氟里昂替代物HFC-134a和HFC-152a的多光子电离研究  

Studies on the Multiphoton Ionization Dissociation of HFC-152a and HFC-134a and the Evaluation for Their Application Prospects

作　　者：王青[1] 孙凤龙[1] 王文清[1] 王栩[2] 杨达林[2] 朱起鹤[2] 

机构地区：[1]北京大学技术物理系,北京100871 [2]中国科学院化学研究所,北京100080

出　　处：《高等学校化学学报》2002年第8期1504-1506,共3页Chemical Journal of Chinese Universities

摘　　要：The multiphoton ionization dissociation of HFC 152a and HFC 134a under the irradiation of 355 nm and 266 nm was studied in this work. Their photolyzed products were analyzed by time of flight mass spectrum instrument. The photolyzed products of HFC 152a include H +( m/z =1), C +( m/z =12), CH + 3( m/z =15), C + 2( m/z =24), CF 2H +( m/z =51), and CF +( m/z =31), whereas there is no clear products for HFC 134a photolyzation. Further, the application prospects of HFC 152a and HFC 134a in refrigeration sector were also evaluated from the view point of environmental protection, synthesis conditions and usage performance. It is suggested that HFC 152a is a better alternative compared to HFC 134a in refrigeration sector.The multiphoton ionization dissociation of HFC 152a and HFC 134a under the irradiation of 355 nm and 266 nm was studied in this work. Their photolyzed products were analyzed by time of flight mass spectrum instrument. The photolyzed products of HFC 152a include H +( m/z =1), C +( m/z =12), CH + 3( m/z =15), C + 2( m/z =24), CF 2H +( m/z =51), and CF +( m/z =31), whereas there is no clear products for HFC 134a photolyzation. Further, the application prospects of HFC 152a and HFC 134a in refrigeration sector were also evaluated from the view point of environmental protection, synthesis conditions and usage performance. It is suggested that HFC 152a is a better alternative compared to HFC 134a in refrigeration sector.

关 键 词：氟里昂替代物 HFC-134A HFC-152A 多光子电离 飞行时间质谱 制冷剂 

分 类 号：TB64[一般工业技术—制冷工程]