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高纯三氟甲烷的制备工艺 被引量:2
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作者 袁淑筠 廖恒易 《低温与特气》 CAS 2014年第6期19-22,共4页
综述了高纯三氟甲烷的制备工艺,提出了通过精馏加吸附的纯化方法,将含有二氧化碳、三氟一氯甲烷、三氟一溴甲烷、五氟乙烷、二氟一氯甲烷、二氟二氯甲烷等杂质的粗三氟甲烷,提纯到99.999%以上。
关键词 高纯甲烷 精馏 二氧化碳 三氟一氯甲烷 一氯甲烷
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Ion-Pair Photodissociation of Trichloromonofluoromethane
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作者 陈刘利 田善喜 +4 位作者 徐云峰 储根柏 刘付轶 单晓斌 盛六四 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2011年第3期261-266,I0003,共7页
fragments, F- and Cl- including two isotope species 35Cl- and 37Cl-, are observed in the photoexcitations of CFC13. The ion-pair anion efficiency spectra of 35Cl- and 37Cl- are recorded in the photon energy range of 7... fragments, F- and Cl- including two isotope species 35Cl- and 37Cl-, are observed in the photoexcitations of CFC13. The ion-pair anion efficiency spectra of 35Cl- and 37Cl- are recorded in the photon energy range of 7.75-22.00 eV. The threshold of ion-pair dissociation CFCl3-CFC12++Cl- is experimentally determined to be 7.944-0.04 eV. With the references of the high-resolution photoabsorption spectra reported in the literatures, we make tentative assignments of the electron valence-to-Rydberg transitions. Furthermore, the multibody ion-pair fragmentation processes to Cl- are discussed by comparison between the calculated thermochemical thresholds and the experimental efficiency spectrum. 展开更多
关键词 Trichloromonofluoromethane Ion-pair dissociation Rydberg state Ion-pair anion efficiency spectrum Time-of-flight mass spectrometer
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