Abstract
The influence of the nature and properties of oxides in soil and sediment environments on the characteristics of polyphenol-derived humic polymers formed by abiotic catalysis is not fully understood. The objective of this study was to investigate the catalytic power of Mn(IV), Fe(III), Al, and Si oxides in the transformation of pyrogallol and the development of carboxylic and aliphatic groups in the resulting humic polymers. The metal oxides differed significantly in their effectiveness for catalyzing pyrogallol humification. The results indicate that the carboxylic group of humic polymers developed as a result of ring cleavage of pyrogallol catalyzed by the oxides. The ability of short-range ordered oxides of Al, Si, and especially Fe and Mn, in enhancing the formation of aliphatic and carboxylic groups in humic polymers derived from polyphenol humification may, in part, contribute to the origin of aliphaticity of humic substances and the variation of their characteristics, including carboxylic group contents with soils from different climatic zones.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
