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An evaporation study of C 76 by Knudsen cell mass spectrometry
Author(s) -
Boltalina Olga V.,
Markov Vitaliy Yu.,
Borschevskii Andrey Ya.,
Sidorov Lev N.,
Bezmelnitsin Valery N.,
Eletskii Alexander V.,
Taylor Roger
Publication year - 1998
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(19980815)12:15<1028::aid-rcm271>3.0.co;2-v
Subject(s) - chemistry , sublimation (psychology) , enthalpy of sublimation , enthalpy , vapor pressure , knudsen number , mass spectrometry , atmospheric temperature range , thermodynamics , fullerene , analytical chemistry (journal) , organic chemistry , chromatography , psychotherapist , psychology , physics
The vapour pressure of pure C 76 and its sublimation enthalpy have been determined by Knudsen cell mass spectrometry in the temperature range 637–911 K. The temperature–pressure equation is ln p (Pa) =(−22 806 ± 820)/ T (K) + (24.52 ± 1.08). The mean sublimation enthalpy at 764 K is (190 ± 7) kJ/mol. This value is lower than that, (222 ± 17) kJ/mol, determined by us previously from a mixture of higher fullerenes, 1 confirming further that the mixture of higher fullerenes is not an ideal solid solution. © 1998 John Wiley & Sons, Ltd.