189 results found
Fernandez J, Assael MJ, Enick RM, et al., 2019, International Standard for viscosity at temperatures up to 473 K and pressures below 200 MPa (IUPAC Technical Report), PURE AND APPLIED CHEMISTRY, Vol: 91, Pages: 161-172, ISSN: 0033-4545
Stevar MSP, Böhm C, Notarki KT, et al., 2019, Wettability of calcite under carbon storage conditions, International Journal of Greenhouse Gas Control, Vol: 84, Pages: 180-189, ISSN: 1750-5836
© 2019 Elsevier Ltd Knowledge of interfacial properties, including both fluid-fluid interfacial tension and mineral wettability is essential for accurate simulation of carbon dioxide storage in geological formations. In this context, carbonate reservoirs, especially saline aquifers, are of great interest due to their vast storage capacities; therefore, it is imperative to attain a thorough understanding of their wettability under the high-pressure, high-temperature (HPHT) conditions of CO 2 storage. To this purpose, contact angles have been measured for the system CO 2 + NaHCO 3 (aq) + calcite under HPHT conditions. Calcite is representative of limestone minerals and the brine chemistry and molality (1 mol·kg −1 ) have been chosen to inhibit dissolution reactions. Both static (sessile drop) and dynamic (tilting plate) contact angle measurements were carried out under reaction-free conditions at temperatures from (298 to 373) K and at pressures up to 30 MPa. The influences of surface roughness and cleanliness have also been addressed in this study. We found that calcite is mainly brine-wet, but it can turn intermediate-wet or even weakly CO 2 -wet at intermediate pressures (around 10 MPa) and low temperature conditions (around 300 K). The results presented in this work may prove useful for characterizing the wettability of a wide variety of calcite (limestone) surfaces that one might expect to encounter in natural reservoirs.
Anabaraonye BU, Crawshaw JP, Trusler JPM, 2019, Brine chemistry effects in calcite dissolution kinetics at reservoir conditions, Chemical Geology, Vol: 509, Pages: 92-102, ISSN: 0009-2541
Understanding the chemical interactions between CO 2 -saturated brine systems and reservoir rocks is essential for predicting the fate of CO 2 following injection into a geological reservoir. In this work, the dissolution rates of calcite (CaCO 3 ) in CO 2 -saturated brines were measured at temperatures between 325 K and 373 K and at pressures up to 10 MPa. The experiments were performed in batch reactors implementing the rotating disk technique in order to eliminate the influence of fluid-surface mass transport resistance and obtain surface reaction rates. Three aqueous brine systems were investigated in this study: NaCl at a molality m = 2.5 mol·kg −1 , NaHCO 3 with m ranging from (0.005 to 1) mol·kg −1 and a multicomponent Na-Mg-K-Cl-SO 4 -HCO 3 brine system with an ionic strength of 1.8 mol·kg −1 . Measured dissolution rates were compared with predictions from previously published models. Activity calculations were performed according to the Pitzer model as implemented in the PHREEQC geochemical simulator. Calcite dissolution rates in NaCl and the multicomponent brine system showed minor increases when compared to the (CO 2 + H 2 O) system at identical conditions, despite the lower concentration of dissolved CO 2 . These trends are consistent with the expected minor decreases in solution pH. In NaHCO 3 systems, consistent with increase in solution pH, significant decreases in dissolution rates were observed. In addition, these systems significantly deviated from model predictions at higher salt molalities. Vertical scanning interferometry (VSI) was used to examine the mineral surfaces before and after dissolution experiments to provide qualitative information on saturation states and dissolution mechanism.
