Article
Energy & Fuels
Mantian Li, Ping Lu, Changshen Ye, Jie Chen, Ting Qiu
Summary: To address the limitations of mass transfer and poor affinity between catalysts and feedstock oils in the transesterification reaction for biodiesel production, researchers synthesized a series of amphiphilic heteropolyacid-based sulfonic acid-functionalised ionic liquids (AHPA-SFILs). The AHPA-SFILs showed excellent catalytic performance by dissolving in the reaction medium and could be easily recovered. Under optimized conditions, [C16N-PS]-HPMo-1 AHPA-SFILs achieved a high yield of biodiesel, indicating promising application potential.
Article
Chemistry, Physical
Maria B. Martini, Jose L. Fernandez, Claudia G. Adam
Summary: This research demonstrates the relationship between the amount of free sulfuric acid and the activity of sulfonic-acid-functionalized ionic liquids as acid catalysts for transesterification reactions. The addition of sulfonic acid groups significantly enhances the catalytic activity of the ionic liquids. These sulfonic acid functionalized ionic liquids act as reservoirs for releasing free acid during the reaction, serving as the actual acid catalyst. The non-sulfonic ILs, on the other hand, show lower catalytic activities at room temperature due to their limited free acid content, which can be improved by raising the reaction temperature.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Hong Shi, Tiantian Wang, Qian Zhao
Summary: In this study, a novel ionic liquid composite catalyst was synthesized with high activity and durability, showing excellent catalytic properties in the ketone reaction of cyclohexanone with ethylene glycol.
Article
Chemistry, Analytical
Tong Chen, Xue Yang, Shuya Wang, Guangsan Song, Hongbin Zhou, Weijian Shen, Ling Gao
Summary: A novel stationary phase of Au nanoparticles covalently bonded to ionic liquid bridged periodic mesoporous organosilicas hydrophilic microspheres was reported for per aqueous liquid chromatography (PALC), which greatly improved the acid and base resistance compared with traditional columns. This new column demonstrated enhanced resolution for hydrophilic compounds under the PALC mode, with a retention mechanism of mixed anion-exchange and hydrophobic interaction. The PALC method with the new column showed higher efficiency and simultaneous detection capability for biogenic amines, providing a green alternative to HILIC.
Article
Chemistry, Inorganic & Nuclear
Andreia Forte, Sandra Gago, Manuela Ribeiro Carrott, Peter Carrott, Celso Alves, Fernando Teodoro, Rui Pedrosa, Isabel M. Marrucho, Luis C. Branco
Summary: Organic salts based on different choline derivative cations and metal ions were immobilized in mesoporous silica nanoparticles through a two-step synthetic method, characterized using various techniques and evaluated for cytotoxicity in different cell lines. The characterization data confirmed successful functionalization and provided insights into the materials' properties, while the cytotoxicity results revealed differences between the metal organic salts and their immobilized analogues.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
Mohsen Bakhtiarian, Mohammad Mehdi Khodaei
Summary: In this study, a pectin-supported dual acidic pyridinium ionic liquid catalyst was developed for the efficient synthesis of pyrazole derivatives. The catalyst exhibited remarkable catalytic activity and good recyclability in the multi-component reaction.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Deepak K. Pandey, Divya Jadav, Tushar Patil, Swapnil Dharaskar, Nao Tsunoji, Rajesh Kumar, Dheeraj K. Singh, Mahuya Bandyopadhyay
Summary: This study addresses the global warming issue by preparing supported ionic liquids and designing membranes for gas separation technology, showing strong affinity of these membranes towards CO2 and CH4 gases with a good correlation between experimental and theoretical findings.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
V. B. R. Krishnan, Santha Kumari Merugu, Siva Jyothsna Gali, Ravikumar Kapavarapu, Hari Babu Bollikolla
Summary: In the presence of imidazole hydrochloride, an efficient one-pot three-component synthesis of dihydropyrimidines was developed with good yields. Most of the synthesized compounds showed moderate to good anti-cancer activity.
Article
Chemistry, Physical
Bela Urban, Gabor Szalontai, Mate Papp, Csaba Feher, Attila C. Benyei, Rita Skoda-Foldes
Summary: Numerous organic reactions catalyzed by the ionic liquid product of chlorosulfonation of 1-methylimidazole have been reported recently. Controversial assumptions on the real structure of the catalyst have emerged, but it has now been confirmed to be 1-methylimidazolium chlorosulfate. This structure was verified through X-ray crystallography and NMR spectroscopy, with experiments supporting rapid hydrolysis in the presence of water traces.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Claudio Araya-Lopez, Jael Conejeros, Cristian Valdebenito, Rene Cabezas, Gaston Merlet, Jose F. Marco, Gabriel Abarca, Ricardo Salazar, Julio Romero
Summary: A new type of ionic liquids based on triazoles supported on alumina has been developed for the dehydration of fructose to selectively produce 5-HMF. The catalysts based on triazolium-ionic liquids supported on Al2O3 were synthesized and used for the synthesis of 5-HMF from fructose in DMSO as the reaction solvent.
