Carbon Dioxide and Molecular Nitrogen as Switches between Ionic and Uncharged Room-Temperature Liquids Comprised of Amidines and Chiral Amino Alcohols

Tao, Yu; Yamada, Tadao; Gaviola, Gabriel C.; Weiss, Richard G.

doi:10.1021/cm801169c

Cited by 76 publications

(50 citation statements)

References 68 publications

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“…2) [17]. Then, the high-polarity solvent can revert back to its non-ionic form by the removal of CO 2 from solution [18]. The removal of CO 2 is achieved by heating the solution below its boiling point or by sweeping with an inert gas such as nitrogen.…”

Section: Co 2 Binding Organic Liquids (Co 2 Bols)mentioning

confidence: 99%

The Absorption Kinetics of CO2 into Ionic Liquid—CO2 Binding Organic Liquid and Hybrid Solvents

Orhan

Ume²,

Alper

2016

Green Energy and Technology

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Carbon dioxide (CO 2 ) capture is a global concern because of its effect on climate change especially as regards to global warming. Among greenhouse gases, CO 2 is the most abundant with high concentration released from post combustion processes into the atmosphere. For instance, the volume of CO 2 emission from thermal power plants, petroleum refineries, petrochemical plants, hydrogen and cement factories has become one of the top important global concerns nowadays. In order to capture post-combustion CO 2 and securely store it way or to produce useful products from it, it requires separation of CO 2 from flue gas stream. Industrially, it is generally accepted that the most appropriate method that can be applied commercially to capture CO 2 involves absorbing it with a reversible reaction from gas streams into aqueous amine especially monoethanolamine. Although, CO 2 -aqueous amine process is accepted as a mature technology but its absorption/desorption systems are the subject of several studies as the process is energy-intensive among other issues. In view of the shortfalls of CO 2 -aqueous amine systems and the greater societal concern to control the amount of CO 2 released to the environment from industrial sources to abate its effects, research for alternative viable solvent systems becomes of high interest to researchers as well as industrialists. Hence, this chapter is mainly to focus on highlighting and discussing relevant advanced solvent systems for CO 2 capture. Among the novel solvents or technology worthy of discussion here include use of organic solvents consisting of an amidine or a guanidine and a linear alcohol, such as 1-hexanol, instead of aqueous amines. In this case, CO 2 loaded solvent could be regenerated at 90-100°C which is much lower than the boiling point of the solvent and as a result, sufficient drop in energy requirements could be

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Section: Co 2 Binding Organic Liquids (Co 2 Bols)mentioning

confidence: 99%

The Absorption Kinetics of CO2 into Ionic Liquid—CO2 Binding Organic Liquid and Hybrid Solvents

Orhan

Ume²,

Alper

2016

Green Energy and Technology

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“…These were obtained by bubbling CO 2 gas through a 1:1 mixture of an amidine (N 0 -alkyl-N,N-dimethylacetamidine) and an amino acid ester 44 or aminoalcohol 45 (obtained through reduction of an amino acid with lithium aluminum hydride). The synthetic route is shown in Figure 2.…”

Section: Synthesis Of Chiral Ionic Liquids Cils Derived From Amino Acidsmentioning

confidence: 99%

Chiral ionic liquids: A compendium of syntheses and applications (2005–2012)

Payagala¹,

Armstrong²

2011

Chirality

123

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In recent years, the field of chiral ionic liquids (CILs) has undergone exponential growth. As the technology has advanced, new ways of synthesizing stable and structurally diverse ionic liquids have been established. This has led to heretofore unknown applications of CILs as well as in improving efficiency of previously identified applications. In this review article we have compiled a comprehensive database containing structures and physical properties of notable CILs that have been synthesized during the last 6 years. Their applications in the fields of asymmetric organic synthesis, spectroscopy, and chromatography are also illustrated. This is an expansion of our previous review, which covered the literature before 2005.

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“…Then, CO 2 is removed from CO 2 BOLs below the boiling point of the mixture by simple heating or sweeping with an inert gas such as nitrogen. They have tunable physicochemical properties; the solvent reverts back to its less-polar non-ionic form and is ready for future CO 2 uptake (Tao Yu et al 2008). The main advantages of these systems are high CO 2 binding capacities, low heat capacities and lower energy requirement for regeneration as compared to aqueous alkanolamine solutions (Mathias et al 2013).…”

Section: Introductionmentioning

confidence: 99%