草酸与铬配位影响因素  

Study on the Influence Factors on the Coordination Reaction between Oxalic Acid and Chromium Complex

作　　者：田荟琳[1] 付丽红[1] 

机构地区：[1]山东轻工业学院,轻化与环境工程学院,山东济南250353

出　　处：《皮革科学与工程》2010年第3期23-27,共5页Leather Science and Engineering

摘　　要：根据草酸与铬配位过程中UV-Vis特征吸收峰位的变化,探讨了草酸与Cr2O3(A/B)摩尔比、铬配合物分子大小、反应时间和温度对草酸与铬配位反应的影响。结果表明:A与B之间摩尔比、铬配合物分子大小影响草酸与铬的配位反应程度,A与B之间摩尔比增大、铬液pH低有利于配位反应的进行;铬鞣液的pH值是影响草酸根与中心离Cr3+配位反应的主要因素,温度对加快草酸与铬配位反应影响显著。草酸与铬络合物反应的适宜条件:温度30～40℃,铬液pH值2～3,n(A):n(B)为1:1～3:2。The effects of the molar ratio of oxalic acid/chromium oxide,the molecular size of chromium complex,the reaction time and temperature on the coordination reaction between oxalic acid and chromium complex were studied according to the change of the characteristic absorption peak during the reaction.The results showed that the degree of coordination reaction varied with the molar ratio of oxalic acid/chromium oxide and the molecular size of chromium complex.Increasing the molar ratio of oxalic acid/chromium o...

关 键 词：草酸 铬配合物 配位反应 影响因素 

分 类 号：O641.4[理学—物理化学]