On Physical Adsorption. V. Two-Dimensional Condensation of Ethane on Surfaces of Solids at 90°K.¹

Abstract

Acknowledgment.-The authors wish to acknowledge the contribution of Robert C. Reid, who designed the capillary apparatus used here. Preliminary investigations of this problem were made

Surface Chemistry of Froth Flotation

“…An example of a stepwise adsorption isotherm caused by the presence of several types of homogeneous surfaces possessing different adsorption characteristicsethane adsorbing on CaF. at 90 o K [Ross and Winkler (1954),. with permission from J. Am.Chern.…”

Investigation on the surface structure of precipitated silver iodide samples by krypton adsorption

“…Ross and Boyd 249 2 5 prepared a sample which showed two steps which were later ascribed to the (100) and (I 11) faces on the basis of the latter work of Ross and Winkler. 26 The algorithm HILDA used with the HdB equation offers a useful way to show the relative amounts of homotattic regions, but also the distribution of the remaining heterogeneous regions. A typical result is shown in fig.…”

Correlation Field, Two‐Dimensional First Order Phase Transition and Heats of Adsorption in CO2on the NaCl(100) Cleavage Plane

“…At least the results for C2H6 on NaCl(fi1m) [lS] are surprising because in Refs. [7,8] 2D transitions of C2H6 on NaCl powder have been reported. This is a striking example for the influence of surface heterogeneities on the sharpness of 2D transitions, i.e.…”

“…In particular, volumetric techniques have been applied to powdered samples: Ar, 02, N2 and C 0 2 on NaCl [6], C2Hs on NaCl and KCl [7], Xe, CH4 and C2H6 on NaCl [S], Kr on NaCl, KCl and RbCl [9], water and alcoholes [lo] as well as Ar, CHI, 02, and N2 on NaF [2]. IR measurements have been reported for CO CH3F [17] and C2H6 [lS] on NaCl films and for water and alcoholes on compressed NaF-powder [lo].…”

“…Physisorption on alkali halide-films, -powders, and -single crystal cleavage planes has been studied by using e. g. volumetric techniques [l -3,6 -101, infrared spectroscopy (IR) [11 -18, 211, Auger electron spectroscopy (AES) [4,19], and X-ray photoelectron spectroscopy [20] yielding adsorption isotherms and isosteric heats of adsorption. In particular, volumetric techniques have been applied to powdered samples: Ar, 02, N2 and C 0 2 on NaCl [6], C2Hs on NaCl and KCl [7], Xe, CH4 and C2H6 on NaCl [S], Kr on NaCl, KCl and RbCl [9], water and alcoholes [lo] as well as Ar, CHI, 02, and N2 on NaF [2]. IR measurements have been reported for CO CH3F [17] and C2H6 [lS] on NaCl films and for water and alcoholes on compressed NaF-powder [lo].…”