On Physical Adsorption. VII. Two-dimensional Critical Phenomena of Diborane Adsorbed on Sodium Chloride<sup>1</sup>

Ross, Sydney; Clark, Hadden

doi:10.1021/ja01646a013

Cited by 9 publications

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“…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.…”

Section: Introductionmentioning

confidence: 96%

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

Heidberg

Kampshoff

Schönekäs

et al. 1990

Ber Bunsenges Phys Chem

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Adsorption 1 Molecular Structure / Phase Transitions 1 Spectroscopy, Infrared Infrared spectra of 13C1602 adsorbed on the NaCl(100) cleavage plane from zero to monolayer coverage 0 and the corresponding adsorption isotherms have been measured. At 0.3 Q , 6 Q 6 Q, , 0, being the C 0 2 monolayer coverage, the vj vibrational band of adsorbed COz shows a doublet structure due to a correlation field, whereas at Q 5 0.3 0, a single band is observed. -The coverage and polarization dependence of the spectra as well as the shape of the isotherms between 80 and 95 K adsorbate temperature reveal a two-dimensional (2D) first order phase transition from a 2D low density phase into a 2D island-like solid. The isosteric heats of adsorption have been determined to be 28.5 kJ rno1-l and 24 kJ mol-' (-10% and +25% error) for Q = 0.08 Qm and Q = 0.96 Q , , respectively. -In the 2D

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Section: Introductionmentioning

confidence: 96%

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

Heidberg

Kampshoff

Schönekäs

et al. 1990

Ber Bunsenges Phys Chem

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“…"Ctroscopy;I,t; intrared spectroscopy, [7][8][9] photochemistry, \(J and dynamics. 11 The molecule-surface interaction has also been the subject of recent calculations. [12][13][14][15] Each of these approaches yields valuable information.…”

Section: Introductionmentioning

confidence: 99%

Infrared spectroscopy of monolayer CH4 on NaCl(100)

Quattrocci

Ewing

1992

The Journal of Chemical Physics

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Polarized infrared spectra of CH4 adsorbed on NaCl(100) in the temperature range 4–47 K are reported. Coverage-dependent data indicate that there is only one kind of adsorption site. The adsorbate layer is also seen to grow in the form of constant density islands. A partial degeneracy breaking into doublets is observed in both the ν3 and ν4 infrared-active vibrations. Analysis of the ν4 doublet reveals one transition dipole component perpendicular to the (100) face of NaCl and the others in the plane of the face. Isotopic dilution experiments of CH4 in CD4 show that some of the ν4 doublet separation can be attributed to resonant or dynamic adsorbate–adsorbate interactions. The remaining splitting cannot be specifically assigned to any particular interaction but must involve static adsorbate–adsorbate coupling and surface–adsorbate interactions. A structural analysis consistent with the spectroscopic data and the symmetry of slab groups is developed. Two possible adsorbate geometries are considered. A unique determination of the adsorbate geometry will have to await other surface measurement techniques.

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Physical Adsorption by Homogeneous and Heterogeneous Solid Surfaces

Ross

1966

Fundamental Phenomena in the Materials Sciences

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On Physical Adsorption. VII. Two-dimensional Critical Phenomena of Diborane Adsorbed on Sodium Chloride¹

Cited by 9 publications

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

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

Infrared spectroscopy of monolayer CH4 on NaCl(100)

Physical Adsorption by Homogeneous and Heterogeneous Solid Surfaces

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On Physical Adsorption. VII. Two-dimensional Critical Phenomena of Diborane Adsorbed on Sodium Chloride1

Cited by 9 publications

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

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

Infrared spectroscopy of monolayer CH4 on NaCl(100)

Physical Adsorption by Homogeneous and Heterogeneous Solid Surfaces

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On Physical Adsorption. VII. Two-dimensional Critical Phenomena of Diborane Adsorbed on Sodium Chloride¹

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

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