Comparison of Thermal and Chemical Stability of Cu-Humic Complexes

摘要：

　　This work is focused on comparison of the rmo-oxidativeand chemical stability of copper complexes with humicacids.The humic acid was extracted from South-Moravian lignite by standard alkalineextraction.The humic sample was used in two different forms:as solid powder and as hydrogelprepared by acidicprecipitation of humate.Three various concentrations solutions of Cu2+ solutions were used for complex ation of humic powder and gel,in order to study the influence of the irinitial concentration on both determined stabilities of the prepared complexes.Their chemical stability was assessed in term of Cu2+ ions release from the humic acid structure into two different extraction agents (MgCl2 and HCl solutions).Their thermooxidative behaviour was investigated employing thermalanalysis (TGA).

关键词： Humic acid Copper Complexation Chemical stability Thermal stability

作者: Martina Klu(c)áková Kdst(y)na Nová(c)ková

作者单位: Materials Research CentreCZ.1.05/2.1.00/01.0012,Brno University of Technology,Faculty of Chemistry,Purkynova 118,61200,Brno,Czech Republic

会议类型: 国际会议

会议名称: the 16th Meeting of the International Humic Substances Society (第十六届国际腐殖物质学会大会(IHSS 16))

会议地点: 杭州

会议语种:英文

页码: 287-289

在线出版日期: 2012-09-09（万方平台首次上网日期，不代表论文的发表时间）