CATALYTIC POLYMERIZATION OF PHENOLIC COMPOUNDS BY A LATOSOL

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Abstract
Phenolic compounds [12] and glycine were mixed in 2 different formulations, designated as A and B, and dissolved in adequate amounts of very dilute NH4OH. Formulation A contained fewer trihydroxyphenolic compounds and more dihydroxyphenolic compounds than formulation B. They were added separately to 2 portions of a neutralized latosol low in organic matter content at 5 separate times. The polymerization of the compounds was catalyzed by the soil and traced by paper chromatography. The 2 portions of the soil were extracted with benzene-95% alcohol: 1-1, 0.1 N HCl, 0.1 M Na4P2O7 at pH 7.0 and 0.5 N NaOH in sequence. The model humins were also extracted after treating the soils with HCl-HF solution. The model HA [humic acid] and FA [fulvic acid] extracted resemble the natural ones in color, solubility in acid and alkali, infrared spectra, etc. In the benzene-95% alcohol extract of the soil treated with formulation A, aromatic polymer was the main component, while in that treated with formulation B, aliphatic polymer predominated. The percentage of conversion of the total compounds added to the soil in the 2 formulations into polymers was a little over 63%. The N found in model HA was 1.51-3.03% and in the model FA 0.59-1.23%.

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