期刊论文

Reaction Mechanism of H2C2O4 Oxidized by HNO2 via Mn2+ as Catalyst

Xia, Liangshu

中文

原子能科学技术

1000-6931

2023

57

3

469-477

10.7538/yzk.2022.youxian.0351

22176083:国家自然科学基金 2021JJ30566:湖南省自然科学基金项目 203YXC002:湖南省研究生科研创新基金项目

本校为第一机构

为明确硝酸溶液中以Mn2+作催化剂时,亚硝酸氧化破坏H2C2O4的具体化学行为和反应机理,本文考察了在硝酸和硫酸体系中以Mn展开更多 为明确硝酸溶液中以Mn2+作催化剂时,亚硝酸氧化破坏H2C2O4的具体化学行为和反应机理,本文考察了在硝酸和硫酸体系中以Mn2+作催化剂时亚硝酸氧化H2C2O4的差异、Mn2+与草酸络合对亚硝酸氧化Mn(Ⅱ)到Mn(Ⅲ)的作用以及Mn(Ⅲ)破坏H2C2O4过程中产生的自由基,获得了具体的催化反应历程,推测了反应机理。结果表明,亚硝酸在催化反应过程中起主导作用,加入亚硝酸可有效消除反应初期存在的诱导期;反应过程中,溶液中游离的Mn2+与H2C2O4络合生成了MnC2O4,而作为配体的草酸降低了Mn...

H2C2O4is widely used in spent fuel reprocessing.For example,in order to recovery plutonium oxalate precipitated mother liquor before returning,it is necessary to reduce the H2C2O4concentration from 0.1 mo...MORE H2C2O4is widely used in spent fuel reprocessing.For example,in order to recovery plutonium oxalate precipitated mother liquor before returning,it is necessary to reduce the H2C2O4concentration from 0.1 mol/L to about 10-4mol/L.Among the methods of H2C2O4destroyed in waste liquid,the process of H2C2O4oxidized in nitric acid solution with...