A5111928301- Ionic liquids properties and applications
- CO2 Reduction Techniques and Catalysts
- Carbon dioxide utilization in catalysis
- Catalysis for Biomass Conversion
- Phase Equilibria and Thermodynamics
- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Electrocatalysts for Energy Conversion
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Photocatalysis Techniques
- Asymmetric Hydrogenation and Catalysis
- Mesoporous Materials and Catalysis
- Nanomaterials for catalytic reactions
- Surfactants and Colloidal Systems
- Covalent Organic Framework Applications
- Chemical Synthesis and Reactions
- Catalysis and Hydrodesulfurization Studies
- Catalysts for Methane Reforming
- Lignin and Wood Chemistry
- Oxidative Organic Chemistry Reactions
- Ammonia Synthesis and Nitrogen Reduction
- Advanced battery technologies research
- Chemical Thermodynamics and Molecular Structure
- Supercapacitor Materials and Fabrication
- Polymer Foaming and Composites
Beijing National Laboratory for Molecular Sciences
2016-2025
Chinese Academy of Sciences
2016-2025
Institute of Chemistry
2016-2025
University of Chinese Academy of Sciences
2016-2025
East China Normal University
2019-2025
University of Petroleum
2025
Green Chemistry
2025
Interface (United States)
2010-2024
Sinopec (China)
2013-2024
Sinopec Research Institute of Petroleum Processing
2023-2024
How green was my valley: Green carbon science focuses on the transformations of carbon-containing compounds in entire cycle. The ultimate aim is to use resources efficiently and minimize net CO2 emission. This holistic view also has ramifications for related fields including petroleum refining production liquid fuels chemicals from coal, methane, CO2, biomass.
Cooperative Reduction Selective redox transformation remains a general challenge in chemical synthesis. All too often, the most readily available precursor to compound must be over-reduced (or over-oxidized) and then carefully coaxed back desired intermediate state. Such is case with synthesis of cyclohexanone, which mass-produced for use preparation nylon: Access by direct reduction phenol plagued rapid addition many hydrogen atoms substrate, producing an alcohol (cyclohexanol) place...
The ionic liquid, (IL) 1,1,3,3-tetramethylguanidinium lactate, can absorb SO2 from simulated flue gas effectively under ambient conditions (see scheme). Absorbed be desorbed vacuum or by heating, and the IL reused. This absorption method might used for cleaning gases that contain SO2.
In the search of alternative resources to make commodity chemicals and transportation fuels for a low carbon future, lignocellulosic biomass with over 180-billion-ton annual production rate has been identified as promising feedstock. This review focuses on state-of-the-art catalytic transformation into value-added fuels. Following brief introduction structure, major pretreatment methods biomass, conversion three main components, i.e., cellulose, hemicellulose lignin, various compounds are...
A support group for ionic liquids: 3-Butyl-1-vinylimidazolium chloride supported covalently on a polymer cross-linked with divinylbenzene gives rise to very active, stable, and selective heterogeneous catalyst 1 the addition of CO2 epoxides (see scheme). Moreover, can be easily separated from products reused.
The common Lewis acid SnCl4 could efficiently convert glucose into 5-hydroxymethylfurfural in 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMim]BF4). New evidence indicated that the formation of five-membered-ring chelate complex Sn atom and may play a key role for HMF, mechanism reaction was proposed. In addition, [EMim]BF4/SnCl4 system also suitable conversion fructose, sucrose, inulin, cellobiose starch.
The development of efficient heterogeneous catalysts for the cycloaddition CO2 with epoxides to produce five-membered cyclic carbonates under mild reaction conditions is great importance. In this work, coupling propylene oxide (PO) carbonate (PC) catalyzed by MOF-5 (metal-organic frameworks) in presence quaternary ammonium salts (Me4NCl, Me4NBr, Et4NBr, n-Pr4NBr, n-Bu4NBr) was studied different conditions. It discovered that and had excellent synergetic effect promoting reaction,...
α-Fe2O3 nanotubes that can be used as chemical sensors (see Figure) are fabricated by a novel carbon nanotube (CNT) templated synthesis. CNTs coated with continuous layer of Fe2O3 nanoparticles the decomposition Fe(NO3)3 in supercritical CO2/ethanol solution. Subsequent removal gives highly sensitive to H2S, which makes them attractive materials for chemiluminescent H2S sensors.
Production of methanol from electrochemical reduction carbon dioxide is very attractive. However, achieving high Faradaic efficiency with current density using facile prepared catalysts remains to be a challenge. Herein we report that copper selenide nanocatalysts have outstanding performance for methanol, and the can as 41.5 mA cm-2 77.6% at low overpotential 285 mV. The selenium in cooperate well formation methanol. higher than those reported up date producing As far know, this first work catalyst.
