Can the tricyanomethanide anion improve CO2 absorption by acetate-based ionic liquids?

2017 ◽  
Vol 19 (19) ◽  
pp. 12431-12440 ◽  
Author(s):  
L. F. Lepre ◽  
J. Szala-Bilnik ◽  
L. Pison ◽  
M. Traïkia ◽  
A. A. H. Pádua ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Chemical Reaction ◽  
Gas Absorption ◽  
Co2 Absorption

The chemical reaction of carbon dioxide with 1-alkyl-3-methylimidazolium acetate ionic liquids is not affected by presence of the C(CN)3− anion, which leads to a faster gas absorption and a higher solubility.

scholarly journals New High-Performance Porous Ionic Liquids for Low Pressure CO2 Capture

2020 ◽  
Author(s):  
Jocasta Avila ◽  
Luiz Fernando Lepre ◽  
Catherine Santini ◽  
Martin Tiano ◽  
Sandrine Denis-Quanquin ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Carbon Capture ◽  
High Performance ◽  
Metal Organic Framework ◽  
Low Pressure ◽  
Co2 Absorption ◽  
Rational Combination ◽  
Metal Organic ◽  
New Generation

<div><div><div><p>Porous ionic liquids are non volatile, versatile materials that associate porosity and fluidity. New porous ionic liquids, based on the ZIF-8 metal-organic framework and on phosphonium acetate or levulinate salts, were prepared and show an increased capacity to absorb carbon dioxide at low pressures. Porous suspensions based on phosphonium levulinate ionic liquid absorb reversibly 103% more carbon dioxide per mass than pure ZIF-8 per mass at 1bar and 303K. We show how the rational combination of MOFs with ionic liquids can greatly enhance low pressure CO2 absorption, paving the way toward a new generation of high-performance, readily available liquid materials for effective low pressure carbon capture.</p></div></div></div>

scholarly journals Novel Materials Synthesized from Red Mud, Bagasse, and Bentonite for Gas Treatment by CO2 Absorption

2018 ◽  
Vol 207 ◽  
pp. 03005 ◽  
Author(s):  
Nguyen Hoc Thang ◽  
Nguyen Hoang Luong Ngoc ◽  
Vo Thi Nha Uyen ◽  
Pham Trung Kien
Keyword(s):  
Carbon Dioxide ◽  
Red Mud ◽  
Gas Absorption ◽  
Industrial Wastes ◽  
Heating Process ◽  
Co2 Absorption ◽  
The Novel ◽  
Carbon Dioxide Absorption ◽  
Pressing Method ◽  
Gas Treatment

Carbon dioxide (CO2) is a gas which causes both impact to atmosphere (one of greenhouse gases) and decrease heating value of gaseous fuel (such as natural gas, biogas, landfill and sewage gas). Hence, there are many investigations to find solutions for gas treatment and carbon dioxide absorption from researchers. Catalyst or synthesized materials is to optimize processes of CO2 treatment and absorption to obtain the best benefit for factories and community. This study utilized industrial wastes of red mud and bagasse in combination with bentonite to synthesis the novel material (absorbent) responding requirements for the process of gas treatment. More specially, raw materials are impacting negatively on the environment. In which, red mud is solid waste of Bayer process from bauxite mining which is being the hard problem to have solutions for its management and utilization and bagasse is industrial waste of sugar factories. Wet pressing method was applied to form the absorbent samples by mixing red mud, bagasse, bentonite, and water in mixtures. The samples were put in furnace for heating process at 300°C for 2 hours. The final samples were characterized for microstructure using X-ray diffraction (XRD) and fourier transform infrared spectroscopy (FTIR). And then the absorbents were tested for gas absorption capacity of carbon dioxide. The results showed a potential application of the novel absorbent materials for gas treatment.

scholarly journals Searching for Solvents with an Increased Carbon Dioxide Solubility Using Multivariate Statistics

