A5087938685- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Granular flow and fluidized beds
- Zeolite Catalysis and Synthesis
- Mesoporous Materials and Catalysis
- Atmospheric and Environmental Gas Dynamics
- Spectroscopy and Laser Applications
- Cyclone Separators and Fluid Dynamics
- Advanced Photocatalysis Techniques
- Particle Dynamics in Fluid Flows
- Catalytic Processes in Materials Science
- Image and Signal Denoising Methods
- Catalysis and Hydrodesulfurization Studies
- Mineral Processing and Grinding
- Catalysis for Biomass Conversion
- Metal-Organic Frameworks: Synthesis and Applications
- Atmospheric Ozone and Climate
- Fluid Dynamics and Heat Transfer
- Laser Design and Applications
- Thermochemical Biomass Conversion Processes
- Electrical and Bioimpedance Tomography
- Electrospun Nanofibers in Biomedical Applications
- Membrane Separation Technologies
- Solid State Laser Technologies
- Fluid Dynamics and Turbulent Flows
Chinese Academy of Sciences
2015-2025
Columbia University
2020-2025
Guangxi Subtropical Crops Research Institute
2024
Tiangong University
2010-2024
Dalian Institute of Chemical Physics
2011-2023
Dalian National Laboratory for Clean Energy
2017-2023
Anhui Institute of Optics and Fine Mechanics
1996-2023
City University of Hong Kong
2020-2023
University of Nottingham Ningbo China
2023
Ningbo Institute of Industrial Technology
2023
The development of sustainable and environmentally friendly techniques for synthesizing zeolites has attracted much attention, as the use organic templates solvents in hydrothermal synthesis is a major obstacle realizing green ways. Recently, introduction organotemplate-free method allowed avoiding templates, but water solvent was still required; solvent-free routes on other hand beared potential to significantly reduce amount polluted wastewater, were present. In this work, we have...
A thorough investigation of the active titanium species in TS-1 zeolite was conducted by situ UV resonance Raman spectroscopy combined with UV/Vis diffuse reflectance spectroscopy, DFT calculations, and epoxidation experiments. new identified a characteristic band at 695 cm(-1) when excited 266 nm laser line. It is shown that newly found reactions addition to tetrahedrally coordinated species. However, acidity could catalyze ring-opening epoxy products. results lower selectivity toward...
Abstract Single‐unit‐cell Sn‐MFI, with the detectable Sn uniformly distributed and exclusively located at framework sites, is reported for first time. The direct, single‐step, synthesis based on repetitive branching caused by rotational intergrowths of single‐unit‐cell lamellae. self‐pillared, meso‐ microporous zeolite an active selective catalyst sugar isomerization. High yields conversion glucose into fructose lactose to lactulose are demonstrated.
Not just sugar! Lewis-acidic Sn-MWW zeolites are obtained through postsynthesis functionalization of deboronated B-MWW with Sn. These materials highly active, selective, and recyclable catalysts for the conversion triose sugars to methyl lactate (in methanol) lactic acid water). They also demonstrate good performance in hexose sucrose lactate.
Abstract A novel bagasse‐based solid acid catalyst was successfully prepared through sulfonation of incompletely carbonized bagasse. range conditions for producing the were investigated, and optimized catalyst, produced under carbonization at 648 K 0.5 h 423 15 h, showed excellent catalytic activity resulted in around 95 % yield methyl oleate. Its not only substantially greater than that niobic Amberlyst‐15, but also comparable to or superior catalysts made from pure starch glucose,...
The previous descriptions of Opisthotropis maxwelli Boulenger, 1914 and O. andersonii (Boulenger, 1888) were considered imperfect due to the limited number specimens. This may in turn cause a problem for accurate species identification. In our study, boundaries these two investigated using an integrative approach incorporating morphological characters molecular phylogenetic analyses mitochondrial Cyt b gene 26 specimens nine known collected from south-eastern China. Our results surprisingly...
A metal-organic framework (MOF)-based catalyst, chromium hydroxide/MIL-101(Cr), was prepared by a one-pot synthesis method. The combination of hydroxide particles on and within Lewis acidic MIL-101 accomplishes highly selective conversion glucose to fructose in the presence ethanol, matching performance optimized Sn-containing zeolites. Differently from zeolites, NMR spectroscopy studies with isotopically labeled molecules demonstrate that isomerization this proceeds predominantly via proton...
We have demonstrated here for the first time that high-silica ferrierite zeolite, designated as ZJM-2, is successfully synthesized by an induction of CDO-structure zeolite building units in absence organic templates. The resulting ZJM-2 has good crystallinity, high surface area, similar crystals shape, only tetrahedral Al3+ species, and abundant acidic sites.
