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Measurement of relative static permittivity and solvatochromic parameters of binary and ternary CO2-expanded green solvents

Cui, Jingwen (author)
Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Dept Chem, Ctr Anal & Synth CAS, POB 124, SE-22100 Lund, Sweden.
Norberg, Mynta (author)
Lund University,Lund Univ, Dept Chem, Ctr Anal & Synth CAS, POB 124, SE-22100 Lund, Sweden.
Andersson, Martin (author)
Uppsala universitet,Uppsala University,Mikrosystemteknik,Uppsala Univ, Ctr Nat Hazards & Disaster Sci CNDS, Dept Engineer Sci, Div Microsyst Technol, Box 534, SE-75121 Uppsala, Sweden.
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Klintberg, Lena (author)
Uppsala universitet,Uppsala University,Mikrosystemteknik,Uppsala Univ, Ctr Nat Hazards & Disaster Sci CNDS, Dept Engineer Sci, Div Microsyst Technol, Box 534, SE-75121 Uppsala, Sweden.
Sandahl, Margareta (author)
Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Dept Chem, Ctr Anal & Synth CAS, POB 124, SE-22100 Lund, Sweden.
Cunico, Larissa P. (author)
Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Dept Chem, Ctr Anal & Synth CAS, POB 124, SE-22100 Lund, Sweden.
Turner, Charlotta (author)
Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Lund Univ, Dept Chem, Ctr Anal & Synth CAS, POB 124, SE-22100 Lund, Sweden.
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 (creator_code:org_t)
Elsevier BV, 2021
2021
English.
In: Journal of Supercritical Fluids. - : Elsevier BV. - 0896-8446 .- 1872-8162. ; 171
Related links:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • CO2-expanded liquids (CXLs) is a class of solvent systems giving relatively low viscosity in comparison to neat organic solvents. The challenge is to achieve a high overall polarity of the CXL, despite the presence of compressed liquid CO2. In this study, the relative static permittivity (εr) was measured for binary and ternary one-phase mixtures of CO2 + green solvent using an in-line microfluidic device. In addition, Kamlet-Taft solvatochromic parameters were experimentally determined, allowing the characterization of the polarizability, acidity, and basicity. Novel data is shown for binary and ternary systems of CO2 expanded ethanol and ethyl lactate, with or without glycerol or water added, at moderate conditions of pressure and temperature (8 MPa and 35 °C). One-phase CXLs systems of a wide relative permittivity range (7.7–75.3) at lowered viscosity were enabled, by mixing different green solvents with CO2.

Subject headings

NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)

Keyword

Binary and ternary solvents
CO-expanded liquids
Green solvent
Kamlet-Taft solvatochromic parameters
Relative static permittivity
CO2-expanded liquids

Publication and Content Type

art (subject category)
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