Article
Chemistry, Physical
Fang Liu, Yuhang Hu, Jingsheng Zhou, Zhengkun Zhang, Zhiyong Zhu, Jinglai Zhang, Li Wang
Summary: Novel ionic liquids with the ability to adsorb CO2 were synthesized and demonstrated efficient catalytic ability for the conversion of CO2 into cyclic carbonates without the need for co-catalysts or solvents. The reusability of the catalyst was also established, presenting a new pathway for exploring the potential of ionic liquids in chemical fixation of CO2.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Green & Sustainable Science & Technology
Mariusz Zalewski, Tomasz Krawczyk, Agnieszka Siewniak, Aleksander Sobolewski
Summary: This study investigates the potential of ionic liquid mixtures as CO2 absorbents, finding that the addition of water greatly reduces the viscosity of the systems. Some CO2-rich solutions display non-Newtonian behavior, and the mechanism of CO2 absorption in imidazolium ionic liquids with DBU was confirmed through C-13 NMR.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Nanoscience & Nanotechnology
Meilin Yin, Lipeng Wang, Shaokun Tang
Summary: The integration of NH2-IL onto channel walls of mesoporous covalent organic framework materials results in higher CO2 capture activity and improved cycloaddition reaction rate. The [AeImBr]X%-TAPT-COFs possess excellent stability and cycle life.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Biochemistry & Molecular Biology
Fatin Nor Arissa Azhar, Mohd Faisal Taha, Siti Musliha Mat Ghani, Muhammad Syafiq Hazwan Ruslan, Noor Mona Md Yunus
Summary: This study investigated the solubility of carbon dioxide in MEA-BMIM hybrid solvents and used response surface methodology to design and analyze the experiments. The results showed that the addition of BMIM in the aqueous solution can enhance the solubility of CO2, and the optimum conditions for CO2 absorption in 30 wt% MEA-BMIM solution were identified.
Article
Biochemistry & Molecular Biology
Qianqian Yan, Hao Liang, Shenglin Wang, Hui Hu, Xiaofang Su, Songtao Xiao, Huanjun Xu, Xuechao Jing, Fei Lu, Yanan Gao
Summary: Transforming CO2 into value-added chemicals is an important topic in recent years. This study developed a layered two-dimensional COF, IM4F-Py-COF, which exhibited excellent catalytic activity for the chemical fixation of CO2 with epoxides. The COF catalyst had a high porosity, a one-dimensional open-channel structure, and the integration of an ionic liquid precursor, contributing to its superior catalytic performance. The COF catalyst also demonstrated good recyclability.
Article
Chemistry, Physical
Lanyun Wang, Lingshuang Li, Yongliang Xu, Yao Li, Yan Wang, Tingxiang Chu
Summary: This study prepared various hybrid absorbents by mixing several alkali metal salts with [Bmim][BF4] or [Bmim][Ac] to absorb CO2. The hybrid absorbents based on [Bmim][BF4] showed enhanced absorption effect on CO2, while the hybrid absorbent based on [Bmim][Ac] had an inhibitory effect.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Environmental
Leizhi Zheng, Guoqiang Yang, Jia Liu, Xingbang Hu, Zhibing Zhang
Summary: This study introduces an effective method for synthesizing various carbamates from amines, alcohol, and CO2, proposing two pathways to achieve this process and allowing for the easy recovery and reuse of DBU.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Karim S. Al-Barghouti, Aaron M. Scurto
Summary: In this study, the thermal conductivity of an ionic liquid was measured at different temperatures and pressures using a transient hot-wire technique. The results showed that the thermal conductivity initially decreased and then gradually increased, mainly due to the effects of hydrostatic pressure. These findings have implications for engineering design and applications.
Article
Chemistry, Multidisciplinary
Sibel Oguzlar, Merve Zeyrek Ongun, Aylin M. Deliormanli
Summary: This study investigates the use of bioactive glass particles containing γ-Fe2O3@ZnO to enhance the CO2 sensitivity of the HPTS dye. The results show that the addition of nanoparticles improves the performance of the sensor, including the linear response range, signal variation, and sensitivity. The HPTS-based thin film sensor with 20M@ZnO-BG NPs exhibits a promising CO2 detection capability, making it applicable in various fields such as environmental monitoring, medical diagnostics, and industrial processes.
Article
Chemistry, Physical
Xinrui Zhu, Jingshun Zhang, Zhengkun Zhang, Fang Liu, Yuhang Hu, Yi Liu, Tiegang Ren, Li Wang, Jinglai Zhang
Summary: Amino-specified pyrazolium ionic liquid (APEPzBr) is synthesized by two steps, and it is found that the product of the first step can also catalyze the coupling reaction of CO2 and epoxides. The ability is attributed to the strong absorption of CO2 and robust electrophilic activation of the product, as confirmed by density functional theory and C-13 NMR measurement, with further elucidation of the difference between the product and APEPzBr using ELF and AIM analysis.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Applied
Tiantian Tang, Shurui Cao, Cunxian Xi, Zhiqiong Chen
Summary: A magnetically and recyclable multifunctional nanohybrid adsorbent was prepared by incorporating chitosan, graphene oxide, and ionic liquid, which showed enhanced adsorption capacity for alkaloids. The adsorbent could be potentially used for extracting illicit additives in food samples.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Applied
Andrey Z. Sheshkovas, Janna V. Veselovskaya, Vladimir A. Rogov, Denis Kozlov
Summary: Composite CO2 sorbents were obtained by impregnating an amino acid ionic liquid into mesoporous silica gel. At lower loadings, the sorption is fast and the capacity is proportional to the mass content of the ionic liquid. At higher loadings, the sorption rate decreases due to hindered mass transfer. An increase in CO2 concentration leads to faster sorption and higher capacity. Physical adsorption/absorption processes contribute more to total sorption capacity at higher CO2 concentrations.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Chemical
Francesco Galiano, Raffaella Mancuso, Lorenzo Guazzelli, Michele Mauri, Cinzia Chiappe, Roberto Simonutti, Adele Brunetti, Christian S. Pomelli, Giuseppe Barbieri, Bartolo Gabriele, Alberto Figoli
Summary: This study developed novel polymeric membranes based on polymerized ionic liquids for CO2 separation, which showed a preference towards CO2 permeation in wet conditions and some membranes exceeded the Robeson upper bound for the CO2/H2 gas pair.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Qianmeng Zhao, Jian Chen, Mengqian Fu, Lili Deng, Yunong Li, Qian Su, Weiguo Cheng
Summary: This study developed a new strategy to enhance the catalytic activity of PILs by regulating their structure. A gradient structure with enriched ionic liquids on the surface was formed by shortening the alkyl chain length of the IL monomer, allowing for better utilization of the active sites. The PIL with a 4-carbon alkyl chain exhibited the best catalytic activity, and further analysis revealed that the release of Br- enhanced the catalytic activity.
APPLIED MATERIALS TODAY
(2023)
Article
Chemistry, Physical
Yunlong Yang, Yuanlong Guo, Chengtao Gao, Michael North, Jili Yuan, Haibo Xie, Qiang Zheng
Summary: Cellulosic poly(ionic liquid)s ([Cellmim][Br]) were successfully synthesized via the transesterification reaction of cellulose with 1-(2-methoxyacetyl)-3-methyl imidazole bromide IL ([Mmim][Br]). The resulting POF-[Cellmim][Br] materials functioned as efficient catalysts for cycloaddition reactions of epoxides and carbon dioxide. The work provided insights into the cooperative effects of porous properties and nucleophilic anions on the reaction.
ACS APPLIED ENERGY MATERIALS
(2023)