A5100377953- Asymmetric Hydrogenation and Catalysis
- Carbon dioxide utilization in catalysis
- Atmospheric chemistry and aerosols
- Geology and Paleoclimatology Research
- Thermochemical Biomass Conversion Processes
- Remote Sensing and Land Use
- Chemical Synthesis and Reactions
- Air Quality and Health Impacts
- Catalytic C–H Functionalization Methods
- Atmospheric aerosols and clouds
- Coal and Its By-products
- Air Quality Monitoring and Forecasting
- Catalytic Alkyne Reactions
- Cyclopropane Reaction Mechanisms
- Lignin and Wood Chemistry
- Polymer crystallization and properties
- Rock Mechanics and Modeling
- Recycling and Waste Management Techniques
- Polymer Foaming and Composites
- Mine drainage and remediation techniques
- Bauxite Residue and Utilization
- Coal Properties and Utilization
- Chemical Looping and Thermochemical Processes
- Fluorine in Organic Chemistry
- Atmospheric Ozone and Climate
Sun Yat-sen University
2023-2024
Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)
2023-2024
Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)
2023-2024
China Meteorological Administration
2023-2024
Daqing Oilfield General Hospital
2024
Dalian University of Technology
2004-2023
Dalian University
2007-2023
Zhejiang Sci-Tech University
2023
North China University of Science and Technology
2023
University of Pittsburgh
2022
N-Heterocyclic Olefin (NHO) with high electronegativity at the terminal carbon atom was found to show a strong tendency for CO2 sequestration, affording adduct (NHO-CO2). X-ray single crystal analysis revealed bent geometry of binding in NHO-CO2 adducts an O-C-O angle 127.7-129.9°, dependent on substitute groups N-heterocyclic ring. The length C(carboxylate)-C(NHO) bond is range 1.55-1.57 Å, significantly longer than that C(carboxylate)-C(NHC) (1.52-1.53 Å) previously reported NHC-CO2...
This communication describes a convenient route to optically active propylene carbonate by catalytic kinetic resolution process resulting from the coupling reaction of CO2 and racemic epoxides using simple chiral SalenCo(III)/quaternary ammonium halide catalyst systems.
N-Heterocyclic carbene (NHC) functionalized MCM-41 was synthesized by reacting 1,3-bis-(4-allyl-2,6-diisopropylphenyl) imidazolium chloride with using 3-mercaptopropyltrimethoxysilane as silane coupling agent, and its CO2 adduct (designated MCM-41-IPr-CO2) further the reaction CO2. In situdiffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) used to investigate reversible capture-release ability of MCM-41-NHC. MCM-41-IPr-CO2 proved be an efficient heterogeneous catalyst for...
Abstract In den vergangenen Jahren wurde die CuH‐katalysierte Hydroaminierung entdeckt und als robuster konzeptionell neuer Synthesezugang zu enantiomerenangereicherten sekundären tertiären Aminen entwickelt. Der Erfolg auf diesem Gebiet möglich durch zahlreiche frühere Beispiele für Katalyse mit Kupfer(I)hydrid gut untersuchte Verwendung von Hydroxylaminestern elektrophile Aminquellen in ähnlichen kupferkatalysierten Reaktionen. Dieser Kurzaufsatz beschreibt Hintergrund, Fortschritte...
Abstract Chiral chromium complexes of tetradentate N , ′‐disubstituted bis(aminophenoxide) (designated as Salan, a saturated version Schiff‐base Salen ligand) in conjunction with an ionic quaternary ammonium salt can efficiently catalyze the copolymerization CO 2 racemic propylene oxide ( rac ‐PO) at mild conditions to selectively afford completely alternating poly(propylene carbonate) (PPC) ∼ 95% head‐to‐tail linkages and moderate enantioselectivity. These new catalyst systems predominantly...
The alkyl chain length of hydrophobic monomers significantly influences the properties associative polymers. In this study, four with varying lengths were copolymerized acrylamide, using inverse emulsion polymerization method. Four polyacrylamides successfully synthesized and characterized infrared spectroscopy, nuclear magnetic resonance (NMR), radius gyration detection, they compared (PAMs) (without monomers). Polymer morphology was analyzed scanning electron microscopy, while rheological...
The immobilization of homogeneous catalysts is a continuing goal for combining the advantages both and heterogeneous catalysis. However, significant loss in catalytic activity often found catalyst. Herein, we report novel strategy consisting multiwalled carbon nanotubes (MWNTs) functionalized with that are developed to combine positive aspects solid soluble supports. Using oxidation alcohols as model reaction, supported (MWNTs–TEMPO) can be homogeneously dispersed reaction medium conquer...
It is of great significance for engineering safety, economic benefits, environmental protection, and sustainable development to investigate the strata stability in filling mining with cemented rockfill. Consequently, this paper based on a specific coal mine where we applied fully-mechanized longwall designed rockfill material which particles satisfied Talbot gradation. Uniaxial triaxial compression experiments were carried out specimen, obtained relations between mechanical parameters...
The stable carbon and nitrogen isotopic composition (δ 13 C δ 15 N) of plants lichens can indicate a considerable amount information about the physiology ecology an environment.To our knowledge no isotope (C data have been generated for from Iceland.These could subsequently provide unique perspective cycling in Iceland aid interpretation analyses organic matter preserved lake sediments.We analyzed around four lakes (Litla-Viðarvatn, Torfadalsvatn, Stífluvatn, Arnarvatn stóra) northern...
Ozone (O3) is a significant air pollutant in the Pearl River Delta (PRD) region, with severe pollution events primarily associated Western Pacific Subtropical High (WPSH) and typhoon periphery synoptic weather patterns. To investigate continuity differences O3 processes influenced by these patterns, we analyze event Zhuhai from September 10 to 13, 2022. The study collects vertical profiles of differential absorption lidar wind fields observed Doppler profile lidar. We utilize ground-level...
The chiral SalenCo(III)OAc-catalyzed hydrolytic kinetic resolution (HKR) of racemic terminal epoxides to afford both enantioenriched and diols presents one the most important achievements in asymmetric synthesis chemistry. Previous studies mainly focused on development highly efficient catalysts, while rare reports concerned mechanistic understanding metal valence change, associated with formation inactive Co(II)-Salen complex. Herein, we report aspects catalyst deactivation regarding...
In this study, humidified air dielectric barrier discharge (DBD) plasma was used to inactivate Escherichia coli (E. coli), Staphylococcus aureus (S. aureus), and bacteriophages in biofilms containing DNA, NaCl, carbohydrates, proteins. The DBD very effective the inactivation of microbes (≤1.0 μm) biofilms. number surviving E. coli, S. aureus, strongly dependent on constituent thickness greatly reduced when treatment time increased from 5 s 150 s. Our analysis shows that UV irradiation not...