Pulsed wire discharge for nanosize powder synthesis

1998 ◽  
Vol 26 (5) ◽  
pp. 1498-1501 ◽  
Author(s):  
Weihua Jiang ◽  
K. Yatsui
Keyword(s):  
Powder Synthesis ◽  
Pulsed Wire Discharge ◽  
Nanosize Powder

scholarly journals Nanosized Powder Synthesis by Pulsed Wire Discharge in High-Speed Gas Flow

2005 ◽  
Vol 125 (9) ◽  
pp. 727-732 ◽  
Author(s):  
Yoshinori Tokoi ◽  
Tadashi Ikeuchi ◽  
Hisayuki Suematsu ◽  
Weihua Jiang ◽  
Kiyoshi Yatsui
Keyword(s):  
High Speed ◽  
Gas Flow ◽  
Nanosized Powder ◽  
Powder Synthesis ◽  
Pulsed Wire Discharge

Purification of Aluminum Nitride Nanosize Powder Synthesized by Pulsed Wire Discharge

2013 ◽  
pp. 61-68
Author(s):  
C. Cho ◽  
Y. