Potassium ferrioxalate reaction

For a laboratory reactor like the one used in this work, these values can be obtained resorting to conventional acfinometry employing the well-known potassium ferrioxalate reaction. The details of the method can be found in Zalazar et al. (2005). The obtained results for the boundary conditions are indicated in Table 6. 

Experimental details 55 The quantum yields of the reactions shown in Scheme 6.98 were obtained by simultaneous irradiation of the corresponding 4-nitroanisole amine solutions in methanol water (20 80, v/v) and actinometer (Section 3.9.2) solutions (aqueous potassium ferrioxalate) in UV cells, placed in a merry-go-round apparatus (Figure 3.30). The samples were irradiated by passing the light from a... 

In equation 6.58, a is the absorption coefficient of 2,4-D exclusively. The boundary condition for equation 6.58 is that the incident radiation at x = 0. It can be precisely evaluated with actinometer measurements. Potassium ferrioxalate was used according to the operating conditions reported by Murov etal. (1993). According to equation 6.8 a mass balance for the well-stirred, isothermal, batch reactor applied to the actinometer reaction gives for the reaction product (Fe )... 

In a typical application using the potassium ferrioxalate actinometer, aqueous solutions of K3[Fe(C204)3] are photolysed with monochromatic light, leading to reduction to iron(ll) through the overall reaction ... 

An alternative approach is to use chemical actinometry. A chemical actinome-ter makes use of a photochemical reaction that has an accurately known and easily reproducible quantum yield. One such chemical actinometer uses a solution of potassium ferrioxalate in 0.1 M sulfuric acid. Irradiation of this oxygen-ffee... 

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