AI Article Synopsis
- Sub/supercritical fluid chromatography is a greener technique using carbon dioxide, with organic co-solvents like dimethyl carbonate enhancing its effectiveness for separation.
- A study tested dimethyl carbonate as a co-solvent for separating novel psychoactive substances, finding it effective, especially with basic or mixed additives, outperforming traditional co-solvents like methanol.
- Using sustainable co-solvents like dimethyl carbonate reduces the environmental impact of analytical processes, promoting greener chemistry practices.
Article Abstract
Background: Sub/supercritical fluid chromatography is regarded as a greener separation technique due to the use of carbon dioxide as the main component of the mobile phase compared to conventional liquid chromatography techniques. Organic co-solvents are usually added to carbon dioxide to increase elution strength of the mobile phase. Therefore, it is of great importance to test applicability of green co-solvents in separation methods and to include them among commonly used mobile phase components.
Results: A comprehensive study of the suitability of green solvent dimethyl carbonate as a co-solvent for enantioseparation in sub/supercritical fluid chromatography was conducted with a set of novel psychoactive substances from various groups. The experiments were performed on polysaccharide-based columns. For successful enantioseparation of these compounds, the presence of basic or mixed mobile phase additives was essential. The obtained results clearly show that dimethyl carbonate is a suitable co-solvent for enantioseparation on polysaccharide-based columns in sub/supercritical fluid chromatography and in some cases surpasses commonly used co-solvents as methanol and propan-2-ol.
Significance: The use of more sustainable co-solvents, such as dimethyl carbonate, instead of conventional ones to carbon dioxide presents a greener approach to analytical applications and reduces the overall environmental impact of analytical processes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.aca.2024.343380 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Quantification of vehicular uncorrelated Li-solvent transport in highly concentrated electrolytes solvent-related Onsager coefficients.
Phys Chem Chem Phys
December 2024
Department of Chemistry and Center for Materials Science (WZMW), University of Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany.
Highly concentrated salt solutions are promising electrolytes for battery applications due to their low flammability, their high thermal stability, and their good compatibility with electrode materials. Understanding transport processes in highly concentrated electrolytes is a challenging task, since strong ion-ion and ion-solvent interactions lead to highly correlated movements on the microscopic scale. Here, we use an experimental overdetermination method to obtain accurate Onsager transport coefficients for concentrated binary electrolytes composed of either sulfolane (SL) or dimethyl carbonate (DMC) as solvent and either LiTFSI or LiFSI as salt.
View Article and Find Full Text PDFEffects of Cosolvent and Nonsolvating Solvent on the Structural Dynamics of Organic Electrolytes in Sodium-Ion Batteries.
ACS Appl Mater Interfaces
December 2024
Beijing National Laboratory for Molecular Sciences, Molecular Reaction Dynamics Laboratory, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
In sodium-ion batteries (SIBs), the performance of a single solvent often does not meet actual requirements and a cosolvent or nonsolvating solvent is needed. However, the effect of these electrolyte additives on the solvation structure and dynamics of Na in SIBs is yet to be fully understood. Herein, electrolyte structural dynamics are examined for NaPF in dimethyl carbonate (DMC) with 1,1,2,2-tetrafluoro-2,2,2-trifluoroethoxy ethane (HFE) as the nonsolvating solvent or propylene carbonate (PC) as the cosolvent using steady-state and time-resolved infrared (IR) spectroscopies.
View Article and Find Full Text PDFCeria-Catalysed Production of Dimethyl Carbonate from Methanol and CO: Effect of Using a Dehydrating Agent Combined with a Solid Cocatalyst.
Molecules
November 2024
Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France.
The direct synthesis of dimethyl carbonate (DMC) from CO and methanol over ceria-based catalysts, in the presence of a dehydrating agent shifting the thermodynamical equilibrium of the reaction, has received significant interest recently. In this work, several dehydrating agents, such as molecular sieves, 2,2-dimethoxypropane (DMP), dimethoxymethane (DMM) and 1,1,1-trimethoxymethane (TMM), are combined with commercial ceria to compare their influence on the DMC yield obtained under the same set of operating conditions. TMM is found to be the most efficient; however, its conversion is not complete even after 48 h of reaction.
View Article and Find Full Text PDFCyrene-Enabled Green Electrospinning of Nanofibrous Graphene-Based Membranes for Water Desalination via Membrane Distillation.
ACS Sustain Chem Eng
December 2024
Department of Chemical Engineering, Faculty of Engineering and Design, University of Bath, Bath BA2 7AY, U.K.
High-performance and sustainable membranes for water desalination applications are crucial to address the growing global demand for clean water. Concurrently, electrospinning has emerged as a versatile manufacturing method for fabricating nanofibrous membranes for membrane distillation. However, widespread adoption of electrospinning for processing water-insoluble polymers, such as fluoropolymers, is hindered by the reliance on hazardous organic solvents during production.
View Article and Find Full Text PDFStructures of hexamethyl-[1,1'-biphenyl]-4,4'-diammonium salts.
Acta Crystallogr B Struct Sci Cryst Eng Mater
December 2024
South Ural State University, Lenin prospekt 76, Chelyabinsk, 454080, Russian Federation.
The crystal structures of nine hexamethyl-[1,1'-biphenyl]-4,4'-diammonium (HMB) salts are described: the iodide (2), triiodide (3), succinate (4), fumarate (5), tetravanadate (6), hydroterephthalate (7) and perylenetetracarboxylate (8), as well as pentamethyl-[1,1'-biphenyl]-4,4'-diammonium iodide (1) and the metal-organic framework sodium diacetylenedisalicylate-HMB (9). HMB carbonate (10) has been synthesized as an important intermediate for a promising anti-metal-organic framework (`anti-MOF'). All the described compounds are characterized by high solubility in water.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!