Al Ghafri SZS, Trusler JPM, 2019, Phase equilibria of (Methylbenzene plus Carbon dioxide plus Methane) at elevated pressure: Experiment and modelling, JOURNAL OF SUPERCRITICAL FLUIDS, Vol: 145, Pages: 1-9, ISSN: 0896-8446
Sanchez-Vicente Y, Emerson I, Glover R, et al., 2019, Viscosities of Liquid Hexadecane at Temperatures between 323 K and 673 K and Pressures up to 4 MPa Measured Using a Dual-Capillary Viscometer, Journal of Chemical and Engineering Data, Vol: 64, Pages: 706-712, ISSN: 0021-9568
Copyright © 2019 American Chemical Society. We report viscosities of liquid hexadecane measured at temperatures between 323 K and 673 K and at pressures up to 4.0 MPa. This study significantly extends the temperature range over which viscosity data for hexadecane are available. The experiments were carried out using a dual-capillary viscometer that measures the ratio of the viscosity at the temperature in question to that at a reference temperature, 298.15 K in this work, at which the viscosity is well known. Absolute viscosities were then obtained with an estimated expanded relative uncertainty of about 3% at 95% confidence. An empirical function was developed to correlate the viscosity ratio with the density ratio and this fitted the experimental data within about 1%. The results were found to agree well with the existing literature data.
Ramdin M, Morrison ART, de Groen M, et al., 2019, High Pressure Electrochemical Reduction of CO2 to Formic Acid/Formate: A Comparison between Bipolar Membranes and Cation Exchange Membranes, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, Vol: 58, Pages: 1834-1847, ISSN: 0888-5885
Chow YTF, Maitland GC, Trusler JPM, 2018, Interfacial tensions of (H2O + H-2) and (H2O + CO2 + H-2) systems at temperatures of (298-448) K and pressures up to 45 MPa, Fluid Phase Equilibria, Vol: 475, Pages: 37-44, ISSN: 0378-3812
We report new interfacial tension (IFT) measurements of the (H2O + CO2 + H2) and (H2O + H2) systems at pressures of (0.5 to 45) MPa, and temperatures of (298.15 to 448.15) K, measured by the pendant-drop method. The expanded uncertainties at 95% confidence are 0.05 K for temperature, 70 kPa for pressure, 0.017·γ for IFT in the both the binary (H2O + H2) system and the ternary (CO2 + H2 + H2O) system. Generally, the IFT was found to decrease with both increasing pressure and increasing temperature. However, for (H2O + H2) at the lowest two temperatures investigated, the isothermal IFT data were found to exhibit a maximum as a function of pressure at low pressures before declining with increasing pressure. An empirical correlation has been developed for the IFT of the (H2O + H2) system in the full range of conditions investigated, with an average absolute deviation of 0.16 mN m−1, and this is used to facilitate a comparison with literature values. Estimates of the IFT of the (H2O + CO2 + H2) ternary system, by an empirical combining rule based on the coexisting phase compositions and the interfacial tensions of the binary systems, were found to be unsuitable at low temperatures, with an average absolute deviation of 3.6 mN m−1 over all the conditions investigated.
Souza LFS, Al Ghafri SZS, Trusler JPM, 2018, Measurement and modelling of the vapor-liquid equilibrium of (CO2 + CO) at temperatures between (218.15 and 302.93) K at pressures up to 15 MPa, Journal of Chemical Thermodynamics, Vol: 126, Pages: 63-73, ISSN: 0021-9614
Precise knowledge of vapor–liquid equilibrium (VLE) data of (CO2 + diluent) mixtures is crucial in the design and operation of carbon capture, transportation and storage processes. VLE measurements of the (CO2 + CO) system are reported along seven isotherms at temperatures ranging from just above the triple-point temperature of CO2 to 302.93 K and at pressures from the vapor pressure of pure CO2 to approximately 15 MPa, including near-critical mixture states for all isotherms. The measurements are associated with estimated standard uncertainties of 0.006 K for temperature, 0.009 MPa for pressure and 0.011x(1 − x) for mole fraction x. The new VLE data have been compared with two thermodynamic models: the Peng-Robinson equation of state (PR-EOS) and a multi-fluid Helmholtz-energy equation of state known as EOS-CG. The PR-EOS was used with a single temperature-dependent binary interaction parameter, which was fitted to the experimental data. In contrast, EOS-CG was used in a purely-predictive mode with no parameters fitted to the present results. While PR-EOS generally agrees fairly well with the experimental data, EOS-CG showed significantly better agreement, especially close to the critical point.
