Experimental study of the density and viscosity of 1-ethyl-3-methylimidazolium ethyl sulfate

Schmidt, Hannes; Stephan, Martin; Safarov, Javid; Kul, Ismail; Nocke, Jürgen; Abdulagatov, Ilmutdin M.; Hassel, Egon

doi:10.1016/j.jct.2011.09.027

Cited by 87 publications

(37 citation statements)

References 68 publications

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“…As explained previously, many authors have confirmed this correlation by comparing experimental diffusivities with the diffusivities measured by this correlation . Temperature dependency of viscosity for the three ILs [emim][OAc], [emim][EtSO 4 ] and [emim][MeSO 4 ] have been studied by Nazet et al ., Schmidt et al . and Costa et al ., respectively.…”

Section: Resultssupporting

confidence: 65%

“…For the three ILs, [emim][OAc], [emim][EtSO 4 ], and [emim][MeSO 4 ], densities had strong dependency on temperature which in turn affected the Henry's law constant and solubility of CO 2 . Temperature dependency of the density for the three ILs [emim][OAc], [emim][EtSO 4 ], are [emim][MeSO 4 ] are shown in Eqns (12)–(14), respectively . The equations correspond to density in kg·m −3 and temperature in kelvin:

ρ (T) = 1280.8 + 0.608 T

ρ (T) = 1451.5928 - 0.757562 T + 0.00013391 T^{2}

\ln ρ (T) = 7.33100 - 6.17220 \times 10^{- 4} T + 1.3862 \times 10^{- 4} T^{2}

…”

Section: Model Developmentmentioning

confidence: 99%

“…And

D_{{normalCO}_{2} - shell}

can be expressed as:

D_{{normalCO}_{2} - shell} = 2.66 \times 10^{- 3} \frac{1}{μ_{italicIL}^{0.66} v_{{CO}_{2}}^{1.04}}

where μ IL (in mPa·s) and

v_{{CO}_{2}} (in {normalcm}^{3} \cdot {normalmol}^{- 1})

are viscosity of IL and molar volume of CO 2 . Temperature dependency of the viscosity for the three ILs [emim][OAc], [emim][EtSO 4 ], and [emim][MeSO 4 ] are presented in Eqns (20)–(22), respectively . The equations correspond to viscosity in mPa s and temperature in kelvin:

\ln μ (T) = - 1.657 + (\frac{673.7}{T - 196.1})

\ln μ (T) = - 1.6558 + (\frac{792.98}{T - 171.15})

\ln μ (T) = \ln ρ italicM - 18.25 + (\frac{1266.1}{T})

…”

Section: Model Developmentmentioning

confidence: 99%

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Mathematical modeling of CO₂ absorption with ionic liquids in a membrane contactor, study of absorption kinetics and influence of temperature

Sohaib

Gómez‐Coma

Albo

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND This work presents a comprehensive study of carbon dioxide (CO2) capture from CO2/N2 mixtures in a hollow fiber membrane contactor (HFMC). The absorbents considered were three different ionic liquids (ILs): 1‐ethyl‐3‐methylimidazolium acetate ([emim][OAc]), 1‐ethyl‐3‐methylimidazolium ethylsulfate ([emim][EtSO4]) and 1‐ethyl‐3‐methylimidazolium methyl sulfate ([emim][MeSO4]). A comprehensive two‐dimensional (2D) mathematical model for the transport of CO2 was developed and solved for steady‐state and pseudo steady‐state modes. For pseudo steady‐state mode, the 2D model was linked with a dynamic model applied on a tank from which the IL was recirculated into the shell side of the HFMC. RESULTS The model showed excellent agreement between the simulations and experimental data within the range of 2 to 5% standard deviation. Initially, overall mass transfer coefficients of 7.6 × 10−6 (m s−1), 1.6 × 10−6 (m s−1) and 3.7 × 10−6 (m s−1) were obtained for [emim][OAc], [emim][EtSO4] and [emim][MeSO4], respectively. Solubility, diffusivity and absorption efficiency of CO2 in ILs showed strong dependence on the temperature. Furthermore, concentration drop in the wetted portion of the membrane, effect of porosity, tortuosity, gas and absorbent flow rates were systematically studied. CONCLUSION Findings of both experimental and modeling work suggests that in spite of the difference of extraction efficiency, these ILs are potential absorbents for CO2 in membrane contactors. Moreover, the modeling approach was found very effective to predict the absorption behavior of CO2 in ILs and to study the wetting phenomena and parametric effects. © 2019 Society of Chemical Industry

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Section: Resultssupporting

confidence: 65%

ρ (T) = 1280.8 + 0.608 T

ρ (T) = 1451.5928 - 0.757562 T + 0.00013391 T^{2}

\ln ρ (T) = 7.33100 - 6.17220 \times 10^{- 4} T + 1.3862 \times 10^{- 4} T^{2}

…”

Section: Model Developmentmentioning

confidence: 99%

“…And

D_{{normalCO}_{2} - shell}

can be expressed as:

D_{{normalCO}_{2} - shell} = 2.66 \times 10^{- 3} \frac{1}{μ_{italicIL}^{0.66} v_{{CO}_{2}}^{1.04}}

where μ IL (in mPa·s) and

v_{{CO}_{2}} (in {normalcm}^{3} \cdot {normalmol}^{- 1})

\ln μ (T) = - 1.657 + (\frac{673.7}{T - 196.1})

\ln μ (T) = - 1.6558 + (\frac{792.98}{T - 171.15})

\ln μ (T) = \ln ρ italicM - 18.25 + (\frac{1266.1}{T})

…”

Section: Model Developmentmentioning

confidence: 99%

See 1 more Smart Citation

Mathematical modeling of CO₂ absorption with ionic liquids in a membrane contactor, study of absorption kinetics and influence of temperature

Sohaib

Gómez‐Coma

Albo

et al. 2019

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

show abstract

“…based on the thermodynamic formalism, which relate pρT data to speeds of sound. 196,198,200,204,207,312 The first example of EoS used to determine the speed of sound data for ILs was reported by the group of Safarov et al 204…”

Section: Theoretical Modelsmentioning

confidence: 99%

Speed of Sound and Ultrasound Absorption in Ionic Liquids

et al. 2017

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A complete review of the literature data on the speed of sound and ultrasound absorption in pure ionic liquids (ILs) is presented. Apart of the analysis of data published to date, the significance of the speed of sound in ILs is regarded. An analysis of experimental methods described in the literature to determine the speed of sound in ILs as a function of temperature and pressure is reported, and the relevance of ultrasound absorption in acoustic investigations is discussed. Careful attention was paid to highlight possible artifacts, and side phenomena related to the absorption and relaxation present in such measurements. Then, an overview of existing data is depicted to describe the temperature and pressure dependences on the speed of sound in ILs, as well as the impact of impurities in ILs on this property. A relation between ions structure and speeds of sound is presented by highlighting existing correlation and evaluative methods described in the literature. Importantly, a critical analysis of speeds of sound in ILs vs those in classical molecular solvents is presented to compare these two classes of compounds. The last part presents the importance of acoustic investigations for chemical engineering design and possible industrial applications of ILs.

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“…[ 37 ] 1-ethyl-3-methylimidazolium ethyl sulfate has a surface tension of 47 mN/m, [ 38 ] which is within the same order of magnitude as water, and a viscosity similar to that of water. [ 39 ] This ionic liquid exhibited θ adv = 101° (±2°) and a θ r = of 89° (±3°) on a smooth surface that was chemically equivalent to the structured surfaces used. This was comparable to water, which exhibited θ adv = 115° (±2°) and θ rec = 94° (±2°) on a smooth surface.…”

Section: Introductionmentioning

confidence: 89%

Length Scale Selects Directionality of Droplets on Vibrating Pillar Ratchet

Agapov

Boreyko

Briggs

et al. 2014

Adv Materials Inter

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Directional control of droplet motion at room temperature is of interest for applications such as microfluidic devices, self‐cleaning coatings, and directional adhesives. Here, arrays of tilted pillars ranging in height from the nanoscale to the microscale are used as structural ratchets to directionally transport water at room temperature. Water droplets deposited onto vibrating chips with a nanostructured ratchet move preferentially in the direction of the feature tilt while the opposite directionality is observed in the case of microstructured ratchets. This remarkable switch in directionality is consistent with changes in the contact angle hysteresis. To glean further insights into the length scale dependent asymmetric contact angle hysteresis, the contact lines formed by a nonvolatile room temperature ionic liquid placed onto the tilted pillar arrays were visualized and analyzed in situ in a scanning electron microscope. The ability to tune droplet directionality by merely changing the length scale of surface features all etched at the same tilt angle would be a versatile tool for manipulating multiphase flows and for selecting droplet directionality in other lap‐on‐chip applications.

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Experimental study of the density and viscosity of 1-ethyl-3-methylimidazolium ethyl sulfate

Cited by 87 publications

References 68 publications

Mathematical modeling of CO₂ absorption with ionic liquids in a membrane contactor, study of absorption kinetics and influence of temperature

Mathematical modeling of CO₂ absorption with ionic liquids in a membrane contactor, study of absorption kinetics and influence of temperature

Speed of Sound and Ultrasound Absorption in Ionic Liquids

Length Scale Selects Directionality of Droplets on Vibrating Pillar Ratchet

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Experimental study of the density and viscosity of 1-ethyl-3-methylimidazolium ethyl sulfate

Cited by 87 publications

References 68 publications

Mathematical modeling of CO2 absorption with ionic liquids in a membrane contactor, study of absorption kinetics and influence of temperature

Mathematical modeling of CO2 absorption with ionic liquids in a membrane contactor, study of absorption kinetics and influence of temperature

Speed of Sound and Ultrasound Absorption in Ionic Liquids

Length Scale Selects Directionality of Droplets on Vibrating Pillar Ratchet

Contact Info

Product

Resources

About

Mathematical modeling of CO₂ absorption with ionic liquids in a membrane contactor, study of absorption kinetics and influence of temperature

Mathematical modeling of CO₂ absorption with ionic liquids in a membrane contactor, study of absorption kinetics and influence of temperature