Developing efficient and earth-abundant electrocatalysts for the oxygen evolution reaction (OER) is still a big challenge. Here, perovskite La0.4Sr0.6Ni0.5Fe0.5O3 nanoparticles were rationally designed synthesized by sol-gel method with an average size around 25 nm, it has remarkable intrinsically activity stability in 1 M KOH solution. Compared other (LaNiO3, LaFeO3, LaNi0.5Fe0.5O3) catalysts, exhibits superior OER performance, smaller tafel slope lower overpotential. The high...
Tulip-like MoS<sub>2</sub> with a single sheet tapered structure anchored on N-doped graphene substrates <italic>via</italic> C–O–Mo bonds shows excellent capacity retention for sodium storage.
Piecing together the puzzle: The synthesis mechanism of AlPO-5 was studied using in situ UV Raman spectroscopy combination with Fenton reaction. results reveal molecular-level insights into role template channel formation as well identities building blocks framework formation.
The catalytic performance of TS-1 zeolite greatly depends on the types titanium species and their concentrations in zeolite. Coupled with UV/vis spectroscopy, we present a UV resonance Raman spectroscopic investigation evolution during crystallization It is found that small portion Ti leaches from solid phase into liquid phase. "missing" addition to framework assembly process identified as isolated "TiO6" species, due effect excited at 266 nm. formation mechanisms relation synthesis are...
The planning, design, operation, control and scientific research of power systems all require a variety simulation analysis. Thus grid analysis is fundamental supporting technology large-scale grids. In analysis, in addition to calculations, there are many links for decision-making, relying on specialists. introduction advanced artificial intelligence provides new method improve the efficiency accuracy Nevertheless, related technologies face great deal challenges due complexity data,...
Abstract Stable suspensions of zeolite nanosheets (3 nm thick MFI layers) were prepared in ethanol following acid treatment, which partially removed the associated organic structure‐directing agent. Nanosheets from these could then be dispersed at air–water interface and transferred to silicon wafers using Langmuir–Schaefer deposition. Using layer‐by‐layer deposition, control on coating thickness was demonstrated. In‐plane X‐ray diffraction (XRD) revealed that deposited contract upon...
Abstract Electrical capacitance tomography has been widely used to obtain key hydrodynamic parameters of gas–solid fluidized beds, which is normally realized by first reconstructing images and then analyzing these images. This indirect approach time‐consuming hence difficult for on‐line monitoring. Meanwhile, considering recurrence similar flow patterns in most calculations are repetitive should be avoided. Here, we develop a machine learning address problems. First, superficial gas velocity...
Abstract UV–Raman and NMR spectroscopy, combined with other techniques, have been used to characterize crystallization of zeolite A. In situ spectroscopy shows that the starting gel for A contains a lot four‐ring (4R) building units appearance six‐ring (6R) blocks is signal crystal formation. 29 Si results suggest double (D4R) rich during both α β cages appear. 27 Al indicate absence (2Si) species in gel, suggesting single 4R gel. Furthermore, composition analysis solid liquid samples rather...
The flow and mixing, flame length, width, volume, stability behaviors of DME, methane, LPG jet diffusion flames are comparatively studied. Five fuel nozzle diameters (df = 1.12, 1.98, 3.30, 4.20, 6.11 mm) a wide range velocities (uf) ranging from laminar regime (LR) to blow-out (BO) were included investigate their effects on the behavior systematically. For each flame, with increase in df, both transitional BO Reynolds numbers (Ref) increase; corresponding uf decreases accordingly. Ref DME...
Chinese Loess Plateau plays an important role in carbon balance of terrestrial ecosystems. Continuous measurement CO2 fluxes cropland ecosystem is great significance to accurately evaluate the sequestration potential and better explain cycle process this region. By using eddy covariance system we conducted a long-term (from Sep 2009 Jun 2010) rain-fed winter wheat field elaborated responses environmental factors. The results show that has distinct seasonal dynamics fluxes. total net exchange...
Abstract Pillared Sn‐MWW (Sn‐MWW(SP)‐SSE) was prepared through a solid‐state‐exchange (SSE) route. The pillared structure inherited from B‐MWW, and Sn inserted in the framework by boron leaching with tin tetrachloride pentahydrate. Sn‐MWW(SP)‐SSE sites exhibits Lewis acidity good catalytic performance for Baeyer–Villiger oxidation, mono‐ disaccharide isomerizations.