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Clay minerals as heterogeneous catalysts in preparation of model humic substances

, : Clay minerals as heterogeneous catalysts in preparation of model humic substances. Zeitschrift fur Pflanzenernahrung und Bodenkunde 140(6): 669-676

In the presence of clay minerals and quartz, protocatechuic acid was oxidized and polymerized into humic substances. Fulvic acids were found mainly in the supernatant and humic acids in the sediment. Decomposition and mineralization of organic intermediates, resulting from ring cleavage, also occurred.


DOI: 10.1002/jpln.19771400608

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