Article
Chemistry, Inorganic & Nuclear
Wanlu Liu, Anna M. Kaczmarek, Karel Folens, Gijs Du Laing, Pascal Van der Voort, Rik Van Deun
Summary: Three Periodic Mesoporous Organosilica (PMO) materials were presented, including a pyridine dicarboxamide functionalized PMO (DPA-PMO) and two amine functionalized PMOs (Am-PMO and Am-ePMO). These materials show potential for near-infrared (NIR) luminescence applications.
DALTON TRANSACTIONS
(2021)
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
Engineering, Chemical
Hassan M. A. Hassan, Mohamed A. Betiha, Mosaed S. Alhumaimess, Thamer S. Alraddadi, Shimaa K. Mohamed, Sherif A. Younis, Ayoub Abdullah Alqadami, Ibrahim Hotan Alsohaimi
Summary: Sulfur compounds produced by the combustion of fossil fuels are a major component of air pollution. In this study, PMO-IL-based heterogeneous catalysts were synthesized and tested for desulfurization of aromatic sulfur compounds. The results showed that MnO4-PMO-IL and HPW12O40-PMO-IL catalysts had the highest desulfurization efficiency at a smaller O/S ratio, making them effective catalysts for the oxidative desulfurization of fuel.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Zhangkun Wei, Duoduo Guo, Jianhua He, Xiaoxiao Liu, Yabing Wei, Aijuan Bao, Xiaojie Jin, Weibao Kong, Ji Zhang, Junlong Wang
Summary: Controllable selenylation strategy was achieved by using sulfonic acid functionalized ionic liquids (SFILs) as catalysts in the synthesis of selenized Artemisia sphaerocephala polysaccharides. The selenylation efficiency and polysaccharide structure were regulated by the cation/anion constitute. The study provided insights into manipulating Se content and molecular weight of Se polysaccharides.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Review
Chemistry, Multidisciplinary
Porag Bora, Bondana Bora, Utpal Bora
Summary: Recent developments in Dakin oxidation have focused on the conversion of ortho- and para-hydroxy benzaldehydes and acetophenones to dihydric phenols, with efforts being made to find efficient reaction media and alternative oxidants. Despite facing future challenges, this field shows promising potential applications.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Seyedeh Zahra Alizadeh, Babak Karimi, Hojatollah Vali
Summary: A nitrogen-rich ordered mesoporous carbon (DNOMC) was successfully synthesized and used as a support for palladium nanoparticles to prepare a catalyst with high activity and selectivity in the oxidation of alcohols in water. The catalyst showed good reusability and potential industrial application value.
Review
Materials Science, Multidisciplinary
Babak Karimi, Nasim Ganji, Omid Pourshiani, Werner R. Thiel
Summary: This article provides a comprehensive review of the recent advances in the synthesis, morphology, functionalities, and applications of periodic mesoporous organosilicas (PMOs), with a focus on developments after 2014. Special attention is given to a new family of PMOs, namely hollow spherical and hollow/yolk shell PMOs, which offer additional benefits compared to traditional PMOs.
PROGRESS IN MATERIALS SCIENCE
(2022)
Article
Multidisciplinary Sciences
Maryam Neysi, Dawood Elhamifar
Summary: A novel magnetic ionic liquid based periodic mesoporous organosilica supported palladium nanocomposite was synthesized and characterized. Its catalytic performance in the Heck reaction was investigated, showing high activity and stability.