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1156 ◽  
Author(s):  
Marta Bystrzanowska ◽  
Marek Tobiszewski ◽  
Francisco Pena-Pereira ◽  
Vasil Simeonov
Keyword(s):  
Carbon Dioxide ◽  
Principal Component Analysis ◽  
Cluster Analysis ◽  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Hierarchical Clustering ◽  
Co2 Capture ◽  
Principal Component ◽  
Gas Absorption ◽  
Molecular Solvents

Ionic liquids (ILs) are used in various fields of chemistry. One of them is CO2 capture, a process that is quite well described. The solubility of CO2 in ILs can be used as a model to investigate gas absorption processes. The aim is to find the relationships between the solubility of CO2 and other variables—physicochemical properties and parameters related to greenness. In this study, 12 variables are used to describe a dataset consisting of 26 ILs and 16 molecular solvents. We used a cluster analysis, a principal component analysis, and a K-means hierarchical clustering to find the patterns in the dataset and the discriminators between the clusters of compounds. The results showed that ILs and molecular solvents form two well-separated groups, and the variables were well separated into greenness-related and physicochemical properties. Such patterns suggest that the modeling of greenness properties and of the solubility of CO2 on physicochemical properties can be difficult.

Enhanced Absorption of Carbon Dioxide Gas by Methanol Based Nanofluids in a Taylor-Couette Absorber

2013 ◽  
Author(s):  
Israel Torres Pineda ◽  
Yong Tae Kang
Keyword(s):  
Carbon Dioxide ◽  
Mass Transfer ◽  
Mass Flow ◽  
High Speed ◽  
Absorption Rate ◽  
Gas Absorption ◽  
Co2 Absorption ◽  
Co2 Gas ◽  
Enhanced Absorption ◽  
Taylor Couette

Mass transfer enhancement by the use of nanoparticles suspended in a liquid phase (known as nanofluids) has been studied in recent years with positive results. Different theories have been proposed to explain the improvement in mass transfer, however it has not been possible to elucidate a definite answer. While the theory is still uncertain the experimental work continues in areas that will benefit much such as non-reactive gas absorption. In this study carbon dioxide (CO2) absorption experiments are performed in a Taylor-Couette absorber at different rotational speeds. The base fluid for the experiments is methanol. Al2O3 and SiO2 nanoparticles are combined with methanol to produce nanofluids with the purpose of enhancing the absorption of the CO2 gas into the methanol. The system is equipped with a mass flow controller at the inlet and a mass flow meter at the outlet to obtain the absorption rate. The Taylor-Couette absorber performance is compared to a modified version in which trays were added to enhance the absorption rate. Experiments in co-current and counter-current flow modes are carried out. The results of continuous absorption are presented. In addition, the two-phase flow pattern of the CO2 gas bubbles and the liquid methanol in the Taylor-Couette absorber and the modified version is analyzed with pictures obtained by a high speed camera.

scholarly journals New High-Performance Porous Ionic Liquids for Low Pressure CO2 Capture

2020 ◽  
Author(s):  
Jocasta Avila ◽  
Luiz Fernando Lepre ◽  
Catherine Santini ◽  
Martin Tiano ◽  
Sandrine Denis-Quanquin ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Ionic Liquids ◽  
Carbon Capture ◽  
High Performance ◽  
Metal Organic Framework ◽  
Low Pressure ◽  
Co2 Absorption ◽  
Rational Combination ◽  
Metal Organic ◽  
New Generation

<div><div><div><p>Porous ionic liquids are non volatile, versatile materials that associate porosity and fluidity. New porous ionic liquids, based on the ZIF-8 metal-organic framework and on phosphonium acetate or levulinate salts, were prepared and show an increased capacity to absorb carbon dioxide at low pressures. Porous suspensions based on phosphonium levulinate ionic liquid absorb reversibly 103% more carbon dioxide per mass than pure ZIF-8 per mass at 1bar and 303K. We show how the rational combination of MOFs with ionic liquids can greatly enhance low pressure CO2 absorption, paving the way toward a new generation of high-performance, readily available liquid materials for effective low pressure carbon capture.</p></div></div></div>

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