Article
Chemistry, Multidisciplinary
Aiyun Hu, Haijun Wang, Jian Ding
Summary: In this study, the alcoholysis of furfuryl alcohol (FA) into ethyl levulinate (EL) using a deep eutectic solvent (DES) composed of choline chloride (ChCl) and ethanol was investigated. Experimental results showed that the addition of 5-sulfonic acid salicylic acid (5-SSA) catalyzed the alcoholysis of FA to produce EL. The presence of ChCl and 5-SSA significantly improved the selectivity for EL. DFT calculations revealed the mechanism of the alcoholysis process.
Article
Biotechnology & Applied Microbiology
Honggang Shi, Shan Li, Jialin Liu, Shushu Wang, Huajin Xu, Yi Hu
Summary: This study developed a green and efficient synthetic process for phytosterol esters using SO3H-functionalized ionic liquids as catalysts in a solvent-free system. The results demonstrated that the catalyst exhibited high catalytic activity and selectivity, and could be reused multiple times while maintaining a high esterification yield.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Xiaocheng Lin, Mantian Li, Zhiwen Chen, Meichen Li, Youjie Huang, Ting Qiu
Summary: PSILs were fabricated by a facile reaction between PEI and PS, showing high catalytic activity and stability for biodiesel production. The one-step fabrication process of PSILs is simpler than traditional ILs, indicating potential advantages.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Yu Qi, Jumei Xu, Zuoxiang Zeng, Weilan Xue, Zhu Zhu
Summary: This study explored the synthesis process and kinetics of the esterification reaction between methanol and sorbic acid catalyzed by deep eutectic solvents (DESs). A green DES composed of choline chloride (ChCl) and p-toluene sulfonic acid monohydrate (PTSA) was successfully prepared. The process was optimized using the response surface methodology, and the effects of various parameters on the conversion of sorbic acid were evaluated. The kinetic data and chemical equilibrium compositions of the reaction were measured using ChCl-1.38PTSA as a catalyst, and the thermodynamic data were calculated. A pseudohomogeneous model based on activity was used to describe the reaction kinetics, and the model showed good fit with the experimental data. The stability and recyclability of ChCl-1.38PTSA were also determined.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Agricultural Engineering
Xiaoqi Lin, Kaisen Jiang, Xuebin Liu, Hongyan Bi, Tianya Li, Dezhi Han, Qinqin Zhang
Summary: A one-pot strategy for the conversion of corn stalk to ethyl levulinate and the extraction of valuable lignin catalyzed by ionic liquids (ILs) was proposed in this work. The optimized catalyst of [C3H6SO3Hmim]HSO4 achieved a favorable ethyl levulinate yield of 24.72% from corn stalk at 200 degrees C for 90 min. The lignin extraction was greatly influenced by the cosolution system, with a high lignin yield of 79.94% achieved in a 75% (v/v) ethanol-water system. This study demonstrated the morphological, thermal, and functional group changes during lignin liquefaction, and the 2D-HSQC analysis confirmed the presence of a stable lignin structure that facilitated its valorization. Overall, this work proposes a feasible biorefinery strategy for the effective conversion and utilization of lignocellulosic biomass.
BIOMASS & BIOENERGY
(2023)
Article
Engineering, Chemical
Junping Xiong, Dejin Zhang, Guoqiang Yang, Zhibing Zhang
Summary: By catalyzing the alkylation of phenol and tert-butyl alcohol with deep eutectic solvents, tert-butyl phenol can be prepared under mild conditions. After optimizing the reaction conditions, a high conversion rate was achieved at 30 degrees Celsius.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Hongfei Ni, Yiwei Zhang, Chuhong Zong, Zhengbo Hou, Hang Song, Yong Chen, Xuesong Liu, Tengfei Xu, Yingjie Luo
Summary: In this study, new tropine-based functionalized acidic ionic liquids (FAILs) were synthesized and demonstrated excellent catalytic performance in the synthesis of aspirin. The ionic liquid [Trps][OTs] exhibited high yield and selectivity, proving its potential as an ideal green solvent for esterification reactions and a suitable substitute for traditional catalysts.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Shuang Li, Shenyi Jiang, Pingbo Zhang, Pingping Jiang, Yan Leng
Summary: Trimethylolpropane acrylate (TMPTA) is an important organic chemistry intermediate, and in this study, a series of 1,3-propanesultone (PS)-functionalized imidazole ionic liquids (ILs) were prepared and evaluated as acid catalysts for its synthesis. The H2SO4-based IL ([IMPSH]HSO4) showed excellent catalytic performance, surpassing that of homogeneous H2SO4, and could be reused multiple times without loss of activity or structure. The esterification reaction catalyzed by [IMPSH]HSO4 demonstrated high efficiency and environmentally benign features, making it suitable for industrial applications.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Jinya Li, Shuya Dong, Beibei An, Zhengkun Zhang, Yuanyuan Li, Li Wang, Jinglai Zhang
Summary: Ionic liquids are effective catalysts for CO2 cycloaddition reactions, but their design lacks guidance due to the diversity of their structures. In this study, we collected a database of 866 samples and established a yield prediction model using machine learning regression algorithms. The random forest model showed better prediction accuracy compared to support vector regression and multilayer perceptron models, especially when the dataset was subdivided into subsets based on substrates and ionic liquids. Our work also provided guidance for establishing reliable machine learning models in chemistry reactions.
