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Surface tension of solids in the absence of adsorption.

Ghasemi H, Ward CA - J Phys Chem B (2009)

Bottom Line: A method has been recently proposed for determining the value of the surface tension of a solid in the absence of adsorption, gammaS0, using material properties determined from vapor adsorption experiments.If valid, the value obtained for gammaS0 must be independent of the vapor used.We apply the proposed method to determine the value of gammaS0 for four solids using at least two vapors for each solid and find results that support the proposed method for determining gammaS0.

View Article: PubMed Central - PubMed

Affiliation: Department of Mechanical and Industrial Engineering, Thermodynamics and Kinetics Laboratory, 5 King's College Road, Toronto, Canada M5S 3G8.

ABSTRACT
A method has been recently proposed for determining the value of the surface tension of a solid in the absence of adsorption, gammaS0, using material properties determined from vapor adsorption experiments. If valid, the value obtained for gammaS0 must be independent of the vapor used. We apply the proposed method to determine the value of gammaS0 for four solids using at least two vapors for each solid and find results that support the proposed method for determining gammaS0.

No MeSH data available.


Related in: MedlinePlus

The measured amount of nitrogen adsorbed on α-alumina at 77 K is shown as solid dots.(11) The solid line was calculated using eq 2 and the values of the adsorption parameters listed in Table 1.
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fig2: The measured amount of nitrogen adsorbed on α-alumina at 77 K is shown as solid dots.(11) The solid line was calculated using eq 2 and the values of the adsorption parameters listed in Table 1.

Mentions: The measured amount of Ar adsorbing at 77 K on α-alumina that was reported by Matejova et al.(11) is shown as solid dots in Figure 1. The amount of N2 adsorbing on α-alumina at 77 K has been reported by two laboratories.11,12 These measurements are shown in Figures 2 and 3. The solid lines in these three figures were calculated using eq 2, the value of ζ, and the mean values of the isotherm parameters that are listed in Table 1. The mean-square difference between the calculations and the measurements, Δ(ζ), for Ar and N2 adsorbing on α-alumina was 0.2 and 0.8%, respectively. Note that for the measurements from two independent laboratories, there is no measurable difference between the inferred values of the isotherm parameters. We treat these parameters and ζ listed in Table 1 as material properties.


Surface tension of solids in the absence of adsorption.

Ghasemi H, Ward CA - J Phys Chem B (2009)

The measured amount of nitrogen adsorbed on α-alumina at 77 K is shown as solid dots.(11) The solid line was calculated using eq 2 and the values of the adsorption parameters listed in Table 1.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2746467&req=5

fig2: The measured amount of nitrogen adsorbed on α-alumina at 77 K is shown as solid dots.(11) The solid line was calculated using eq 2 and the values of the adsorption parameters listed in Table 1.
Mentions: The measured amount of Ar adsorbing at 77 K on α-alumina that was reported by Matejova et al.(11) is shown as solid dots in Figure 1. The amount of N2 adsorbing on α-alumina at 77 K has been reported by two laboratories.11,12 These measurements are shown in Figures 2 and 3. The solid lines in these three figures were calculated using eq 2, the value of ζ, and the mean values of the isotherm parameters that are listed in Table 1. The mean-square difference between the calculations and the measurements, Δ(ζ), for Ar and N2 adsorbing on α-alumina was 0.2 and 0.8%, respectively. Note that for the measurements from two independent laboratories, there is no measurable difference between the inferred values of the isotherm parameters. We treat these parameters and ζ listed in Table 1 as material properties.

Bottom Line: A method has been recently proposed for determining the value of the surface tension of a solid in the absence of adsorption, gammaS0, using material properties determined from vapor adsorption experiments.If valid, the value obtained for gammaS0 must be independent of the vapor used.We apply the proposed method to determine the value of gammaS0 for four solids using at least two vapors for each solid and find results that support the proposed method for determining gammaS0.

View Article: PubMed Central - PubMed

Affiliation: Department of Mechanical and Industrial Engineering, Thermodynamics and Kinetics Laboratory, 5 King's College Road, Toronto, Canada M5S 3G8.

ABSTRACT
A method has been recently proposed for determining the value of the surface tension of a solid in the absence of adsorption, gammaS0, using material properties determined from vapor adsorption experiments. If valid, the value obtained for gammaS0 must be independent of the vapor used. We apply the proposed method to determine the value of gammaS0 for four solids using at least two vapors for each solid and find results that support the proposed method for determining gammaS0.

No MeSH data available.


Related in: MedlinePlus