摘要
利用激光烧蚀 -分子束法对Al等离子体与乙醇团簇的反应进行了研究 .飞行时间质谱测得的主要反应产物有Al+ (C2 H5OH) n(n =3～ 10 )与H+ (C2 H5OH) n (n =1～ 14 )团簇正离子和 (C2 H5OH) n(H2 O)OH-(n =0～ 8)团簇负离子 .实验发现 ,烧蚀产生的Al等离子体与脉冲分子束的不同位置反应 ,对团簇离子的类别、大小及强度分布均产生很大影响 .Al等离子体与脉冲分子束的前段反应 ,主要产生金属 -复合物团簇离子Al+ (C2 H5OH) n,且信号较强 ;Al等离子体与脉冲分子束的中段及后段反应 ,主要产生质子化团簇离子H+ (C2 H5OH) n 和团簇负离子 (C2 H5OH) n(H2 O)OH-,同时还出现强度较小的其他水合团簇离子 ,如H+ (H2 O) m(C2 H5OH) n (m =1～ 2 )
The gas phase reaction of aluminum plasma and ethanol clusters has been studied by laser ablation-molecular beam (LAMB) method with a linear time-of-flight mass spectrometer. A small reaction cell was introduced to the ion-cluster reaction pathway, which can increase the reaction effectively. The metal complex cluster ions Al +(C_2H_5OH)_n (n=3～10) were produced when the Al plasma reacted with the front part of the molecular beam; the protonated ethanol cluster ions H +(C_2H_5OH)_n (n=1～14) and hydrated cluster ions (C_2H_5OH)_n(H_2O)OH - (n=0～8) formed mainly when the Al plasma reacted with the middle and back parts of the molecular beam.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2004年第5期480-484,共5页
Acta Chimica Sinica
基金
国家自然科学基金 (No.2 0 0 730 4 2 )
国家 863计划 (No.2 0 0 2AA6490 1 0 )资助项目