Article
Biochemistry & Molecular Biology
Thu Huong Nguyen Thi, Jirina Koutecka, Pavel Kaule, Lubos Vrtoch, Vaclav Sicha, Jan Cermak
Summary: Three types of sulfonic acid group functionalized ionic liquids (SAILs) with different catalytic groups and lipophilicity were synthesized and characterized. The catalytic activities of these SAILs were studied in an esterification reaction, and microwave heating was used. The results showed that the SAIL with a lipophilic alkyl chain had the best performance due to its increased solubility in the reaction mixture. Microwave heating was more effective than conventional heating. Recycling experiments demonstrated that these novel SAILs could be reused without significant loss of catalytic activity.
Article
Chemistry, Physical
Yuhang Bian, Junyang Liu, Senlin Deng, Guoliang Zhang, Zhijian Peng, Chunshan Li
Summary: Developing a catalyst for achieving esterification of methacrylic acid and methanol under mild conditions is crucial. The synthesized PVD-ILs catalyst exhibits high catalytic activity and stable structure, leading to significantly increased conversion rate and good cycling stability.
Article
Agriculture, Multidisciplinary
Pengfei Liu, Jiaojiao Zhang, Yan Qiao, Xianglin Hou, Yu Liu, Yingxiong Wang
Summary: The study demonstrates that the L-proline anion plays a major catalytic role in the reaction process. The highest DOF yield of 33.78% was obtained at 100 degrees Celsius with a molar ratio of [Ch][Pro]/GlcNH(2) of 1. Furthermore, in situ NMR experiments were used to monitor the reaction process and detect the reactive intermediate dihydrofructosazine.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Chemistry, Physical
Elisa Hernandez, Ruben Santiago, Cristian Moya, Pablo Navarro, Jose Palomar
Summary: This study proposes the use of amino acid based ionic liquids as catalysts to promote the conversion of CO2 with propylene oxide to produce propylene carbonate. Experimental results demonstrate that aa-ILs with higher CO2 absorption capacity can catalyze the reaction more effectively.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Applied
Mani Durai, Sakthivel Kumaravel, Arivanandhan Mukannan, Balu Krishnakumar, Sivakumar Thiripuranthagan, Young-Ho Ahn
Summary: The study aims to synthesize ethyl valerate (EV) as a fuel additive by esterifying valeric acid with ethanol using Al-SB and x% PTA/Al-SB catalysts. Among the catalysts, the 30% PTA/Al-SB catalyst exhibited the highest catalytic activity with 96% conversion of valeric acid and 100% selectivity towards ethyl valerate. Additionally, the recyclability of the prepared catalyst was found to be excellent.
JOURNAL OF POROUS MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Nirvik Sen, K. K. Singh, S. Mukhopadhyay, K. T. Shenoy
Summary: In this work, continuous flow synthesis of 1-ethyl-3-methylimidazolium ethyl sulfate ionic liquid in a PTFE micro-capillary was reported. The effects of reaction conditions and micro-capillary diameter on product yield and rate of production were investigated. A computational fluid dynamics (CFD) model was developed to confirm the experimental results and explore the effect of different obstacles on flow.