Tay WJ, Trusler JPM, 2018, Density, sound speed and derived thermophysical properties of n-nonane at temperatures between (283.15 and 473.15) K and at pressures up to 390 MPa, Journal of Chemical Thermodynamics, Vol: 124, Pages: 107-122, ISSN: 0021-9614
In this paper, we present density and speed-of-sound experimental measurements for n-nonane at temperatures between (283.15 and 473.15) K and pressures up to 68 MPa and 390 MPa respectively. The density measurements were performed with a vibrating-tube densimeter and the speed-of-sound measurements were carried out in a dual-path pulse-echo apparatus. The vibrating-tube densimeter was calibrated using pure helium and water over the full range of temperature and pressure investigated, while the speed-of-sound apparatus was calibrated using pure water at low pressure over the full range of temperature. The expanded relative uncertainties of the measurements were 0.08% for density and between (0.1 and 0.3)% for sound speed at 95% confidence. The density data were correlated with the modified Tait equation over the entire temperature and pressure range, with an absolute average relative deviation of 0.006%. An empirical equation was developed to represent the sound speed data with an absolute average relative deviation of 0.03%. Both sets of data were compared with the predictions from the equation of state developed by Lemmon and Span. Comparisons have also been made with the available literature and satisfactory agreement was found. Correlations were developed for the density and isobaric heat capacity of the liquid as functions of temperature at a reference pressure of 0.1 MPa, the latter based on literature data. Combining these correlations with the sound-speed surface, properties of the liquid were computed by thermodynamic integration up to a pressure of 390 MPa. Density, isobaric heat capacity, isothermal compressibility and isobaric expansivity values are reported, and their uncertainties were carefully investigated.
Sanchez-Vicente Y, Tay WJ, Al Ghafri SZ, et al., 2018, Thermodynamics of carbon dioxide-hydrocarbon systems, APPLIED ENERGY, Vol: 220, Pages: 629-642, ISSN: 0306-2619
Chow YTF, Maitland GC, Stevar MSP, et al., 2018, Correction to "Interfacial Tension of (Brines + CO2): (0.864 NaCl + 0.136 KCl) at Temperatures between (298 and 448) K, Pressures between (2 and 50) MPa, and Total Molalities of (1 to 5) mol.kg(-1)", Journal of Chemical and Engineering Data, Vol: 63, Pages: 2333-2334, ISSN: 0021-9568
Li et al.(1) reported interfacial tension measurements between carbon dioxide and the mixed brine (0.864 NaCl + 0.136 KCl) over wide ranges of temperature, pressure and total salt molality. We have determined that their data on the isotherm at 298.15 K for the salt molaity of 0.98 mol·kg–1 are erroneous; results at other temperatures and salt molalities reported in(1) are not affected by the error. We report herein new data, measured at T = 298.15 K and at pressures between (2 and 51) MPa, to replace the corresponding isotherm reported in Table 2 of the original reference.