SCIENTIFIC REPORTS
(2022)
Article
Biotechnology & Applied Microbiology
Rosaria Ciriminna, Mina Ghahremani, Babak Karimi, Mario Pagliaro
Summary: This study provides an overview of the extraction routes of nanocellulose, highlighting the limitations imposed by high costs in its industrial applications. However, in recent years, green extraction routes have been developed, offering the potential for widespread use of nanocellulose in various industries through sustainable production and utilization of low-cost waste materials.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2023)
Article
Chemistry, Inorganic & Nuclear
Ramin Nemati, Dawood Elhamifar, Ali Zarnegaryan, Masoumeh Shaker
Summary: This study successfully synthesized a novel W6O19/amine-containing magnetic silica nanocomposite as a powerful nanocatalyst for the synthesis of spirooxindole-pyrans. The designed catalyst exhibited high thermal and chemical stability, as well as excellent magnetic properties and spherical morphology. Moreover, the nanocomposite could be recovered and reused multiple times without significant decrease in its activity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Raana Tajgardoon, Ali Zarnegaryan, Dawood Elhamifar
Summary: In this study, a novel organic-inorganic hybrid catalyst was synthesized by attaching polyoxometalate onto the surface of graphene oxide. The designed catalyst showed high activity, recoverability, reusability, and durability in the preparation of benzimidazoles.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Polymer Science
Shiva Kargar, Dawood Elhamifar, Davar Elhamifar
Summary: In this study, a novel composite material HDPE/IL-Mo was prepared and its catalytic application was investigated. The composite exhibited excellent catalytic performance in the synthesis of bioactive compounds under solvent-free conditions.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Chemistry, Applied
Sedigheh Abedanzadeh, Babak Karimi, Zainab Moosavi-Movahedi, Omid Pourshiani, Alireza Badiei, Ali A. Moosavi-Movahedi
Summary: Artificial enzymes resembling natural enzymes were developed using a rational design approach to simulate the coordination sphere around the iron active center. Periodic mesoporous organosilica (PMO) materials were used as supports due to their unique properties, and a new peroxidase-like nanozyme was fabricated. The biomimetic pathways used in this study showed potential for the development of nanozymes with excellent thermal stability and long-term storage stability.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Organic
Babak Karimi, Akbar Mobaraki, Hamid M. M. Mirzaei, Hojatollah Vali
Summary: A series of metal-free tandem reactions were conducted to synthesize pharmaceutically important 2-substituted benzoazoles using catalyst-free conditions with Et-PMO-Me-PrSO3H and SBA-15-PrSO3H as solid acids. The selectivity between 2-mercaptobenzoxazole and 2-aminobenzoazole derivatives could be altered by changing the catalyst from hydrophobic material 1a to more hydrophilic catalyst 1b. This novel and green approach provides an alternative method for synthesizing 2-substituted benzoazole derivatives.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Parisa Mofatehnia, Dawood Elhamifar, Ghodsi Mohammadi Ziarani
Summary: A novel copper-containing Fe3O4@Gelatin material was prepared, characterized, and its catalytic activity was studied. The Fe3O4@Gelatin-Cu was prepared by coating natural gelatin polymer on magnetic Fe3O4 NPs followed by treatment with copper salt. The Fe3O4@Gelatin-Cu exhibited high yield of desired products, good recoverability, reusability, and stability, making it a valuable material in the catalytic world.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Chemistry, Multidisciplinary
Maryam Neysi, Dawood Elhamifar
Summary: In this study, a novel magnetic ethylene-based periodic mesoporous organosilica supported Pd-Schiff base complex (Fe3O4@PMO/SB-Pd) was synthesized and characterized. It was applied as a recoverable nanocatalyst for green synthesis of Suzuki products under ultrasonic conditions, leading to high yields. The advantages of this study include simple purification of products, the use of water solvent, easy catalyst separation, short reaction time, and high catalyst efficiency and recoverability.
FRONTIERS IN CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Fatemeh Taheri, Dawood Elhamifar, Shiva Kargar, Ali Zarnegaryan
Summary: A novel MS/AP-PTA nanocomposite with propylamine-grafted magnetic silica and treated with phosphotungstic acid was synthesized. Characterization techniques revealed a core-shell structure with high chemical and thermal stability. The MS/AP-PTA nanocomposite served as an efficient nanocatalyst for the synthesis of bioactive tetrahydrobenzo[b]pyrans under green conditions, exhibiting high yields and short reaction time. Leaching and recovery tests, as well as FT-IR analysis, demonstrated the high stability and heterogeneous nature of the catalytically active species on the MS/AP-PTA nanocatalyst.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Rosaria Ciriminna, Mina Ghahremani, Fahimeh Varmaghani, Babak Karimi, Mario Pagliaro
Summary: Chemistry, including electrochemistry, is understood and practiced using models and visualization. This study emphasizes the potential of a modeling approach focused on green chemistry applications in improving electrochemistry education. Green electrosynthesis experiments, in particular, greatly enhance student interest and learning in this interdisciplinary field.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2023)
Article
Chemistry, Physical
Omid Pourshiani, Babak Karimi, Hesamodin Moradi, Werner R. R. Thiel, Hojatollah Vali, Pietro Mastrorilli, Stefano Todisco
Summary: The catalytic activity of several supported catalysts with perruthenate anions in mesochannels of plugged and unplugged bifunctional periodic mesoporous organosilicas (Ru@BFPMOs) in the aerobic oxidation of alcohols was investigated. The morphology and structure of the materials were characterized, and it was found that all materials have a 2D-hexagonal symmetry structure. The resulting catalyst showed high efficiency in the oxidation of a wide variety of alcohols.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Nasim Shamsvand, Fahimeh Varmaghani, Babak Karimi, Hamzeh Hassanaki
Summary: The role of nitrogen functional groups in nitrogen-doped ordered mesoporous carbons (OMCs) was investigated using two home-made ionic liquid-derived OMCs with different nitrogen concentrations. It was found that the nitrogen content had a significant impact on the loading of electroactive species on the OMCs.
