Article
Energy & Fuels
Peng Gao, Lin Yang, Jixiang Wang, Jun Gao, Dongmei Xu, Linzheng Ma, Lianzheng Zhang, Yinglong Wang
Summary: It is important to develop sustainable denitrogenation technology due to the impact of nitrogen compounds on the quality of fuel oils. To address the issues of incomplete denitrogenation and harsh conditions, an extractive denitrogenation method using eco-friendly piperazine-based ionic liquids (Pi-based ILs) was developed. The study evaluated the performance of the synthesized Pi-based ILs in removing pyrrole from oil and investigated the conformational relationship between denitrogenation performance and ILs structure. The results showed that the eco-friendly [C1Pi][Lac] exhibited the highest removal efficiency of 95.90% under optimal denitrogenation conditions.
Article
Engineering, Chemical
Lianwen He, Jing He, Peng Cui, Yuting Feng, Mingqing Hua, Jinrui Zhang, Peiwen Wu, Wenshuai Zhu, Huaming Li, Zhichang Liu, Chunming Xu
Summary: By introducing porous boron nitride into ionic liquids, the efficiency of sulfur extraction from fuel oil can be improved. Using m-BN-PIL as an extractant under optimized conditions achieves desulfurization performances of 59.2% and 61.8% for dibenzothiophene and 4-methyldibenzothiophene, respectively. After four stepwise extractions, the extraction efficiency over dibenzothiophene reaches 98.2%, achieving deep desulfurization of fuel oil.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Thermodynamics
Changgeng Sun, Shaokun Tang
Summary: This paper investigates the effects of four guanidinium di an de-based ene c salts as energetic additives to a hypergolic ionic fluid. The salts were found to significantly improve the density and specific impulse of the fluid.
COMBUSTION AND FLAME
(2021)
Article
Chemistry, Physical
Vladislav Gorbunov, Aleksey Buryak, Kirill Oskolok, Andrey G. Popov, Irina Tarkhanova
Summary: In this article, a series of effective catalysts based on betaine and sulfuric or phosphomolybdic acids were obtained. These compositions were characterized and tested in the oxidation of sulfur- and nitrogenous-containing compounds by H2O2. The acidity change is non-linearly influenced by the amount of heteropolyacid (HPA), and the removal of sulfur-containing compounds is correlated with the concentration of Bronsted acid sites on the catalyst surface. On the other hand, the removal of pyridine is primarily determined by the content of heteropolyacids in the catalyst.
Article
Energy & Fuels
Zenglin Jiang, Xiaohong Wang, Hao Deng, Jia Zhao, Yugang Li
Summary: This study selected 16 environmentally friendly and easily degradable ionic liquids for fuel desulfurization research. Through molecular mechanism studies and experiments, it was found that [C2COOCH3ImC6H13][NTF2] ILs exhibited high desulfurization efficiency.
JOURNAL OF THE ENERGY INSTITUTE
(2024)
Article
Energy & Fuels
Sofia Laraib, Sana Zulfiqar, Noshaba Tabassum, Sohaila Andleeb, Saima Nasreen
Summary: Humanity is threatened by the systematic pollution of the environment, accompanied by dwindling resources due to rapid population growth. To address this issue, researchers synthesized graphene oxide-GO and magnetic graphene oxide-MGO and fabricated them with cellulose acetate for desulfurization of fuel. These materials demonstrated effective desulfurization and adsorption capabilities, offering a promising solution to reduce pollution.
Article
Energy & Fuels
Mahdieh Amereh, Ali Ebrahimpoor Gorji, Mohammad Amin Sobati
Summary: The distribution of pyridine between the IL-rich phase and hydrocarbon-rich phase was predicted using the QSPR approach. A large dataset of 51 ternary systems was collected, which covered 19 cations, 14 anions, and 10 hydrocarbons. Linear and non-linear models were developed using MLR and MLP, respectively, with acceptable prediction capability. The study also investigated the impact of structural changes in cations, anions, and hydrocarbons on pyridine distribution.
