文献类型：期刊文献

中文题名：NO与Co(NH_3)_6^(2+)气液反应动力学

英文题名：KINETICS OF GAS-LIQUID REACTION OF NO WITH Co (NH_3)_6^(2+)

作者：龙湘犁[1];肖文德[1];袁渭康[1]

机构：[1]华东理工大学联合化学反应工程研究所,上海200237

年份：2003

卷号：54

期号：9

起止页码：1264

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：2004047827322);Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金"九五"重点资助项目 (No .2 963 3 0 3 0 )~~

语种：中文

中文关键词：动力学;吸收;气液反应;一氧化氮

外文关键词：kinetics, absorption, gas-liquid reaction, nitric oxide

摘要：用Co(NH3 ) 2 + 6的氨水溶液可同时实现NO的氧化和吸收过程 .NO与Co(NH3 ) 2 + 6气液反应动力学研究表明 ,NO与Co(NH3 ) 2 + 6的反应为瞬间反应 ,当Co(NH3 ) 2 + 6浓度低于 2 0mmol·L-1时过程为双膜控制 ,当Co(NH3 ) 2 + 6浓度大于 2 0mmol·L-1时过程逐渐变为气膜控制 .NO的吸收速度随温度的升高而降低 ,气相中氧的存在有利于NO的吸收 ,但当氧的含量高于 5 2 %后再继续增加氧的含量NO吸收速率提高不大 .经研究建立了有氧时NO与Co(NH3 ) 2 +
Oxidation and absorption of nitric oxide can be achieved by using cobalt(Ⅱ) in aqueous ammonia solution. Nitric oxide is oxidized to soluble nitric dioxide in liquid phase. The Co(NH 3) 2+ 6 produced by cobalt(Ⅱ) ions complexing with ammonia acts as the catalyst. The oxidant is the oxygen in flue gas. Oxidation and absorption of nitric oxide proceed simultaneously. A stirred vessel with a plane gas-liquid interface was used to measure the chemical absorption rates of nitric oxide into Co(NH 3) 2+ 6 solutions. The reaction of NO with Co(NH 3) 2+ 6 can be considered as instantaneous. The gas-liquid reaction becomes gas film controlling as Co(NH 3) 2+ 6 concentration exceeds 20?mmol·L -1. Oxygen in the gas phase is favorable to the absorption of nitric oxide, but the effect is less significant at oxygen concentration above 5.2%. The NO absorption rate decreases with increasing temperature. The kinetic equation of NO absorption into Co(NH 3) 2+ 6 solutions in the presence of oxygen is presented.