ARGON-ETHYLENE LAYER FORMATION ON GRAPHITIZED CARBON BLACK

被引:16
作者
PRENZLOW, CF
BEARD, HR
BRUNDAGE, RS
机构
[1] National Bureau of Standards, Gaithersberg, MD
[2] California State College at Fullerton, Fullerton, CA
[3] California State College at Fullerton, Chemistry Department, Fullerton, CA
关键词
D O I
10.1021/j100724a036
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Argon isotherms have been measured on various coverages of ethylene on graphitized carbon black in the range 64-78°K. The molecular area of ethylene at 77°K was estimated to be 17.8-18.8 Å2. This value corresponds best with a model of ethylene molecules rocking to and fro on the carbon surface. The prefrozen layer methods of Halsey have been extended to a system in which capillarity is a complication. The maximum thickness of the ethylene film was found to be 2 layers. Argon Vm lowering on ethylene was observed and attributed to loose packing of argon rather than to ethylene capillarity or surface roughness of carbon. A two-dimensional phase transition, presumably of the liquid → solid type, has been observed for the first time on a prefrozen layer system.
引用
收藏
页码:969 / &
相关论文
共 27 条
[1]  
BEZUS AG, 1964, RUSS J PHYS CHEM, V38, P59
[2]  
BEZUS AG, 1961, RUSS COLLOID J, V23, P328
[3]  
CLARK, 1951, PHYSICAS GRAV, V17, P880
[4]   THE ADSORPTION OF ARGON ON GRAPHITE [J].
CROWELL, AD ;
YOUNG, DM .
TRANSACTIONS OF THE FARADAY SOCIETY, 1953, 49 (09) :1080-1085
[5]   The polarisabilities of bonds - I. [J].
Denbigh, KG .
TRANSACTIONS OF THE FARADAY SOCIETY, 1940, 36 :0936-0947
[6]  
EATWELL AJ, 1960, PHIL MAG, V5, P463
[7]   Ethylene. The heat capacity from 15(0)K. to the boiling point. The heats of fusion and vaporization. The vapor pressure of the liquid. The entropy from thermal measurements compared with the entropy from spectroscopic data [J].
Egan, CJ ;
Kemp, JD .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1937, 59 :1264-1268
[8]  
GIAUQUE WF, 1933, J AM CHEM SOC, V55, P4879
[10]   NEW METHOD FOR THE CALCULATION OF MOLECULAR MAGNETIC SUSCEPTIBILITIES [J].
GUY, J ;
TILLIEU, J .
JOURNAL OF CHEMICAL PHYSICS, 1956, 24 (05) :1117-1117