 5 298 K were derived: methanol, (5.1 6 0.3) · 104 ...
متن کاملRadiolysis of Liquid Propane: non-Radical Reactions
The yields of ionic and excited molecule reactions in y-radiolysis of liquid propane from 35 to -130C have been assessed by isotopic analysis of C3Hs-l-C3Ds+Oz and CH3CD2CH3 -1-02 mixtures. From a comparison with gas phase data the following conclusions are reached for the gas to liquid phase change: (a) the ionic decomposition yield rlecreases by :5 69 %, (b) the net excited molecule decomposi...
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ژورنال
عنوان ژورنال: Chemical Physics Letters
سال: 2008
ISSN: 0009-2614
DOI: 10.1016/j.cplett.2008.07.013