“…Figure shows deviations between the experimental data from Assael and Dalaouti, TRC, and eq 22 for cyclopentane. The experimental data of Assael and Dalaouti 7 and TRC 9 are the viscosity of cyclopentane at atmospheric pressure, which is close to the results of saturated liquid.…”
Section: Results and Analysismentioning
confidence: 97%
“…The maximum relative deviation of the above data is less than ±1%. 2 The relative deviations of experimental data from the correlation eq 22 (cyclopentane): ▴, this work; ·, Assael and Dalaouti (ref ); ▪, TRC (ref ).…”
In this paper, the saturated liquid viscosity of cyclopentane and isopentane was measured through the capillary flow method, over the temperature range from 253.15 K to 353.15 K. The results were correlated as a function of temperature. The viscometer was calibrated using water, ethanol, acetone, and ethyl acetate.
“…Figure shows deviations between the experimental data from Assael and Dalaouti, TRC, and eq 22 for cyclopentane. The experimental data of Assael and Dalaouti 7 and TRC 9 are the viscosity of cyclopentane at atmospheric pressure, which is close to the results of saturated liquid.…”
Section: Results and Analysismentioning
confidence: 97%
“…The maximum relative deviation of the above data is less than ±1%. 2 The relative deviations of experimental data from the correlation eq 22 (cyclopentane): ▴, this work; ·, Assael and Dalaouti (ref ); ▪, TRC (ref ).…”
In this paper, the saturated liquid viscosity of cyclopentane and isopentane was measured through the capillary flow method, over the temperature range from 253.15 K to 353.15 K. The results were correlated as a function of temperature. The viscometer was calibrated using water, ethanol, acetone, and ethyl acetate.
“…A comparison of the viscosities at 298 K used in the original study with those calculated using the literature data and eq is included in SI.3. The references used for both deuteriated − and protiated ,− solvents are detailed in SI.4. Table SI.4 summarizes relevant information for each of the solvents used.…”
Diffusion-ordered NMR spectroscopy (DOSY) is increasingly widely used for the analysis of mixtures by NMR spectroscopy, dispersing the signals of different species according to their diffusion coefficients. DOSY is used primarily to distinguish between the signals of different species, with the interpretation of the diffusion coefficients observed usually being purely qualitative, for example to deduce whether one species is bigger or smaller than another. In principle, the actual values of diffusion coefficient obtained carry important information about the sizes of different species and on interactions between species, but the relationship between diffusion coefficient and molecular mass is in general a very complex one. Here a recently proposed analytical relationship between diffusion coefficient and molecular mass for the restricted case of small organic molecules is tested against a wide range of data from the scientific literature and generalized to cover a range of solvents and temperatures.
“…Lennard-Jones parameters were obtained from the method of Chung et al (Chung et al, 1988) Viscosity data from several sources (Assael & Dalaouti, 2000; K. R. Harris, Newitt, & Woolf, 2004;Kurihara, Kandil, Marsh, & Goodwin, 2007;Lambert et al, 1955;R. F. Ma et al, 2003) were used to obtain the coefficients in Table 2, and Figures 69 and 70 give deviation plots as a function of temperature and pressure respectively.…”
We describe models for the viscosity, thermal conductivity, and surface tension for selected fluids implemented in version 10.0 of the NIST computer program, NIST Standard Reference Database 23, also known as NIST Reference Fluid Thermodynamic and Transport Properties Database (REFPROP). These fluids do not presently have published reference fluid quality models in the open literature, so we provide preliminary models based on available data as an interim measure to allow calculations of these properties. Comparisons with available experimental data are given.
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