Substitution of Solvents by Safer Products

doi:10.1016/b978-1-927885-41-3.50010-3

Cited by 9 publications

(7 citation statements)

References 559 publications

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“…[30][31][32] This means an easy capability in the liquid structure to form vacancies, which could represent an advantage in CO2 capture process. Also the value of Eσ is quite small compared to other fluids, [28] and this is related to an easy diffusion of charged species in the fluids. The good adherence of experimental data of σ and η vs. temperature with an exponential trend allows the use of the Walden rule as a qualitative tool to obtain structural information on our system.…”

Section: Resultsmentioning

confidence: 88%

“…The observed conductivity values are higher than typical values of DESs, supporting the presence of ionic species with a good mobility. [28,29] Plotting the logarithm of both viscosity and conductivity against the inverse of the temperature (Figure 1), the corresponding activation energies, Eη and Eσ respectively, can be estimated. They result to be Eη = 0.62 and Eσ = 0.38 kJ/mol.…”

Section: Resultsmentioning

confidence: 99%

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Low-Cost Temperature Transition Mixtures (TTM) Based on Ethylene Glycol/potassium Hydroxide as Reversible CO2 Sorbents

Costamagna¹,

Micheli²,

Canale³

et al. 2021

Preprint

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A low-cost Transition Temperature Mixture (TTM) has been synthesized by mixing ethylene glycol and potassium hydroxide as a new non-aqueous CO2 sorbent. Boric acid has been added to ensure the reversibility of the system and a small amount of water to modulate the viscosity and optimize the performances. The resulting mixtures have been characterized in terms of viscosity, conductivity and density over temperature (therefore ionicity via Walden plots) and the effect of temperature, pressure and the kinetics of the absorption have been evaluated. Under optimized conditions, the four-component mixture EG/KOH/BA/H2O 3:1:1:3 can absorb 24 gCO2/kgsorbent in 30 minutes at 35°C at 1 atm (59 after 4 h) and 60 gCO2/kgsorbent in 30 minutes at high pressure (10 and 20 atm, 80 gCO2/kgsorbent after 50 min), while the desorption is quantitative after 30 minutes at only 60°C under a gentle N2 flow. The system is robust enough to ensure multiple absorption/desorption cycles.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Low-Cost Temperature Transition Mixtures (TTM) Based on Ethylene Glycol/potassium Hydroxide as Reversible CO2 Sorbents

Costamagna¹,

Micheli²,

Canale³

et al. 2021

Preprint

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show abstract

“…Unlike many other catalytic reactions, the majority of carbonylation chemistry is homogeneous because homogeneous catalysts provide higher rate, selectivity, higher activity, the ability to carry out the reaction at milder temperatures, ease of spectroscopic monitoring as well as controlled & customizable reaction site than the heterogeneous system. [11] Carbonylation reactions of diazo-alkane, iodo-alkane, and enol-triflates allene, both terminal and internal alkynes & their derivatives, and 1hydroxy-o-carborane into their valuable products like a carboxylic acid derivative or heterocyclic product have documented here.…”

Section: Catalytic Carbonylation Via Homogeneous Catalytic Routementioning

confidence: 91%

A Review of Synthetic Application of Homogeneous, Heterogenised‐Homogeneous, and Microwave‐Assisted Catalytic Carbonylation of Selected Substrates

Pant,

Prakash,

Dhami

2024

ChemistrySelect

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Catalytic carbonylation has gained a lot of interest over the past 20 years. It produced various pharmaceuticals, agrochemicals, and intermediates that can made through this process. The carbonylation process is the most straightforward method to insert CO into any organic substrate using a simple carbonyl source, i. e., CO gas. Apart from gaseous CO, many techniques have devised for producing CO in situ using surrogates such as HCOOH, DMF, Formic acid, Phenyl Formate, Oxalic acid, and Chloroform. Several carbonylation methods, such as aminocarbonylation, alkoxycarbonylation, double carbonylation, and oxidative carbonylation, provide viable and appealing substitutes for conventional synthetic methods on a commercial or laboratory scale. Many recent studies focus on catalyst‐product separation, catalyst recoverability, and reusability in these reactions. Therefore, advancements in using different approaches, such as supported liquid phase catalysis and biphasic catalysis, to anchor homogeneous catalysts are becoming increasingly important. These carbonylation methods are easy to use, cost‐effective, and do not require ligands. They also produce excellent yields of the products necessary. Using phosphine ligands has drawbacks, including high work‐up costs, laborious work‐up techniques, and sensitivity to air and moisture. Several phosphine‐free carbonylation pathways offer affordable and straightforward ways to accomplish these changes without phosphine ligands. This review summarizes the synthetic application of homogeneous and immobilized catalysts in producing carboxylic acid derivatives and heterocycles that have medicinal properties.

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“…Examples of common HBAs and HBDs can be found in Figure 3. Deep eutectic solvents (DESs) are prepared through the formation of hydrogen bonds between their constituents, resulting in a eutectic mixture that remains liquid within the temperature range of room temperature to 70 °C [78]. While DESs share some similarities with ionic liquids (ILs), they are distinct in that DESs are not exclusively composed of ionic species and can be derived from nonionic components [78].…”

Section: Deep Eutectic Solvents (Dess)mentioning

confidence: 99%

Adsorptive Membranes Incorporating Ionic Liquids (ILs), Deep Eutectic Solvents (DESs) or Graphene Oxide (GO) for Metal Salts Extraction from Aqueous Feed

Qalyoubi,

Zuburtikudis,

Abu Khalifeh

et al. 2023

Membranes

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Water scarcity is a significant concern, particularly in arid regions, due to the rapid growth in population, industrialization, and climate change. Seawater desalination has emerged as a conventional and reliable solution for obtaining potable water. However, conventional membrane-based seawater desalination has drawbacks, such as high energy consumption resulting from a high-pressure requirement, as well as operational challenges like membrane fouling and high costs. To overcome these limitations, it is crucial to enhance the performance of membranes by increasing their efficiency, selectivity, and reducing energy consumption and footprint. Adsorptive membranes, which integrate adsorption and membrane technologies, offer a promising approach to address the drawbacks of standalone membranes. By incorporating specific materials into the membrane matrix, composite membranes have demonstrated improved permeability, selectivity, and reduced pressure requirements, all while maintaining effective pollutant rejection. Researchers have explored different adsorbents, including emerging materials such as ionic liquids (ILs), deep eutectic solvents (DESs), and graphene oxide (GO), for embedding into membranes and utilizing them in various applications. This paper aims to discuss the existing challenges in the desalination process and focus on how these materials can help overcome these challenges. It will also provide a comprehensive review of studies that have reported the successful incorporation of ILs, DESs, and GO into membranes to fabricate adsorptive membranes for desalination. Additionally, the paper will highlight both the current and anticipated challenges in this field, as well as present prospects, and provide recommendations for further advancements.

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Substitution of Solvents by Safer Products

Cited by 9 publications

References 559 publications

Low-Cost Temperature Transition Mixtures (TTM) Based on Ethylene Glycol/potassium Hydroxide as Reversible CO2 Sorbents

Low-Cost Temperature Transition Mixtures (TTM) Based on Ethylene Glycol/potassium Hydroxide as Reversible CO2 Sorbents

A Review of Synthetic Application of Homogeneous, Heterogenised‐Homogeneous, and Microwave‐Assisted Catalytic Carbonylation of Selected Substrates

Adsorptive Membranes Incorporating Ionic Liquids (ILs), Deep Eutectic Solvents (DESs) or Graphene Oxide (GO) for Metal Salts Extraction from Aqueous Feed

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