MICROFLUIDICS AND NANOFLUIDICS
(2023)
Article
Engineering, Chemical
Yexin Hu, Yanru Zhang, Xing Fu, Dianyong Tang, Hui Li, Ping Hu, Liangfang Zhu, Changwei Hu
Summary: The presence of NaCl in water inhibits the degradation of fructose and reduces the formation of unwanted byproducts, but promotes the formation of soluble humins.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Shuai Luo, Yanmei He, Rongzhen Cui, Caixia Fu, Shi-Jian Su, Liang Zhou, Zhiyun Lu, Yan Huang, Yu Liu, Changwei Hu
Summary: Replacing the double-component intermolecular exciplex host with its single-component counterpart not only simplifies the device fabrication process but also improves the electroluminescence performance and thermal stability of FOLEDs.
ORGANIC ELECTRONICS
(2022)
Article
Thermodynamics
Yingdong Zhou, Javier Remon, Jesus Gracia, Zhicheng Jiang, Jose Luis Pinilla, Changwei Hu, Isabel Suelves
Summary: This study explores the use of "sea-thermal" treatment of the microalgae Chlorella Vulgaris to produce energy-dense biofuels and value-added liquid products. The processing conditions and reaction medium were found to significantly affect the yields and properties of the products. Low temperatures and short reaction times favored the formation of biocrude, while high temperatures and prolonged processing times promoted the repolymerization of the biocrude to hydrochar. The salinity of the seawater also played a role in these transformations.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Energy & Fuels
Xiaomei Lei, Hui Xin, Xiangze Du, Huiru Yang, Yan Zeng, Linyuan Zhou, Chao Juan, Hualong Zhang, Dan Li, Changwei Hu
Summary: This study successfully enhanced the hydrodeoxygenation performance of Mo2N catalysts for jatropha oil conversion by synthesizing Ni-Mo2N/gamma-Al2O3 catalyst, resulting in high-quality biofuel.
Article
Engineering, Environmental
Yu-Qin Xiang, Yuan-Hao Wang, Hao Chen, Jie Fu, Qiu-Hong Zhu, Xiao-Lan Yang, Xin-Hong Xu, Song Qin, Ling He, Guo-Hong Tao
Summary: A novel ionic liquid ([N4444]4PTC) was prepared as an efficient adsorbent for iodine capture by combining three effective adsorption sites. The [N4444]4PTC@MF composite was fabricated using MF as a carrier and showed significantly improved iodine adsorption capacity and rate. The composite material exhibited excellent recycling performance and multiple practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Lei Zhang, Shuang-Long Wang, Guo-Hao Zhang, Na Shen, Hao Chen, Guohua Tao, Guo-Hong Tao, Fang Yong, Jie Fu, Qiu-Hon Zhu, Ling He
Summary: In this study, we propose design principles for covalent organic frameworks (COFs) based on intramolecular interactions to precisely control their structures and properties, leading to high-performance uranium sorbents. By investigating the structure-directing effect of intramolecular interactions in hydroxyl-group-functionalized COFs, we demonstrate that modulating these interactions is a viable approach to achieve optimal uranium adsorption performance.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Hao Chen, Guo-Hao Zhang, Qiu-Hong Zhu, Jie Fu, Song Qin, Ling He, Guo-Hong Tao
Summary: In this study, a poly(ionic liquid) (PIL) cohered sandwich structure (PCSS) was proposed to sequester lead in perovskite solar cells. An adhesive and waterproof poly([1-(3-propionic acid)-3-vinylimidazolium]bis(trifluoromethanesulfonyl)imide (PPVI-TFSI) was used to create a transparent protective shield for lead sequestration in the cells. The PCSS showed excellent water resistance and stability against harsh conditions. The PPVI-TFSI exhibited high adsorption capacity for lead, effectively preventing lead leakage in abandoned devices. The PCSS provides a promising solution for lead sequestration and management, contributing to the commercialization of perovskite solar cells.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Qiu-Hong Zhu, Guo-Hao Zhang, Lei Zhang, Shuang-Long Wang, Jie Fu, Yuan-Hao Wang, Lijian Ma, Ling He, Guo-Hong Tao
Summary: Based on the dynamic feature of imine formation, we propose a solvent-responsive strategy for smart switching between an amorphous ionic polyimine membrane and a crystalline organic molecule cage without the addition of other building blocks. The aldehyde and amine components undergo self-correction to form a polymer network or a molecular cage to adapt to solvent environmental constraints. This work builds a bridge between the polymer network and crystalline molecules and offers prospects for smart dynamic materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Jie Fu, Jia-Ying Liu, Guo-Hao Zhang, Qiu-Hong Zhu, Shuang-Long Wang, Song Qin, Ling He, Guo-Hong Tao
Summary: Adsorption, storage, and conversion of gases are the three critical topics in the field of clean energy and environmental mediation. Exploring new methods to prepare high-performance materials to improve gas adsorption is one of the most concerning topics in recent years. In this work, an ionic liquid solution process (ILSP) is explored to greatly improve the adsorption kinetic performance of covalent organic framework (COF) materials for gaseous iodine.