Article
Biotechnology & Applied Microbiology
Pingping Zhao, Xiaoxin Wang, Qiang Wang, Lianzheng Zhang, Dongmei Xu, Jun Gao
Summary: A series of ionic liquid (IL) extractants were developed for the removal of sulfides from fuels. The ILs, synthesized with functionalized 1,8-diazabicyclo[5.4.0]undecano-7-ene (DBU) cations and large volume difluoromethane sulfonimide (NTf2) anion, showed good performance in removing benzothiophene (BT), thiophene (TH), and dibenzothiophene (DBT) in model oil.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Ruel McKenzie, Andrew Knoll, Bojie Wang, Sainath Jadhav, Robert Walker, Ashley Spirrison
Summary: The formation of Ni-based coordination polymers with 1-ethyl-3-methylimidazolium dicyanamide (emim dca) as the bridging ligand was achieved by a salting-out approach. The resulting coordination polymer displayed thermal stability up to 400 degrees C and had a nanorod-like morphology. The presence of potential reactivity was indicated by the thermal activation of the compound, likely through the nitrile groups.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Yanwen Guo, Xingjian Liu, Jingwen Li, Bing Hu
Summary: Efficient and green desulfurizing solvents based on deep eutectic solvents (DESs) were synthesized and characterized, achieving high removal rates of sulfur compounds in model oil. The optimized reaction conditions yielded removal rates of sulfur compounds up to 99%, and a possible mechanism of the synergistic effect of two hydrogen bonds and the oxidant was proposed.
Article
Engineering, Chemical
Miguel Viar, Salvador Asensio-Delgado, Fernando Pardo, Gabriel Zarca, Ane Urtiaga
Summary: In this study, the design of extractive distillation (ED) processes for separating the components of the R-410A mixture was evaluated by considering the influence of mass transfer phenomena and ionic liquid (ILs) properties. The results showed that solubility selectivity was the most influential IL property, and [C2C1im][SCN] was identified as a promising entrainer due to its high solubility selectivity and low viscosity, which allowed for operation at lower temperatures. The recovered R-32 can serve as a greener alternative to high-GWP R-410A and as a main component in the formulation of new low-GWP mixtures.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Nan Jin, Jun Yue, Yuchao Zhao, Hongying Lu, Chengxiu Wang
Summary: The study focused on intensifying extractive desulfurization using microreactor, which succeeded in extracting aromatic heterocyclic sulfur compounds like dibenzothiophene from model diesel. The process achieved efficient desulfurization in a shorter time, with the extraction modeled based on a two-film model and investigation into the mechanisms for improved performance at higher temperatures or larger IL to MD flow ratios.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Hong Li, Guanlun Sun, Dongyang Li, Li Xi, Peng Zhou, Xingang Li, Ji Zhang, Xin Gao
Summary: This study selected an appropriate ionic liquid to separate ethyl acetate and ethanol, and investigated the interaction mechanism between solvent molecules and the ionic liquid through quantum mechanics calculations and molecular dynamics simulations. The results showed that the introduction of ILs has a prominent effect on reducing the number of hydrogen bonds among solvent molecules. Increasing the concentration of the cation will enhance the interaction with solvent molecules.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Materials Science, Multidisciplinary
Dawid Zielinski, Andrea Szpecht, Paulina Hinc, Hieronim Maciejewski, Marcin Smiglak
Summary: Research on DABCO-based ionic liquids as latent curing agents for epoxy resins shows promising results, with the ability to initiate polymerization and create composites with special properties. The main advantages of these ILs are their long-term storage capability without compromising curing properties, and the reduced quantity needed for epoxy resin curing.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Energy & Fuels
Bo Yang, Yongqiang Cheng, Kai Chen, Zhong Wei, Zhigang Lei, Guoxuan Li
Summary: This study focuses on enhancing the ester hydrolysis to alcohol process through intensification using a combination of reactive and extractive distillation with ionic liquids-based mixed solvents. The use of ILMS processes significantly reduces energy consumption and total cost.
Article
Chemistry, Multidisciplinary
Xuemei Liu, Chaonan Cui, Shuoshuo Wei, Jinyu Han, Xinli Zhu, Qingfeng Ge, Hua Wang
Summary: This study presents a new strategy for designing efficient photocatalysts that can convert CO2 into hydrocarbons by utilizing synergistic catalytic sites. The findings provide a solution for the selective photocatalytic reduction of CO2 to CH4.
Article
Chemistry, Multidisciplinary
Chengxian Hu, Dan Wang, Lu Wang, Ying Fu, Zhengyin Du
Summary: A novel one-pot, three-component reaction conducted under electrochemical conditions was studied. The reaction involved 2-aminothiophenols, aldehydes, and malononitrile, using TBABF4 as an electrolyte and CuI as a catalyst. The proposed reaction mechanism suggested that CuI served as an electron relay. This method offers simplified operation, high atom economy, and mild reaction conditions.
Article
Chemistry, Multidisciplinary
Zhi Yang, Yu Chen, Linxi Wan, Yuxiao Li, Dan Chen, Jianlin Tao, Pei Tang, Fen-Er Chen
Summary: A highly enantioselective method for the complete hydrogenation of pyrimidinium salts using Ir/(S,S)-f-Binaphane complex as the catalyst was developed. This method provides easy access to fully saturated chiral hexahydropyrimidines, which are prevalent in many bioactive molecules. The reactions exhibit high yields and enantioselectivities under mild reaction conditions without additives. Successful application of this methodology in a continuous flow fashion further extends its practical utility.
