IUPAC-NIST Solubilities Database

IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Solubility System: Carbon dioxide with Methane and Polyarylate Ardel (PA)

Components:
   (1) Carbon dioxide with Methane; CO2, CH4; [124-38-9, 74-82-8]  NIST Chemistry WebBook for detail
   (2) Polyarylate Ardel (PA); ; [25639-68-3]  NIST Chemistry WebBook for detail

Original Measurements:
   F.R. Sheu, R.T. Chern, V.T. Stannett and H.B. Hopfenberg, J. Polym. Sci., Part B: Polym. Phys 26, 883-892 (1988).

Variables:
   Temperature = 308 K
   Pressure = 0.1-2.3 MPa

Prepared By:
   Yu. P. Yampol'skii

Experimental Data:   (Subscripts 1,2,3, ..., in column headings refer to components 1,2,3, ...)

Table 1. Dual mode sorption parameters for gases in polyarylate at 308 K
T/K	Chemical Name	Henry's law constant, K [cm³(STP)/cm³ atm]	Langmuir's parameter, C_H [cm³(STP) cm^-3]	Affinity Coefficient b [atm^-1]
	CO2	1.98	19.8	19.8
	CH4	0.27	9.0	9.0

Table 2. Sorption isotherms of carbon dioxide and methane in polyarylate at 308 K (The original data were represented graphically)
Chemical Name	Pressure [MPa]	Sorption [(V₁(STP)/V₂)]
CO2	0.09	4.55
CO2	0.12	5.87
CO2	0.13	6.75
CO2	0.17	7.91
CO2	0.29	11.10
CO2	0.32	12.26
CO2	0.39	13.70
CO2	0.48	15.87
CO2	0.58	17.44
CO2	0.63	18.45
CO2	0.68	19.31
CO2	0.78	21.18
CO2	0.97	23.88
CO2	1.08	25.44
CO2	1.14	26.30
CO2	1.21	26.85
CO2	1.44	29.83
CO2	1.63	31.79
CO2	1.73	32.92
CO2	1.77	33.64
CO2	1.92	35.04
CO2	2.19	37.85
CH4	0.12	1.41
CH4	0.33	3.15
CH4	0.53	4.62
CH4	0.72	5.79
CH4	0.96	7.21
CH4	1.11	8.03
CH4	1.31	9.06
CH4	1.59	10.21
CH4	1.85	11.19
CH4	2.21	12.42

Method/Apparatus/Procedure:
   Sorption apparatus and procedure were the same as in Ref. 1.

Source and Purity of Materials:
   PA: Union Carbide Co., density 1.204 g/cm3, glass transition temperature 463 K.

Estimated Errors:

   Temperature: No information given.

References:
   ¹E. S. Sanders, W. J. Koros, H. B. Hopfenberg, and V. T. Stannets, J. Membr. Sri. 13, 61(1983).