A5100630616- Ionic liquids properties and applications
- Carbon dioxide utilization in catalysis
- CO2 Reduction Techniques and Catalysts
- Phase Equilibria and Thermodynamics
- Catalysis for Biomass Conversion
- Chemical Synthesis and Reactions
- Asymmetric Hydrogenation and Catalysis
- Carbon Dioxide Capture Technologies
- Thermodynamic properties of mixtures
- Chemical and Physical Properties in Aqueous Solutions
- biodegradable polymer synthesis and properties
- Asymmetric Synthesis and Catalysis
- Synthetic Organic Chemistry Methods
- Catalytic Alkyne Reactions
- Polymer composites and self-healing
- Advanced Battery Technologies Research
- Ammonia Synthesis and Nitrogen Reduction
- Metal-Organic Frameworks: Synthesis and Applications
- Chemistry and Chemical Engineering
- Extraction and Separation Processes
- Advanced Photocatalysis Techniques
- Adsorption and Cooling Systems
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Biochemical and biochemical processes
Institute of Process Engineering
2017-2024
Ji Hua Laboratory
2022-2024
University of Chinese Academy of Sciences
2024
Zhengzhou Institute of Emerging Industrial Technology
2023
Huizhou University
2023
State Key Laboratory of Multiphase Complex Systems
2018-2021
Chinese Academy of Sciences
2006-2021
Shanghai University
2020-2021
Zhaoqing University
2021
College of Medical Sciences
2021
The Pd-catalyzed asymmetric allylic alkylation (AAA) of phenol allyl carbonates serves as an efficient strategy to construct the C-O bond allowing access chiral chromans in up 98% ee. effect pH and influence olefin geometry, well substitution pattern on ee absolute configuration were explored detail. These observations suggest a mechanism involving cyclization more reactive pi-allyl palladium diastereomeric intermediate enantiodiscriminating step (Curtin-Hammett conditions). This methodology...
By one-step assembly with mesoporous silica, different amounts of EmimBr were dispersed and confined for boosting CO<sub>2</sub> conversion into cyclic carbonates.
Novel dicationic pyrazolium ILs supported on MCM-41 were rationally fabricated. The optimized C 6 Pz–APTES/MCM-41 catalyst achieves superior catalytic performance toward the CO 2 cycloaddition by integrating HBDs (C3/C5–H) and mesoporous structures.
Solubility behaviors of binary difluoromethane (HFC-32) and 1,1-difluoroethane (HFC-152a) systems with ionic liquids (ILs) 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([Emim]OTf) 1-butyl-3-methylimidazolium ([Bmim]OTf) have been studied by using an isothermal synthetic apparatus at temperatures (273.15, 298.15, 323.15 348.15) K pressures (0.04 to 1.0) MPa. Experimental solubility data were successfully correlated the nonrandom two-liquid (NRTL) activity coefficient model. It was...
A heterogeneous polymeric ionic liquid exhibits nearly equivalent activity to its monomer for CO<sub>2</sub> conversion into cyclic carbonates.
An examination of earlier reports poor-to-modest results using Pd-catalyzed asymmetric allylic alkylations (AAA) to effect cyclization form tetrasubstituted carbons reveals several novel factors that can influence this class reactions. Thus, carboxylate has a major on such cyclizations wherein the ee increases from 14% favoring S with no 84% R enantiomer in presence 1 equiv carboxylate. Changing double bond geometry E Z further 97%. Furthermore, chiral catalyst forms E-alkene alkene. In...
Green synthesis of high-molecular-weight isosorbide-based polycarbonate (PIC) with excellent properties is a tremendous challenge and profoundly influenced by the precursor. Herein, an ecofriendly catalyst was employed to obtain more reactive PIC precursor dicarboxymethyl isosorbide (DC) 99.0 % selectivity through transesterification reaction dimethyl carbonate. This indispensable stage one-pot green PIC, playing critical role in giving insight into polymerization mechanism polymer melt...
A series of heterogeneous catalysts, combined hydrogen bond donors and ionic liquids, are reported for efficient CO<sub>2</sub> cycloaddition with epoxides.
Carbon dioxide (CO2) conversion into carbonates is one of the important ways to reduce carbon emissions. In this study, several phosphonium-based functional deep eutectic solvents (DESs) were prepared as catalysts for synthesis cyclic under mild conditions. The research showed that conditions (60 °C, 0.8 MPa, 4 h, and 3.5 mol% catalyst loading), 1-ethylamine-3-butylphosphine bromide−diethylene glycol ([P4,4,4,2NH2][Br]-DEG) DES can achieve 96% propylene carbonate (PC) yield. addition, be...
Novel dicationic pyrazolium ionic liquids were synthesized and utilized as catalysts for the coupling reaction of diluted/pure CO 2 epoxides to carbonates under mild conditions without metal/solvent.
The combination of ionic liquids (ILs) and refrigerants to be used for absorption cooling has been proposed in recent years. In this paper, the boiling point method was adopted measure vapor pressure water + 1,3-dimethylimidazolium chloride ([DMIm]Cl) 2,2,2-trifluoroethanol (TFE) 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIm]BF4) systems. measured ranges mass fraction ILs were from (1 100) kPa 0.4 0.85 H2O [DMIm]Cl system (3 0.35 0.9 TFE [EMIm]BF4 system, respectively. Antoine type...
In this paper, the water + 1-(2-hydroxyethyl)-3-methylimidazolium chloride ([HOEtMIM]Cl) binary system was studied as a novel alternative working pair of absorption heat pump cycle. Thermodynamic properties including vapor pressure, density, and capacity were measured in mole fraction range from 0.0122 to 0.3071 [HOEtMIM]Cl. The pressures determined by boiling-point method pressure (2.82 102.29) kPa correlated nonrandom two-liquid (NRTL) model. densities capacities temperature (298.15...
Phenolic ionic liquid structure can be designed readily to control the molecular weight of isosorbide-derived polycarbonates.
An eco-compatible route to polycarbonates with various molecular weights has been developed by employing ionic liquids that activate monomers.
Pd- and Ru-catalyzed cycloisomerizations of 1,6-enynes are compared contrasted. Such considerations led to the enantioselective synthesis a cyathin terpenoid, (+)-allocyathin B2 (1). The features Pd-catalyzed asymmetric allylic alkylation (AAA) install initial quaternary center, diastereoselective cycloisomerization construct six-membered ring, hydroxylative Knoevenagel reaction introduce final hydroxyl group. We demonstrate for first time mechanism-based stereochemical divergence in...