A5029140866- Asymmetric Hydrogenation and Catalysis
- Environmental remediation with nanomaterials
- Catalytic Processes in Materials Science
- Nanomaterials for catalytic reactions
- Organometallic Complex Synthesis and Catalysis
- Electrocatalysts for Energy Conversion
- X-ray Diffraction in Crystallography
- Advanced battery technologies research
- Chemical Synthesis and Analysis
- Crystallization and Solubility Studies
- Catalysis and Oxidation Reactions
- Synthetic Organic Chemistry Methods
- Metal-Organic Frameworks: Synthesis and Applications
- Carbon dioxide utilization in catalysis
- Catalytic C–H Functionalization Methods
- Catalysts for Methane Reforming
- Electrochemical Analysis and Applications
- Boron Compounds in Chemistry
- Transition Metal Oxide Nanomaterials
- Advanced oxidation water treatment
- Surface Chemistry and Catalysis
- Blockchain Technology Applications and Security
- Conducting polymers and applications
- Nonlinear Optical Materials Research
- Membrane Separation Technologies
Ho Chi Minh City University of Science
2011-2025
Vietnam National University Ho Chi Minh City
2012-2024
Kyungpook National University
2002-2009
Nickel-iron (NiFe) nanoparticles supported on activated carbon were synthesized using NaBH4 as a reducing agent and PVP stabilizing to prevent the from agglomerating or oxidizing. The entire process is carried out under an inert atmosphere further oxidation ensure purity of NiFe nanoparticles. physicochemical properties resulting NiFe/C samples analyzed SEM, TEM, BET, EDX, XRD techniques. nanoparticles, ranging 3-11 nm, evenly dispersed carbon, exhibiting specific surface area 850 m2/g. A...
A series of chiral (iminophosphoranyl)ferrocenes (1-3) are highly efficient ligands for Rh- and Ir-catalyzed hydrogenation a number unfunctionalized olefins; almost perfect enantiomeric excesses (up to 99% ee) have been achieved under mild reaction conditions.
A series of new chiral (iminophosphoranyl)ferrocenes, {η5-C5H4-(PPh2N-2,6-R2-C6H3)}Fe{η5-C5H3-1-PPh2-2-CH(Me)(Y)} (1a, Y = NMe2, R Me; 1b, iPr; 1c, OMe, iPr), {η5-C5H4-(PPh2N-2,6-R2-C6H3)}Fe{η5-C5H3-1-(PPh2N-2,6-R2-C6H3)-2-CH(Me)(Y)} (2a, Me, NMe2; 2b, iPr, NMe2,; 2c, OMe), and (η5-C5H5)Fe{η5-C5H4-1-PR2-2-CH(Me)NPPh3} (3a, Ph; 3b, C6H11), have been prepared from the reaction 1,1'-bis(diphenylphosphino)-2-[(dimethylamino)ethyl]ferrocene with aryl azides (1 2) phosphine dichlorides (R3PCl2)...
Abstract Different types of zeolite including Zeolite A are prepared from natural kaolin originated in Vietnam. Raw was collected Phu Tho, Vietnam, underwent metakaolization at 650 °C within 2 hours and alkalination with NaOH to synthesize various zeolitic samples. Various characterization techniques were performed, X‐ Ray Diffraction, Fourier‐transform infrared spectroscopy, Scanning Electron Microscopy. concentrations utilized study the difference zeolite. Nickel‐doped samples different...
Using a solvent‐free method, zeolite NaA was synthesized from raw kaolin, collected Binh Duong, Vietnam. The synthesis involved thermal hydration under an alkaline solution. catalysts based on binary nickel‐silver nanoparticles were prepared through in situ reduction of metal salts aqueous zeolitic suspension using sodium borohydride as reducing agent. fully characterized by various techniques such X‐ray diffraction (XRD), Fourier transform infrared (FT‐IR), scanning electron microscopy...
Nickel nanoparticles were successfully synthesized via the reduction of nickel salt using ethylene glycol (EG) and sodium borohydride (NaBH4) as reducing agents. These then loaded on supports Ni-X (X = vanadium phosphorus oxides (VPO), TiO2, ZnO) in high loading yield. The optical properties these catalysts characterized by UV-vis spectroscopy, structure was studied powder X-ray diffraction (PXRD), distribution Ni particles X transmission electron microscopy (TEM), specific surface area...
The reaction of 1,2-ferrocenediylazaphosphinines (1a, R1 = H; 1b, Me; 1c, Ph) with M(CO)6 (M Mo, W), MX(CO)5 Mn, Re; X Br, Cl), and [Pd(η3-C3H5)Cl]2 shows a strong tendency to adopt an unusual chelating bidentate coordination through nitrogen the carbonyl oxygen, yielding M(η2-N,O)(CO)4 (2, M Mo; 3, M(η2-N,O)(X)(CO)3 (6, Br; 7, Re, [Pd(η2-N,O)(η3-C3H5)]BF4 (after treatment AgBF4) (8), respectively. X-ray crystallographic structure determinations 3a (R1 H) 8a show formation five-membered...