The solubility of CO2 in choline chloride + urea eutectic mixtures was determined at 313.15 K, 323.15 and 333.15 K under pressures up to 13 MPa. mole ratios selected were 1:1.5, 1:2, 1:2.5. Henry's constants enthalpy solution the gas calculated from data. increased with increasing pressure, is more sensitive pressure low-pressure range. decreased temperature all pressures. negative conditions.
Abstract Efficient electroreduction of carbon dioxide to multicarbon products in aqueous solution is great importance and challenging. Unfortunately, the low efficiency production C 2 limits implementation at scale. Here, we report reduction (acetic acid ethanol) over a 3D dendritic copper-cuprous oxide composite fabricated by situ an electrodeposited copper complex. In potassium chloride electrolyte, applied potential was as −0.4 V vs reversible hydrogen electrode, overpotential only 0.53...
Nanoparticles strung on nanotubes, like a beaded necklace (see Figure), have been synthesized by simple low temperature supercritical solution method. That the crystalline spherical Co3O4 nanoparticles multiwalled carbon nanotubes are step towards high-density integrated nanometer-scale functional devices is demonstrated fabrication of Schottky junction diodes from individual “beaded” nanotubes.
The electrochemical synthesis of chemicals from carbon dioxide, which is an easily available and renewable resource, great importance. However, to achieve high product selectivity for desirable C2 products like ethylene a big challenge. Here we design Cu nanosheets with nanoscaled defects (2-14 nm) the production dioxide. A Faradaic efficiency 83.2% achieved. It proved that can enrich reaction intermediates hydroxyl ions on electrocatalyst, thus promoting C-C coupling formation.
Efficient conversion of fructose to 5-hydroxymethylfurfural is a key step for using carbohydrates produce liquid fuels and value-added chemicals. Here we show that some ionic liquids synthesized from cheap renewable materials are very efficient the HMF. The yield selectivity could be higher than 90% as reaction was conducted in an ethyl acetate/renewable IL biphasic system separation process had no cross-contamination. Moreover, can reused easily.
Herein we report a facile method to synthesize anatase nanocrystals (NCs) with uniform size and shape via microwave-assisted route in ionic liquid. These NCs are highly crystalline, low Ti3+ defect, free of aggregation.
Abstract Developing highly efficient electrocatalysts based on cheap and earth-abundant metals for CO 2 reduction is of great importance. Here we demonstrate that the electrocatalytic activity manganese-based heterogeneous catalyst can be significantly improved through halogen nitrogen dual-coordination to modulate electronic structure manganese atom. Such an electrocatalyst exhibits a maximum faradaic efficiency 97% high current density ~10 mA cm −2 at low overpotential 0.49 V. Moreover,...
Pores and pores: Metal–organic framework (MOF) nanospheres with long-range ordered mesopores, the walls of which are composed microporous structure units, were synthesized in binary solvent systems ionic liquid supercritical CO2. The MOF nanostructure has many potential applications its preparation could easily be applied to MOFs other metal ions ligands.
Lignocellulosic biomass contains about 45% cellulose. Conversion of cellulose and cellulose-derived glucose into value-added chemicals liquid fuels benefits sustainable development our society has received much attention. Water ionic liquids (ILs) are two kinds green solvents. The unusual properties the solvents provide some unique advantages for efficient greener conversion glucose, which have been studied extensively. This review discusses mainly recent progress in water or ILs by...
Cellulose/KI is a very active, selective, stable, and recyclable catalyst for the cycloaddition reactions of CO2 epoxides due to excellent synergetic effect cellulose KI. It found that hydroxyl groups on vicinal carbons play key role high efficiency catalyst.
Abstract Electrochemical reduction of CO 2 to CH 3 OH is great interest. Aerogels have fine inorganic superstructure with high porosity and are known be exceptional materials. Now a Pd−Cu bimetallic aerogel electrocatalyst has been developed for conversion into OH. The current density Faradaic efficiency can as 31.8 mA cm −2 80.0 % over the Pd 83 Cu 17 at very low overpotential (0.24 V). superior performance results from efficient adsorption stabilization radical anion, 0 /Pd II I +Cu /Cu...
Abstract The utilization of compounds from natural sources to prepare functional materials is great importance. Herein, we describe for the first time preparation organic–inorganic hybrid catalysts by using phytic acid as building block. Zirconium phosphonate (Zr‐PhyA) was synthesized reaction and ZrCl 4 obtained a mesoporous material with pore sizes centered around 8.5 nm. Zr‐PhyA used catalyze mild selective Meerwein–Ponndorf–Verley (MPV) reduction various carbonyl compounds, e.g.,...