Sonochemical Behavior of Aqueous Solutions of Iodide, Bromide and Azide  

作　　者：林逢凯 黄建军 

机构地区：[1]CollegeofResourcesandEnvironmentalEngineering,EastChinaUniversityofScienceandTechnology,Shanghai200237,China

出　　处：《Journal of Shanghai University(English Edition)》2002年第3期255-259,共5页上海大学学报（英文版）

摘　　要：The sonolysis of azide solutions was investigated. The main product isnitrogen, which is formed in the reaction of N_3^- with OH radicals in the millimolar concentrationrange. At higher azide concentration, additional nitrogen is formed as hydrogen atoms are scavenged.Ammonia and hydrazine are minor products of the N_3^- sonolysis. Solutions of iodide and bromideare also irradiated under pH conditions where reactions of the products, i.e., hydrogen per oxideand iodide (or bromide) do not occur. The total yield of the products as well as the hydrogen yieldis independent of the solute concentration. The results are understood in terms of the competitionof the OH + OH and the OH + solute reactions. A local concentration of 4 X 10^(-3) mol/L of the OHradicals in an interfacial region between the cavitation bubbles and the liquid is derived from thedata obtained.The sonolysis of azide solutions was investigated. The main product isnitrogen, which is formed in the reaction of N_3^- with OH radicals in the millimolar concentrationrange. At higher azide concentration, additional nitrogen is formed as hydrogen atoms are scavenged.Ammonia and hydrazine are minor products of the N_3^- sonolysis. Solutions of iodide and bromideare also irradiated under pH conditions where reactions of the products, i.e., hydrogen per oxideand iodide (or bromide) do not occur. The total yield of the products as well as the hydrogen yieldis independent of the solute concentration. The results are understood in terms of the competitionof the OH + OH and the OH + solute reactions. A local concentration of 4 X 10^(-3) mol/L of the OHradicals in an interfacial region between the cavitation bubbles and the liquid is derived from thedata obtained.

关 键 词：SONOLYSIS IODIDE BROMIDE AZIDE ultrasound. 

分 类 号：O657.5[理学—分析化学]