Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/71316
DC FieldValueLanguage
dc.contributor.authorWang, M.C.en_US
dc.contributor.authorHuang, P.M.en_US
dc.date2000zh_TW
dc.date.accessioned2014-06-11T06:01:11Z-
dc.date.available2014-06-11T06:01:11Z-
dc.identifier.issn0038-075Xzh_TW
dc.identifier.urihttp://hdl.handle.net/11455/71316-
dc.description.abstractThe nature of oxide in soil and associated environments in influencing the abiotic transformations of polyphenols still remains to be established. The objective of this study was to investigate the catalytic power of Mn(IV), Fe(III), Al, and Si oxides in the abiotic ring cleavage of pyrogallol and the polycondensation of the resulting fragments in air and N-2 atmosphere. The catalytic power varied greatly with the nature of the oxides. The synergistic effects of oxygen molecules and oxides also played an important role in affecting the transformations of pyrogallol, The results indicate that the release of CO2 as a result of ring cleavage of pyrogallol enhanced the development of carboxylic group contents of humic polymers formed in the reaction systems. The abiotic ring cleavage of polyphenols catalyzed by soil inorganic components such as short-range ordered oxides of Al and especially Fe and Mn may account, in part, for the carboxylic group contents and the origin of the aliphaticity of humic substances in soils.en_US
dc.language.isoen_USzh_TW
dc.relationSoil Scienceen_US
dc.relation.ispartofseriesSoil Science, Volume 165, Issue 12, Page(s) 934-942.en_US
dc.relation.urihttp://dx.doi.org/10.1097/00010694-200012000-00003en_US
dc.subjectring cleavageen_US
dc.subjectoxidative transformationen_US
dc.subjectpyrogallolen_US
dc.subjectoxidesen_US
dc.subjectsynergisticen_US
dc.subjecteffecten_US
dc.subjectphenolic-compoundsen_US
dc.subjecthumic substancesen_US
dc.subjectclay-mineralsen_US
dc.subjectmanganeseen_US
dc.subjectacidsen_US
dc.subjectsoilsen_US
dc.subjectdissolutionen_US
dc.subjecthydroxidesen_US
dc.subjectbirnessiteen_US
dc.subjectaluminumen_US
dc.titleRing cleavage and oxidative transformation of pyrogallol catalyzed by Mn, Fe, Al, and Si oxidesen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1097/00010694-200012000-00003zh_TW
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en_US-
item.fulltextno fulltext-
item.grantfulltextnone-
item.openairetypeJournal Article-
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