纳米银催化氧化偶联硫醇制二硫化物  

PVP-Capped Silver Nanoparticles as Catalyst for Oxidative Coupling of Thiols to Disulfides

作　　者：闫江梅[1] 陶辉旺[1] 曾牡玲[1] 陶军[1] 张世鸿[1] 闫智英[1] 王伟[1] 王家强[1] 

机构地区：[1]云南大学应用化学系,教育部自然资源药物化学重点实验室,云南昆明650091

出　　处：《催化学报》2009年第9期856-858,共3页

基　　金：国家自然科学基金(20863009);国家重点基础研究发展计划(973计划)前期研究专项(2008CB617514);云南省自然科学基金(2007B018M;2008CD065);高等学校博士学科点专项科研基金(200806730005)

摘　　要：采用多元醇为溶剂和还原剂制备了聚乙烯吡咯烷酮(PVP)保护的纳米银,并将其用于催化正十二烷基硫醇氧化偶联反应.质谱、红外光谱、拉曼光谱和核磁共振氢谱表征结果表明所得产物为二硫化物.考察了反应时间、反应温度、催化剂和水的用量等对正十二烷基硫醇氧化偶联反应的影响,从而得出优化的反应条件:0.157mmolPVP保护的纳米银,20μl水,100oC下反应3h.此外,进一步将PVP保护的纳米银用于正丁硫醇和正辛硫醇的氧化偶联反应,也得到了相应的二硫化物.Polyvinylpyrrolidone （PVP）-capped silver nanoparticles were used as the catalyst for the oxidative coupling of n-dodecanethiol. The product was characterized to be n-dodecyl disulfide by mass spectrometry, Fourier transform infrared spectroscopy, Raman spectroscopy, and proton nuclear magnetic resonance spectroscopy. The effects of reaction time, temperature, catalyst concentration, and water amount on catalyst performance were examined. The optimum reaction conditions were 0. 157 mmol PVP-capped silver nanoparticles, 20 μl distilled water, reaction temperature of 100 ℃, and reaction time of 3 h. The PVP-capped silver nanoparticles were also used as the catalyst for the oxidative coupling of n-butanethiol and n-octanethiol to their corresponding disulfides.

关 键 词：聚乙烯吡咯烷酮 纳米银 氧化偶联 硫醇 二硫化物 

分 类 号：O643.32[理学—物理化学]