A5101714492- Extraction and Separation Processes
- Metal Extraction and Bioleaching
- Catalytic Processes in Materials Science
- Metallurgical Processes and Thermodynamics
- Advanced ceramic materials synthesis
- Luminescence Properties of Advanced Materials
- Recycling and Waste Management Techniques
- Magnesium Oxide Properties and Applications
- Magnesium Alloys: Properties and Applications
- Porphyrin and Phthalocyanine Chemistry
- Hydrogen Storage and Materials
- Advanced materials and composites
- Crystallization and Solubility Studies
- Catalysis and Hydrodesulfurization Studies
- Iron and Steelmaking Processes
- Intermetallics and Advanced Alloy Properties
- Quantum Dots Synthesis And Properties
- Titanium Alloys Microstructure and Properties
- Molten salt chemistry and electrochemical processes
- Metal and Thin Film Mechanics
- Thermal and Kinetic Analysis
- Silicon and Solar Cell Technologies
- Molecular Sensors and Ion Detection
- Nanocluster Synthesis and Applications
- Selenium in Biological Systems
Kunming University of Science and Technology
2015-2024
AbbVie (United States)
2024
Yunnan Metallurgical Group (China)
2011-2023
Kunming University
2018
Kunming Metallurgical Research Institute
2011-2015
Chinese Academy of Sciences
2009
Illinois State University
2002-2004
Silicon carbide nanowires have been synthesized at 1400 degrees C by carbothermic reduction of silica with bamboo carbon under normal atmosphere pressure without metallic catalyst. X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, transmission microscopy and Fourier transformed infrared spectroscopy were used to characterize the silicon nanowires. The results show that a core-shell structure grow along <111> direction. diameter is about 50-200 nm length from...
A series of nine porphyrin analogues have been synthesized using the "3 + 1" variant on MacDonald condensation. Tripyrrane-type systems with a centrally unsubstituted pyrrole, furan, or thiophene ring were prepared conventional methods, and these condensed indene-1,3-dicarbaldehyde, 5-formylsalicylaldehyde, 3-hydroxy-2,6-pyridinedicarbaldehyde in presence TFA to generate benzocarba-, oxybenzi-, oxypyriporphyrins, respectively. The furan-containing proved be highly basic could only isolated...
In present work, we investigate production of magnesium by carbothermic reduction under vacuum conditions. The process was divided into two parts, one is process, and the other condensation process. experimental results revealed that during gas–solid reaction between MgO CO not occurred at a temperature pressure 1723 K 30–100 Pa respectively. So main MgO(s) + C(s) = Mg(g) CO(g) (under vacuum) type belonged to solid–solid reaction. Condensation Process, according contrast analysis, quality...
Benzocarbaporphyrins 4 were found to undergo regioselective oxidations with ferric chloride in methanol, ethanol, isopropyl alcohol, or ethylene glycol give bridged benzo[18]annulene ketal derivatives 5 excellent yields. These polar generally isolated a monoprotonated form and the corresponding free bases appeared be relatively unstable. Addition of TFA resulted formation spectroscopically distinct dications. The ketals highly diatropic nature, showing internal alkoxy substituents upfield...
Two new benzocarbaporphyrins with four or five alkyl substituents have been synthesized by the "3 + 1" MacDonald methodology. At lower temperatures, proton NMR spectrum of asymmetrically substituted carbaporphyrin 8 gave two NH resonances, while 9, which retains a plane symmetry, only one resonance this kind. As no additional peaks were seen for remaining protons, these data strongly support proposal that single tautomer predominates in solution where protons flank interior CH....
Modified tripyrranes incorporating furan and thiophene rings were found to condense with benzene, pyridine indene dialdehydes give a series of novel porphyrin analogues, including thia- oxa-carbaporphyrins; the latter readily forms nickel(II) palladium(II) organometallic complexes.
Huge amounts of Au and Ag are recovered from the hazardous waste lead anode slime. The conventional extraction precious metals slime is based on pyrometallurgical electrolytic processes, which seriously conditioned by separation harmful elements As Sb. In this paper, an innovative efficient oxidation–vacuum volatilization–carbon reduction process was proposed to separate enrich Before vacuum volatilization, selective oxidation performed. Then, volatilization carbon were used obtain a gold-...
Abstract The Si-B binary system was thermodynamically assessed and described using the CompuTherm Pandat software. solution phases, including Liquid, diamond-Si β-B were treated as substitutional of which Gibbs energies expressed with Redlich-Kister polynomial functions. Meanwhile, compounds, SiB3, SiB6, SiBn, modeled stoichiometric compounds. thermodynamic parameters formulating various phases obtained equilibrium transition discussed. existent forms for in MG-Si melt forecast.