仲钨酸A与仲钨酸B的化学活性及其转变速度的研究

高等学校化学学报 ›› 1987, Vol. 8 ›› Issue (8): 681.

仲钨酸A与仲钨酸B的化学活性及其转变速度的研究

蒋安仁, 厐震, 顾翼东

复旦大学化学系

收稿日期:1986-02-28 出版日期:1987-08-24 发布日期:1987-08-24

The Chemical Activities of Paratungstate A and B and the Study for Their Rate of Transformation

Jiang Anren, Pang Zhen, Gu Yidong

Department of Chemistry, Fudan University, Shanghai

Received:1986-02-28 Online:1987-08-24 Published:1987-08-24

摘要/Abstract

摘要： 根据ParaA和ParaB对H₂O₂反应活性的差异,提出己酸化的钨酸钠溶液经加热陈化后溶液中ParaB的测定方法(即H₂O₂-SO₂法)。求出不同Z(H⁺/W)值溶液在80℃时ParaB的形成速度,发现形成速度呈线性变化,且随Z值的增加而变慢。从ParaA和ParaB的结构解释了它们对H₂O₂活性上的差异。

Abstract: Taking advantage of their difference, the quantity of the non-active component, para B, in the acidified timgstate solution aged by heating can be determined. Making use of the method of H₂O₂-SO₂, the rate of formation of para Bare determined at 80℃ with Zvalues (H⁺/W) equal to 0.667,0.850,1.00 and 1.14 respectively. It is found that expect the solution with Z=1.14 in which the disproportionation reaction may occured, in all the solutions with other Zvalues the formations of,para Eare very slow. The characters of the changing of the rates of para Bformation are linear, and the formation rate decreases as the Zvalue increases. The activity difference with H₂O₂between para A and B is explained according to their structure.

TrendMD:

蒋安仁, 厐震, 顾翼东. 仲钨酸A与仲钨酸B的化学活性及其转变速度的研究. 高等学校化学学报, 1987, 8(8): 681.

Jiang Anren, Pang Zhen, Gu Yidong . The Chemical Activities of Paratungstate A and B and the Study for Their Rate of Transformation. Chem. J. Chinese Universities, 1987, 8(8): 681.