High-pressure vapor–liquid equilibria of argon+carbon dioxide+2-propanol

Lazzaroni, Michael J.; Bush, David; Eckert, Charles A.; Gläser, Roger

doi:10.1016/j.supflu.2005.10.002

Cited by 10 publications

(8 citation statements)

References 22 publications

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“…The choice of the organic solvent would depend on many obvious factors, such as cost, safety, and ease of removal, but perhaps the overriding consideration would be that the solvent is chemically inert for the chemistry being used in the synthesis. In this regard, in addition to water−THF, we have found similar effects of the CO 2 pressure with other OATS systems, such as water−dioxane and water−acetonitrile . Comprehensive reviews on phase behaviors of organic + water + CO 2 systems are also available, offering a useful database for a wide variety of organic solvents, which makes it possible to tailor solutions for specific separations on demand.…”

Section: Resultssupporting

confidence: 55%

Tunable Solvents for Homogeneous Catalyst Recycle

Lü

Lazzaroni

Hallett

et al. 2004

Ind. Eng. Chem. Res.

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A novel class of tunable solvents facilitates recycle of homogeneous catalysts for both economic and environmental advantages. In a mixed organic-aqueous tunable solvent (OATS), reactions between water-soluble catalysts and moderately hydrophobic substrates can be run homogeneously, with subsequent phase separation for product purification and catalyst reuse. One example demonstrated is the dimethyl ether (DME)-water system, which has been employed as a benign alternative to organic solvents for alcohol dehydrogenase (ADH)-catalyzed reduction of hydrophobic ketones coupled with regeneration of the cofactor NADH. We also show the feasibility of a biphasic DME-water separation scheme to couple with the biocatalytic reaction. The subsequent downstream processing offers the advantages of easily isolating water-insoluble products from the aqueous phase and recycling enzyme-cofactor. Other OATS systems are discussed where the preferential dissolution of modest pressures of CO 2 causes phase separations, which result in very large distribution coefficients of target molecules in the biphasic organicaqueous system, with substantial promise as tunable solvents for biocatalysis.

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Section: Resultssupporting

confidence: 55%

Tunable Solvents for Homogeneous Catalyst Recycle

Lü

Lazzaroni

Hallett

et al. 2004

Ind. Eng. Chem. Res.

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“…The utilization of synthetic methods for determining high-pressure phase behavior and solubility is discussed by various researchers in many scientific texts (Bittrich et al, 1996;Crampon et al, 1999;Borg et al, 2001;Lazzaroni et al, 2004;Tsuji et al, 2004;Lazzaroni et al, 2006;Tenorio et al, 2012;Morère et al, 2013;Nielsen et al, 2015;Kouakou et al, 2016).…”

Section: Synthetic Methodsmentioning

confidence: 99%

Study of Solubility in Supercritical Fluids: Thermodynamic Concepts and Measurement Methods - A Review

Rad

Karimi-Sabet

Varaminian

2019

Braz. J. Chem. Eng.

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Due to the importance of supercritical fluid technology (SFT) in different industries, it has been the subject of intense research in recent decades. Solubility is a key concept in SFT. In fact, obtaining knowledge about the theoretical concepts of solubility and related experimental measurement methods can be useful in developing and improving the quality of research in this field. This study reviews the fundamental knowledge of solubility in supercritical fluids and investigates the significant topics in this field, including high-pressure phase behavior, experimental measurement methods, modeling, and molecular simulation of solubility.

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“…To investigate the feasibility of these processes, vapor−liquid−liquid phase equilibria in mixtures of water + CO 2 + tetrahydrofuran, 1,4-dioxane, or acetonitrile were studied at 25, 40, and 60 °C and pressures ranging from 10 to 57 bar . In each case, the addition of CO 2 caused a major change in the phase boundary, as shown here for the acetonitrile−water system (Figure ).…”

Section: Recycling Of Homogeneous Catalystsmentioning

confidence: 95%

Sustainable Reactions in Tunable Solvents

et al. 2004

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There are now available a variety of tunable solvents; these have been used extensively for extractions and in a variety of materials applications. Our focus has been to apply these techniques to chemical reactions to take advantage of the special properties available, primarily for sustainable technology, to create processes that are potentially more benign and more advantageous. We report here our work in using supercritical fluids, near-critical fluids, and gas-expanded liquids to couple organic reactions with separations. In this paper, we review applications involving improved transport, catalyst recycling, and product separation as well as the in situ generation of catalysts. Although such tunable solvents are in no way a panacea, they do offer the chemical community alternatives that can often be applied creatively to many reaction opportunities.

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High-pressure vapor–liquid equilibria of argon+carbon dioxide+2-propanol

Cited by 10 publications

References 22 publications

Tunable Solvents for Homogeneous Catalyst Recycle

Tunable Solvents for Homogeneous Catalyst Recycle

Study of Solubility in Supercritical Fluids: Thermodynamic Concepts and Measurement Methods - A Review

Sustainable Reactions in Tunable Solvents

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