Haber-Weiss scheme

According to the Haber-Weiss scheme [11], in the framework of which we considered the catalytic decomposition of ROOH, all ROOH molecules decompose under the action of ions... 

Gorin (97) (equations 67,68). Replacement of hydroxyl radical by ferryl ion throughout the Haber-Weiss scheme does not alter its predicted kinetics (30,536). Similar ambiguity in the structural interpretation of the Fe++-H202 reaction develops when the ratio of ferric ion to ferrous ion and/or hydrogen peroxide is high (22,23). The observed rates of reaction may then be explained by equations (69) to (71). Measurement of isotope fractionation exerted by Fe... 

According to the Haber—Weiss scheme, in the framework of which we considered the catalytic decomposition of ROOH, all ROOH molecules decompose under the action of ions only to free radicals, i.e., one-electron redox decomposition occurs. Both rates of catalytic decomposition of ROOH (from the consumption of ROOH) and the rate of generation of free radicals (from the consumption of the acceptor of free radicals or initiation rate of the chain process of RH oxidation or CH2=CHX polymerization) were measured for a series of systems (ROOH-catalyst-solvent). The comparison of these two processes showed that there are many systems, indeed, where the rate of ROOH decomposition and radical generation virtually coincide (v, = Vj). This is observed, for example, in the systems... 

Important for verification of the Haber — Weiss scheme was proof of the existence of the OH radical and then the HO2 radical in solutions by physical methods. Certain thermod3mamic quantities and normal electrode potentials relatii to systems Involving OH, HO2, and H2O2 were also determined by calculation [8-12]. 

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