Formation of pore system in PAM and its functions

One of the requirements for metasomatic transformations is that the volume changes between the host and metasomate are minimal. The changes during formation of Pb02 from several lead compounds contained in the cured paste are listed in 

Compound Moles of Pb02 per mole of compound AV (cm ) % AV per Pb atom 

AV is volume change upon conversion to p-Pb02 per gram atom of Pb in compound. 

The changes in porosity of pastes, prepared with 6% H2SO4 at 30°C and containing 3BS during formation at a current density of 2mAcm are presented in Fig. 3.28 [4]. The porograms for the surface layers and for the interior of the plate are plotted and compared with those for an unformed plate. The paste in the interior of 

The data in Table 3.1 show that oxidation of PbO to Pb02 leads to an increase of 

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