Article
Engineering, Environmental
Shi-Jie Guo, Guo-Hao Zhang, Qiu-Hong Zhu, Chao Yu, Jia-Ying Liu, Xiao-Lan Yang, Song Qin, Nan-Rong Zhao, Ling He, Guo-Hong Tao
Summary: This study presents a series of nitrogen-rich heterocyclic ionic liquids based on 5-aminotetrazolate (ATILs) and fabricates composite materials for efficient capture of radioactive iodine. The materials exhibit high nitrogen content and demonstrate a correlation between nitrogen content and iodine capture performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Jun-Jie Duan, Xin Xin, Shi-Jie Guo, Shuang-Long Wang, Hao Chen, Song Qin, Guo-Hong Tao
Summary: Ionic liquid was used to synthesize UiO-66 and UiO-66-NH2 by ionothermal synthesis. The characterization results showed that UiO-66 synthesized in ionic liquid had high miss linker defects. The properties of UiO-66, such as particle sizes and specific surface area, could be adjusted by the usage of acetic acid modulator. Moreover, the defected UiO-66 exhibited remarkable performance in adsorbing organic dyes.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Materials Science, Multidisciplinary
Jie Fu, Lei Zhang, Jia-Ying Liu, Guo-Hao Zhang, Shuang-Long Wang, Qiu-Hong Zhu, Song Qin, Ling He, Guo-Hong Tao
Summary: This study proposes a coupling strategy of inorganic perovskite crystallization and photoluminescence for detecting lead in the environment. An easy-to-use, low-cost, and portable PVA/C(6)mimBr/CsBr ionogel (PCCI) device is prepared through solution process for on-site detection of Pb(II). The detection limit of PCCI is 236 mg kg(-1), which is close to and lower than the statutory standard of 250 mg kg(-1) in China's agricultural regulations, and is expected to achieve on-site early-warning. This work may promote the development of environmental early-warning devices in line with laws and regulations.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Shuang-Long Wang, Wen-Li Yuan, Ying Zhao, Kun-Lun Cheng, Guo-Hong Tao, Ling He
Summary: A series of green and safe heavy-rare-earth ionic liquids with high-coordinating anions and stable structures were obtained. These liquids exhibited wide liquid phase intervals and excellent thermal stability. The electrostatic properties were investigated to explain the anomalous melting points observed.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Xiangze Du, Lu Peng, Jiajun Hu, Yong Peng, Ana Primo, Dan Li, Josep Albero, Changwei Hu, Hermenegildo Garcia
Summary: This study reports efficient and selective electrocatalysts for CO2 reduction to CO using Cu and Fe nanoparticles supported on a porous N-doped graphitic carbon matrix. The material exhibits high activity and faradaic efficiency at the optimum Fe/Cu ratio of 2.
Article
Chemistry, Applied
Xiangze Du, Rui Zhang, Dan Li, Changwei Hu, Hermenegildo Garcia
Summary: The present energy dilemma has prompted researchers to search for new renewable energy sources with minimal CO2 emissions. Producing biofuels and platform chemicals from sustainable biomass resources is of great significance, but developing high-efficiency catalysts remains a key scientific challenge. Transition metal carbides, particularly molybdenum carbide, have shown promising performance in biomass conversion. Recent developments in preparing molybdenum carbide as a catalyst in biomass to fuel conversion, focusing on preparation methods, structure-dependent effects, and electronic modulation, are summarized in this review. The controllable selective cleavage of C-C, C-O, and C-H bonds over modified molybdenum carbides is highlighted. The review also presents possible deactivation mechanisms of molybdenum carbide, providing systematic and fundamental information for further design and development in biomass conversion.
JOURNAL OF ENERGY CHEMISTRY
(2022)