摘要
以(NH4)6Mo7O24·4H2O,MnSO4·H2O和(NH4)2S2O8为原料合成(NH4)6[MnMo9O32]·8H2O(八水合九钼锰酸铵),用紫外可见电子光谱分析法对该化合物进行表征;以490 nm为测定波长,测定浓度为8×10-4mol/L的(NH4)6[MnMo9O32]溶液与浓度分别为4×10-3、6×10-3、8×10-3、12×10-3mol·L-1的酒石酸溶液进行氧化还原反应时的吸光度。以不同浓度的ln(A-A∞)对T作图呈线型关系,确定氧化剂反应级数为一级反应。以不同浓度的Kobs对还原剂浓度作图,其图形也呈直线,确定还原剂反应级数也为一。
（NH4）6[MnMo9032]8H20 was synthesized by （NH4）6MoTO24-4H2O, MnSO4-H20 and （NH4）2S208 which were used as raw materials. The ultimate analysis and the structure were characterized by UV and visible light. Intensity of light-absorbing was measured with wavelength of 490 nm by visible and ultra-violet absorption spectrometry. The concentration of tartaric acid solution is 4.0x l03, 6.0~ 10＂3, 8.0x 103, 12x 10-3 mol.L1 respectively. Different ln（A-A） is linear with time which means the oxidation reaction first order reaction. The Kobs is linear with concentration ofreductive agent. The reduction reaction is first too.
出处
《唐山师范学院学报》
2012年第5期5-7,共3页
Journal of Tangshan Normal University
基金
唐山师范学院科学研究基金资助项目(07c19)
关键词
杂多酸
反应级数
光度法
速率常数
heteropolyaeid
orders of reaction
absorbency
rates constant
