PVT of toluene at temperatures to 673 K

Straty, G. C.; Ball, M. J.; Bruno, Thomas J.

doi:10.1021/je00052a016

Cited by 26 publications

(60 citation statements)

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“…The data by Donham [25] differ from the present saturated-vapor densities within 3.3%. Good agreement within 1.44% is found between the present saturated-vapor densities and the data reported by Straty et al [28]. The deviations between the present data and the values reported by Suleimanov [18] for saturated densities in the critical region are within 2.8%.…”

Section: Comparisons With Published Data and Calculations With Eossupporting

confidence: 89%

“…Very restricted experimental saturated-liquid and -vapor density data are available for pure methanol in the critical region [4,6,14,[18][19][20][21][22][23][24][25][26][27][28][29]. Suleimanov [18] reported near-critical saturated densities for pure methanol (water content of less than 0.04 mass% and an organic content less than 0.02 mass%) by observing the discontinuity in the ischoric heat capacity at the phase-transition boundary along each fixed isochore.…”

Section: Saturated-density Measurementsmentioning

confidence: 99%

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Isochoric Heat-Capacity Measurements for Pure Methanol in the Near-Critical and Supercritical Regions

et al. 2007

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Isochoric heat-capacity measurements for pure methanol are presented as a function of temperature at fixed densities between 136 and 750 kg·m −3 . The measurements cover a range of temperatures from 300 to 556 K. The coverage includes the one-and two-phase regions, the coexistence curve, the near-critical, and the supercritical regions. A high-temperature, high-pressure, adiabatic, and nearly constant-volume calorimeter was used for the measurements. Uncertainties of the heat-capacity measurements are estimated to be 2-3% depending on the experimental density and temperature. Temperatures at saturation, T S (ρ), for each measured density (isochore) were measured using a quasi-static thermogram technique. The uncertainty of the phase-transition temperature measurements is 0.02 K. The critical temperature and the critical density for pure methanol were extracted from the saturated data (T S , ρ S ) near the critical point. For one near-critical isochore (398.92 kg·m −3 ), the measurements were performed in both cooling and heating regimes to estimate the effect of thermal decomposition (chemical reaction) on the heat capacity and phase-transition properties of methanol. The measured values of C V and saturated densities (T S , ρ S ) for methanol were compared with values calculated from various multiparametric equations of state (EOS) (IUPAC, Bender-type, polynomial-type, and nonanalytical-type), scaling-type (crossover) EOS, and various correlations. The measured C V data have been analyzed and interpreted in terms of extended scaling equations for 163 0195-928X/07/0200-0163/0 © 2007 Springer Science+Business Media, LLC 164 Polikhronidi et al.the selected thermodynamic paths (critical isochore and coexistence curve) to accurately calculate the values of the asymptotical critical amplitudes (A ± 0 and B 0 ).

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Section: Comparisons With Published Data and Calculations With Eossupporting

confidence: 89%

Section: Saturated-density Measurementsmentioning

confidence: 99%

Isochoric Heat-Capacity Measurements for Pure Methanol in the Near-Critical and Supercritical Regions

et al. 2007

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“…A comparison of the new (p, q, T) values of toluene with the measurements of seven other experimental groups [26,[31][32][33][34][35][36] is presented in figures 5 and 6 in three deviation diagrams. In figure 5, the diagrams show the deviations between measured values and values calculated from equation (1) versus pressure.…”

Section: Toluenementioning

confidence: 99%

Measurement and correlation of the (p,ρ,T) relation of liquid cyclohexane, toluene, and ethanol in the temperature range from 233.15 K to 473.15 K at pressures up to 30 MPa for use as density reference liquids

Sommer

Kleinrahm

Wagner

2011

The Journal of Chemical Thermodynamics

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“…This observation is expected in view of the work by Haensel [10]. Benzene gives an erratic response, since at elevated temperatures (and in contact with stainless steels) the preferred reaction is the formation of biphenyl [18,19]. After several weeks of operation, a deposit of coke was found to have formed upon the surface of the coated junctions.…”

Section: Preliminary Resultsmentioning

confidence: 89%

Catalytic cracking as the basis for a potential detector for gas chromatography

Bruno¹

1987

J. RES. NATL. BUR. STAN.

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This short paper describes the design, construction and preliminary experimental results obtained with a potential new detector for the gas chromatographic analysis of hydrocarbon species. The functional principle of the detector is the measurement of the temperature change of a catalyst as catalytic cracking occurs on its surface. The catalyst is a silicon dioxide-aluminum oxide-zeolite mixture similar to the materials used commercially in industrial riser crackers. The temperature drop which occurs at the onset of cracking is measured using two opposed thermocouple junctions. The first prototype, described in this paper, consists of a single pair of junctions. After appropriate signal conditioning (using a commercially available filter-amplifier), the thermocouple output is logged using an electronic integrator. Work on multi-junction cells, which is currently in progress, is also described briefly.

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PVT of toluene at temperatures to 673 K

Cited by 26 publications

References 1 publication

Isochoric Heat-Capacity Measurements for Pure Methanol in the Near-Critical and Supercritical Regions

Isochoric Heat-Capacity Measurements for Pure Methanol in the Near-Critical and Supercritical Regions

Measurement and correlation of the (p,ρ,T) relation of liquid cyclohexane, toluene, and ethanol in the temperature range from 233.15 K to 473.15 K at pressures up to 30 MPa for use as density reference liquids

Catalytic cracking as the basis for a potential detector for gas chromatography

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