A series of new chiral [iminophosphoranyl]ferrocenes, {<TEX>${\eta}^5-C_5H_4-(PPh_2=N-2,6-R_2-C_6H_3)$</TEX>}Fe{<TEX>${\eta}^5-C_5H_3-1-PPh^2-2-CH(Me)NMe_2$</TEX>} (1: R = Me, <TEX>$^iPr$</TEX>), {<TEX>${\eta}^5{-C_5H_4-(PPh_2=N-2,6-R_2}^1-C_6H_3)$</TEX>}Fe{<TEX>${\eta}^5-C_5H_3-1-(PPh_2=N-2,6-R_2-C_6H_3)-2-CH(Me)R_2$</TEX>} (2: <TEX>$R^1\;=\;Me,\;^iPr;\;R^2\;=\;NMe_2$</TEX>, OMe), and <TEX>$({\eta}^5-C_5H_5)Fe$</TEX>{<TEX>${\eta}^5-C_5H_4-1-PR_2-2-CH(Me)N=PPh_3$</TEX>} (3:R Ph,...
Carbon-supported nanocatalysts palladium-vanadium-cobalt (PdVCo) were synthesized via ethylene glycol (EG) reduction reaction and NaBH 4 -assisted reduction. The electrocatalytic performance for alcohol oxidation in alkaline solutions was investigated. XRD EDX results confirmed the incorporation of V Co with Pd lattice to form ternary PdVCo a single phase. EG process exhibited highly dispersed nanoparticles uniform size, electrochemical surface area (ECSA) determined by cyclic voltammetry 1...
o-Carborane-based chiral phosphinooxazoline (Cab-PHOX) ligands were synthesized for the first time and applied to iridium- rhodium-catalyzed hydrogenation of unfunctionalized functionalized olefins with an enantioselectivity up 98% 96%, respectively. The modularity Cab-PHOX is highlighted by facile preparation a variety sterically electronically different ligands.
Abstract In this work, metal nanoparticles were successfully synthesized through the reduction of salts using reducing agents such as: ethylene glycol (EG) and sodium borohydride (NaBH 4 ). These impregnated into supports M‐X (M = Ni, Pd; X Bent, C, Zeolite, Al 2 O 3 ) in high yield. The physio‐chemical properties these catalysts characterized by various techniques as UV‐Vis spectroscopy, powder X‐ray diffraction (PXRD), Transmission electron microscopy (TEM) specific surface area was...
Introduction: Chlorophenols (CPs) have become prevalent in the manufacture of herbicides, fungicides, pesticides, insecticides, pharmaceuticals, and dyes, contributing significantly to water pollution. Addressing this challenge, various treatment methods such as incineration, electrochemistry, photochemistry, biotechnology, catalytic hydrodechlorination been explored reduce toxic chlorophenol contaminants. Hydrodechlorination stands out an efficient technique for removal chlorine atoms. The...
The synthesis and catalytic application of a new class planar chiral ferrocenes, 1,2-ferrocenediylazaphosphinines (1 2) are described. They powerful ligands for the copper(I)-catalyzed asymmetric cyclopropanation range alkenes with diazo esters to exhibit an exceptionally high degree diastereoselectivity(~100% de) in favor trans isomers, regardless structure olefins compounds. Comparative studies between 1 2 reveal that former works better terms diastereocontrol. In contrast, however,...
In this work, a UV absorber compound (E)-2-(((4-(benzyloxy)phenyl)imino)methyl)phenol was synthesized by microwave method using two steps protocol. the first step, α-(4-hydroxyphenylimino)-o-cresol (1) from 4-aminophenol and salicylaldehyde circulating under heating at 60 oC for 8 minutes, reaction yield reached 82.91 %. second step (2) precursor benzyl bromide 80 3 25.08 The overall synthesis of 2 20.79 molecular structures product were analysed high performance liquid chromatography - mass...
Vanadium phosphorus oxide catalysts were prepared by conventional and microwave irradiation method. Both methods generated high yield (> 90%). Nevertheless, VPO via method appears to have different surface morphology from that of the All show excellent activities on hydrocarbon combustion reaction (up 100%).
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Silver nanoparticles were simply synthesized via the reduction of silver salt using ascorbic acid as reducing agents. These then embedded on supports X (X = Bent, C, ZnO, Zeolit, and Al2O3) in high yield. The optical property these catalysts was characterized by UV-Vis spectroscopy, structure Ag-X studied Powder Ray Diffraction (PXRD), distribution Ag particles Transmission Electron Microscopy (TEM), specific surface area evaluated N2 adsorption isotherms analysis at 77K. All results...
Introduction: Iron-based nanocatalysts are known as a new generation heterogeneous Fenton catalyst, replacing the traditional catalyst system which has many disadvantages in experimental processes and industrial applications. In this study, we focused on preparation of iron nanoparticles their use when embedded supports, well tested catalytic activity by modified Fenton-type oxidation methylene blue (MB) substrate.
 Method: Scanning Electron Microscope (SEM), Transmission Microscopy...
Transfer hydrogenation is one of the reactions high industrial application and copper catalyst widely used in variety hydrgenated substrates. Unfortunately, these hydrogenated processes were usually performed at temperature pressure as well concentration catalyst. In this study, we have tried to reduce dangerous condition by using nanoparticles catalytic activity will be evaluated via transfer benzaldehyde. Besides, successful prepared reduction between CuSO4.5H2O NaBH4 presence PVP. All...