Article
Engineering, Chemical
Meng Shi, Kelei Huang, Ruining He, Yinghua Jiang, Yun Zou, Jing Xu, Zhangfa Tong
Summary: The study found that the Bronsted acidic ionic liquid [HSO3-PMPY][CF3SO3] exhibited good catalytic activity and reusability in the production of isobutyl acetate. The NIH-M kinetic model established in this study showed satisfactory prediction of the esterification reaction kinetics and was validated under various conditions.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Yichun Dong, Qingchun Yang, Zhiwei Li, Zhigang Lei
Summary: The suitable ionic liquid was selected using the COSMO-RS model, and the experimental vapor pressure data of IL-containing systems were measured. Results showed that [EMIM][BF4] was effective in separating benzene and acetonitrile.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Chemistry, Physical
Daniele Polidoro, Alina M. Balu, Maurizio Selva, Rafael Luque, Sameh M. Osman, Tripti Chhabra
Summary: Microwave (MW) and conventional heating (CH) methods were compared for the synthesis of fuel additives from levulinic acid. Phosphomolybdic acid (PMA) and phosphotungstic acid (PTA)-containing graphitic carbon nitride (GCN) were synthesized and optimized to achieve high yields. MW significantly reduced reaction times and is a more sustainable approach for the synthesis of various fuel additives. Scale-up experiments showed that MW with optimum GCN-PMA achieved higher productivity compared to CH conditions.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Polymer Science
Akina Yoshizawa, Chie Maruyama, Samuel Budi Wardhana Kusuma, Naoki Wada, Kosuke Kuroda, Daisuke Hirose, Kenji Takahashi
Summary: In this study, aryloxy ILs were prepared as non-carboxylate-type and basic ILs to prevent the introduction of an acyl group from the IL onto the hydroxy group of cellulose during esterification. The optimized Emim2OPy IL and mixed solvent system achieved rapid cellulose esterification within 30 minutes with an excellent degree of substitution, without any undesired substituent introduction.
Article
Chemistry, Physical
Jing Ding, Chengwei Zhou, Zuowang Wu, Chong Chen, Nengjie Feng, Lei Wang, Hui Wan, Guofeng Guan
Summary: Efficient and separable Bronsted acid catalyst for one-pot conversion from low-value oils to biodiesel has been a challenge. In this study, a novel magnetically recyclable catalyst was developed by grafting poly(ionic liquid) onto Fe3O4/SiO2, demonstrating good catalytic performance and easy separation characteristics. The catalyst showed high magnetization value and maintained catalytic activity after repeated use.
APPLIED CATALYSIS A-GENERAL
(2021)
Review
Chemistry, Multidisciplinary
Aparna Gautam, Vijay B. Khajone, Pundlik R. Bhagat, Sushil Kumar, Dipesh S. Patle
Summary: Diminishing petroleum reserves, increasing carbon emissions, and growing fuel demand necessitate the search for alternative fuels. Biodiesel, produced from oils or fats, is a promising alternative. Photocatalysis, through semiconductors' light-induced emission of electrons and holes, offers an efficient method for biodiesel synthesis. This article reviews the various types, mechanisms, and prospects of metal-based, ionic liquid, and ionic liquid-based photocatalysts. Factors affecting esterification and transesterification, reaction chemistry, and reactor modifications for different oil feedstocks are discussed. Photocatalytic transesterification and esterification using metal or ionic liquid-based photocatalysts achieve up to 95% conversion of feedstocks under mild conditions, with catalyst reusability.
ENVIRONMENTAL CHEMISTRY LETTERS
(2023)
Article
Multidisciplinary Sciences
Arash Ghorbani-Choghamarani, Zahra Taherinia, Yunes Abbasi Tyula
Summary: In this study, a metal-organic framework catalyst based on molybdenum and piperidine-4-carboxylic acid was synthesized and employed for biodiesel production. The catalyst exhibited high activity, thermal stability, and reusability.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Cheng Zong, Ruizhuan Wang, Hao Qin, Lifang Chen, Zhiwen Qi
Summary: This study proposes an intensified synthesis of glycerol monocaprylin using an ionic liquid as a dual solvent and catalyst. By selecting an ionic liquid with good solubility and temperature-responsive behavior, the selectivity, separation, and recycling of the product can be improved. The optimized reaction conditions achieve high conversion and yield. Furthermore, the ionic liquid maintains its catalytic performance after multiple cycles.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Anna Szelwicka, Karol Erfurt, Sebastian Jurczyk, Slawomir Boncel, Anna Chrobok
Summary: This study proposed a highly efficient method of synthesizing n-butyl acrylate via esterification of acrylic acid and n-butanol in the presence of supported ionic liquid phase biocatalyst. By optimizing the reaction conditions, a 99% yield of n-butyl acrylate was achieved within 24 hours. The use of SILP biocatalyst not only enhanced the activity of CALB, but also demonstrated significant stability over multiple runs.
Article
Energy & Fuels
Shucui Han, Jinbei Yang, Hui Huang
Summary: Two double-site acidic ionic liquids were synthesized and one of them showed excellent catalytic performance and recyclability in esterification reactions. Under optimized conditions, this ionic liquid achieved a conversion rate of 98.65% for oleic acid and maintained high catalytic activity for 9 cycles.
Article
Engineering, Chemical
Xiantao Feng, Qiannan Wang, Mengyang Wang, Liang Liu
Summary: Three kinds of alkoxy group-functionalized acidic ionic liquids were studied, with one of them showing the best performance in reaction separation and maintaining catalytic activity after multiple recycling.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Bin Wang, Dawei Cao, Xuecheng Ma, Yun Feng, Lin Zhang, Yonghong Zhang, Chenjiang Liu
Summary: A transition-metal-free synthetic strategy has been developed for the synthesis of N-aryl amides, using environmentally benign and readily available starting materials under ambient conditions. The reusability of the promoter further proved the practicality of this method.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Mikio Maseda, Toshiyuki Takamuku
Summary: The complex formation equilibria of Zn2+ ion with acetonitrile (AN) molecules in bis(trifluoromethylsulfonyl)amide (TFSA-)-based ionic liquid [C2mim][TFSA] were studied using 15N NMR spectroscopy and density functional theory (DFT) calculation. The solvation complex of Zn2+ with TFSA- anions was determined to be [Zn(tfsa)3]-, in which three TFSA- anions coordinate with Zn2+ as bidentate ligands. The structure of Zn2+-AN complexes in [C2mim][TFSA]-AN solutions were characterized as [Zn(tfsa)2(an)2], [Zn(tfsa)(an)4]+, and [Zn(an)6]. The stability constants of these complexes were determined based on the relationship between the chemical shift value of TFSA- anions and the concentration ratio of AN to Zn2+.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Sumana Brahma, Ramesh L. Gardas
Summary: This study provides a detailed analysis of the volumetric and acoustic properties of dilute solutions of ionic liquids and acetonitrile. The findings are important for potential engineering applications and process design, and contribute to our understanding of the intermolecular interactions between solutes and solvents.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Mohammed Arab Ait Tayeb, Noureddine Tchouar, Francois Alexandre Miannay, Abdenacer Idrissi
Summary: In this study, the impact of C(4)mimBF(4)/acetonitrile mixture composition on charge transfer in Coumarin 153 after photoexcitation was investigated using DFT and TD-DFT. The results suggest that the effect of the mixture composition on the charge transfer in C153 is weak, as indicated by small changes in descriptors.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