Article
Chemistry, Multidisciplinary
Tina Jeoh, Jennifer Danger Nill, Wujun Zhao, Sankar Raju Narayanasamy, Liang Chen, Hoi-Ying N. Holman
Summary: In this study, the enzymatic hydrolysis of cellulose was investigated using real-time infrared spectromicroscopy. The spatial heterogeneity of cellulose was found to impact the hydrolysis kinetics. Hydration affected cellulose ordering, and Cel7A preferentially removed less extensively hydrogen bonded cellulose.
Article
Chemistry, Multidisciplinary
Tiphaine Richard, Walid Abdallah, Xavier Trivelli, Mathieu Sauthier, Clement Dumont
Summary: An effective method of grafting functionalities onto lignin based on glycerol carbonate has been developed using an efficient nickel-catalysed telomerisation reaction. This method allows lignin to have new reactive functions and reduces the glass transition temperatures of modified lignins, thereby expanding the application range of lignin-based resins.
Article
Chemistry, Multidisciplinary
Jing Qi, Xiyan Wang, Gan Wang, Srinivas Reddy Dubbaka, Patrick ONeill, Hwee Ting Ang, Jie Wu
Summary: This study presents a green and environmentally friendly approach for the synthesis of imides using electrocatalytic oxidation with H2O as the oxygen source. The method eliminates the need for toxic or expensive oxidants and achieves high yields under mild reaction conditions. It shows broad substrate compatibility and potential for industrial applications.
Article
Chemistry, Multidisciplinary
Babasaheb Sopan Gore, Lin-Wei Pan, Jun-Hao Lin, Yi-Chi Luo, Jeh-Jeng Wang
Summary: Here, we report a visible light-promoted intramolecular radical cascade reaction for the construction of fluorenol and naphthalene-fused cyclopropyl carbaldehyde derivatives. This method offers mild reaction conditions, a broad substrate scope, excellent step efficiency, and scalability, without the need for external chemical oxidants. The novelty of this protocol was demonstrated by synthesizing chrysene analogs and performing late-stage functionalizations.
Article
Chemistry, Multidisciplinary
Juho Antti Sirvio, Idamaria Romakkaniemi, Juha Ahola, Svitlana Filonenko, Juha P. Heiskanen, Ari Ammala
Summary: This article discusses the method of using supramolecular interaction between an aromatic hydrogen bond donor and lignin to achieve rapid delignification of softwood at low temperatures.
Article
Chemistry, Multidisciplinary
Yunyan Meng, Chunxiang Pan, Na Liu, Hongjiang Li, Zixiu Liu, Yao Deng, Zixiang Wei, Jianbin Xu, Baomin Fan
Summary: A novel visible light-driven synthesis method for 2,3-diamines has been developed, which has mild conditions, avoids the use of metal reagents, and can synthesize diamines and diols in one pot.
Article
Chemistry, Multidisciplinary
Mingqing Huang, Haiyang Huang, Mengyao You, Xinxin Zhang, Longgen Sun, Chao Chen, Zhichao Mei, Ruchun Yang, Qiang Xiao
Summary: A direct air-oxidized strategy for the synthesis of benzo[b]phosphole oxides was developed in this study. Arylphosphine oxides were transformed into phosphinoyl radicals, which were further combined with various alkynes to achieve the desired products. DFT calculations revealed the mechanism of phosphinoyl radical formation.
Article
Chemistry, Multidisciplinary
Anwei Wang, Jiayin Huang, Chunsheng Zhao, Yu Fan, Junfeng Qian, Qun Chen, Mingyang He, Weiyou Zhou
Summary: This study demonstrates an innovative strategy for the aerobic oxidation of C(sp(3))-H bonds using gamma-valerolactone. By optimizing the reaction conditions and utilizing specific catalysts, efficient oxidation of C(sp(3))-H bonds is achieved with good chemoselectivity in certain cases.
Article
Chemistry, Multidisciplinary
Shun Li, Likai Tong, Zhijian Peng, Bo Zhang, Xiuli Fu
Summary: Sulfide compounds show promise as electrocatalysts for water splitting, but their performance is limited by factors such as limited active sites and hindered substance transport. This study successfully prepared a high-entropy sulfide (ZnCoMnFeAlMg)(9)S-8, which reduced grain size and increased specific surface area, enabling the realization of a dual-functional catalyst with multiple catalytic sites. High entropy also modulated the electronic properties of sulfides, reducing the potential energy barrier for hydrolysis. This research introduces a new approach for functionalizing high entropy nanomaterials and improves the performance of water splitting catalysts.