Article
Polymer Science
Junmeng Zhao, Wenjiao Ge, Jianbo Shuai, Xiangli Gao, Fengshan Zhang, Xiaohui Wang
Summary: Cellulose is a promising feedstock for sustainable materials, and efficient cellulose solvents are essential for its full utilization. Ten superbase amino acid ionic liquids (SAAILs) were synthesized in this study and their properties varied with their cation and anion structures. The ability of the SAAILs to dissolve cellulose is related to their Kamlet-Taft parameters, especially hydrogen bond basicity (beta). Four SAAILs composed of specific cations and anions were identified as promising solvents for preparing regenerated cellulose films (RCFs) with high tensile strength, high Young's modulus, good transparency, and a smooth surface morphology. These halogen- and metal-free SAAILs offer a new avenue for cellulose processing.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Materials Science, Paper & Wood
Sherif Elsayed, Michael Hummel, Daisuke Sawada, Chamseddine Guizani, Marja Rissanen, Herbert Sixta
Summary: Lyocell fibers have gained attention for their sustainability and excellent mechanical properties, produced using dry-jet wet spinning process. NMMO and superbase-based ILs are commonly used solvents, offering high-quality regenerated cellulose fibers.
Article
Engineering, Chemical
Ping Liu, Kaixing Cai, Mao Liu, Fei Liu, Peng Chen, Tianxiang Zhao
Summary: We demonstrate an effective strategy for the capture and conversion of H2S in novel superbase protic ionic liquids. The synthesized superbase protic ionic liquids show unprecedented H2S uptake via chemical absorption and the activated H2S can be further converted into high value-added thiols in situ. This SPIL-mediated scheme provides an alternative approach for the capture and chemical conversion of H2S.
Article
Chemistry, Physical
Hizb Ullah Sajid, Ravi Kiran
Summary: The wetting behavior of steel surfaces can be improved by treating them with different types and concentrations of RTILs, making them more wettable by water and non-polar liquids. The water contact angle decreases with time elapsed, while the contact angle for non-polar liquids remains relatively unchanged within a specific time frame. The surface free energy of RTIL-treated steel surfaces increases, making them more prone to wetting by liquids.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Liqi Qiu, Yuqing Fu, Zhenzhen Yang, Anna C. Johnson, Chi-Linh Do-Thanh, Bishnu P. Thapaliya, Shannon M. Mahurin, Liang-Nian He, De-en Jiang, Sheng Dai
Summary: In this study, pyrazolonate-derived SILs with anti-oxidation properties were developed by introducing aza-fused rings in the oxygenate-derived anions. These SILs showed promising and tunable CO2 uptake capacity surpassing the phenolate-based SIL through a carbonate formation pathway, as confirmed by spectroscopy studies.
Article
Engineering, Environmental
Wenqiu Zheng, Xin Li, Xiaoyu Wang, Shri Ramaswamy, Feng Xu
Summary: This study focused on the recycling of superbase-derived ionic liquids (SILs) for regenerated cellulose (RC) processing. Two novel SILs were recovered from the cellulose regeneration process and compared with a traditional SIL. The properties and stability of the recycled SILs were analyzed, and it was found that one of the novel SILs showed the highest recycle times and better properties, making it a promising solvent for scaling up cellulose processing.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Nan Wang, Chunyan Ma, Hang Yu, Xiaoyan Ji
Summary: This study investigated the CO2 absorption capacity of superbase derived ionic liquid [HDBU][IM] mixed with different cosolvents, and found that [HDBU][IM]-DEPG with a 2:1 mass ratio at 298.15 K exhibited optimal performance. The research also analyzed gas solubilities, thermodynamic modeling, and the contributions of chemisorption and physical absorption, indicating the potential of [HDBU][IM]-DEPG for CO2 separation in real industrial applications.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Nanoscience & Nanotechnology
Jianpeng Feng, Kangjie Zhou, Changsha Liu, Qi Hu, Hui Fang, Hengpan Yang, Chuanxin He
Summary: In this study, a free-standing electrocatalyst was constructed by confining a superbase and hydrophobic ionic liquid into Ni foam pores. This strategy successfully suppresses the hydrogen evolution reaction and improves the efficiency of CO2 reduction. The high CO2 capacity and modulation effect of the ionic liquid also play a positive role in the reaction.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Diana C. M. Ribeiro, Rafael C. Rebelo, Francesco De Bon, Jorge F. J. Coelho, Armenio C. Serra
Summary: In this study, transparent films were produced by solubilizing industrial cellulose pulp in ionic liquids and regenerating it. The films exhibited good elongation properties and were characterized using various analytical techniques. The potential of this methodology for preparing new biobased films was demonstrated through mechanical property evaluations.
Article
Engineering, Chemical
David Outeirino, Ivan Costa-Trigo, Ana Rodriguez, Nelson Perez Guerra, Jose Manuel Dominguez
Summary: The biocompatible ionic liquid cholinium glycinate has been shown to effectively delignify waste vegetable materials. By using a water: acetone mixture to precipitate carbohydrates, high levels of delignification can be achieved while recovering the ionic liquid at a high purity for reuse. This strategy allows for successful repeated cycles of application and has been proven suitable for competitive sequential delignification processes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yang Wang, Huan Wang, Lan Chen, Weitao Wang, Zhaohui Yang, Zhimin Xue, Tiancheng Mu
Summary: A solvent system combining ionic liquids, ethanolamine, and organic superbases was designed for efficient and rapid dissolution of lignocellulose under mild conditions.
Article
Chemistry, Multidisciplinary
Adam J. Greer, S. F. Rebecca Taylor, Helen Daly, Johan Jacquemin, Christopher Hardacre
Summary: A study investigated a dual-IL system for the selective capture and separation of CO2 and SO2. Results showed that [P66614][Tetz] efficiently captured SO2 and protected [P-66614][Benzim] from acidic contaminants, thereby extending its CO2 uptake capacity.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Engineering, Environmental
Antai Zhu, Jun Huang, Haibo Xie, Wang Yue, Shangdong Qin, Fazhi Zhang, Qinqin Xu
Summary: In this study, a new and facile all-in-one strategy was developed to engineer cellulose into flexible cellulosic poly(protic ionic liquids)/PVA-based composite organic ionogel electrolyte (CPOIE). The CPOIEs exhibit excellent mechanical properties and superior electrochemical properties.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Adam J. Greer, S. F. Rebecca Taylor, Helen Daly, Matthew G. Quesne, Nora H. de Leeuw, C. Richard A. Catlow, Johan Jacquemin, Christopher Hardacre
Summary: The presence of NO2 impurities in the waste gas stream significantly reduces the IL's ability to absorb CO2 efficiently, hindering its performance after multiple absorption-desorption cycles. This study contributes to understanding the effects of different flue gas components on CO2 capture sorbents, with a particular focus on the impact of NO2 contaminants that have received limited attention in previous research.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Jiming Yang, Xingmei Lu, Qing Zhou, Junli Xu, Jiayu Xin, Suojiang Zhang
Summary: This paper proposes a method of pretreating biomass using low-viscosity ionic liquids and L-arginine, which can increase the treatment capacity of biomass and maintain high lignin removal rate and cellulose yield. The ionic liquid can be reused through vacuum filtration without using antisolvents.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)