Humberg K, Richter M, Trusler JPM, et al., 2018, Measurement and modeling of the viscosity of (nitrogen plus carbon dioxide) mixtures at temperatures from (253.15 to 473.15) K with pressures up to 2 MPa, JOURNAL OF CHEMICAL THERMODYNAMICS, Vol: 120, Pages: 191-204, ISSN: 0021-9614
Li X, Peng C, Crawshaw JP, et al., 2018, The pH of CO2-saturated aqueous NaCl and NaHCO3 solutions at temperatures between 308 K and 373 K at pressures up to 15 MPa, FLUID PHASE EQUILIBRIA, Vol: 458, Pages: 253-263, ISSN: 0378-3812
Al Ghafri SZS, Maitland GC, Trusler JPM, 2017, Phase Behavior of the System (Carbon Dioxide plus n-Heptane plus Methylbenzene): A Comparison between Experimental Data and SAFT-gamma-Mie Predictions, JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 62, Pages: 2826-2836, ISSN: 0021-9568
Patzschke CF, Zhang J, Fennell PS, et al., 2017, Density and Viscosity of Partially Carbonated Aqueous Solutions Containing a Tertiary Alkanolamine and Piperazine at Temperatures between 298.15 and 353.15 K, JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 62, Pages: 2075-2083, ISSN: 0021-9568
Trusler JPM, Lemmon EW, 2017, Determination of the thermodynamic properties of water from the speed of sound, JOURNAL OF CHEMICAL THERMODYNAMICS, Vol: 109, Pages: 61-70, ISSN: 0021-9614
Hu R, Crawshaw JP, Trusler JPM, et al., 2017, Rheology and Phase Behavior of Carbon Dioxide and Crude Oil Mixtures, ENERGY & FUELS, Vol: 31, Pages: 5776-5784, ISSN: 0887-0624
Hu R, Trusler JPM, Crawshaw JP, 2017, Effect of CO2 Dissolution on the Rheology of a Heavy Oil/Water Emulsion, 17th International Conference on Petroleum Phase Behavior and Fouling (PetroPhase), Publisher: AMER CHEMICAL SOC, Pages: 3399-3408, ISSN: 0887-0624
Efika EC, Contreras Quintanilla C, Torin Ollarves GA, et al., High-Pressure High-Temperature Phase Equilibria of Crude Oil + CO2, Petrophase 2017
Mohammed M, Ciotta F, Trusler JPM, 2017, Viscosities and Densities of Binary Mixtures of Hexadecane with Dissolved Methane or Carbon Dioxide at Temperatures from (298 to 473) K and at Pressures up to 120 MPa, JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 62, Pages: 422-439, ISSN: 0021-9568
Trusler JPM, 2017, Thermophysical Properties and Phase Behavior of Fluids for Application in Carbon Capture and Storage Processes, ANNUAL REVIEW OF CHEMICAL AND BIOMOLECULAR ENGINEERING, VOL 8, Vol: 8, Pages: 381-402, ISSN: 1947-5438
Contreras Quintanilla C, Efika EC, Torin Ollarves GA, et al., Experimental and Modelling study of the HPHT Phase Equilibria of crude oil, 29th European Symposium on Applied Thermodynamics (ESAT 2017)
Torin Ollarves GA, Efika EC, Trusler JPM, Phase Behaviour of CO2 + Methylcyclohexane + N2, 29th European Symposium on Applied Thermodynamics (ESAT 2017).
Moultos OA, Tsimpanogiannis IN, Panagiotopoulos AZ, et al., 2016, Atomistic Molecular Dynamics Simulations of Carbon Dioxide Diffusivity in n-Hexane, n-Decane, n-Hexadecane, Cyclohexane, and Squalane, JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 120, Pages: 12890-12900, ISSN: 1520-6106
Cadogan SP, Mistry B, Wong Y, et al., 2016, Diffusion Coefficients of Carbon Dioxide in Eight Hydrocarbon Liquids at Temperatures between (298.15 and 423.15) K at Pressures up to 69 MPa, JOURNAL OF CHEMICAL AND ENGINEERING DATA, Vol: 61, Pages: 3922-3932, ISSN: 0021-9568
Efika EC, Torin Ollarves GA, Al Ghafri SZS, et al., Experimental and Modelling Study of the Phase Equilibria of (CO2 + Methylcylohexane + N2) at High Pressures and Temperatures, American Institute of Chemical Engineers (AICHe) Annual Meeting
Trusler JPM, 2016, Introduction to the Special Issue on carbon storage, JOURNAL OF CHEMICAL THERMODYNAMICS, Vol: 93, Pages: 273-273, ISSN: 0021-9614
Chow YTF, Maitland GC, Trusler JPM, 2016, Interfacial tensions of the (CO2 + N-2 + H2O) system at temperatures of (298 to 448) K and pressures up to 40 MPa, JOURNAL OF CHEMICAL THERMODYNAMICS, Vol: 93, Pages: 392-403, ISSN: 0021-9614
Efika EC, Hoballah R, Li X, et al., 2016, Saturated phase densities of (CO2 + H2O) at temperatures from (293 to 450) K and pressures up to 64 MPa, JOURNAL OF CHEMICAL THERMODYNAMICS, Vol: 93, Pages: 347-359, ISSN: 0021-9614
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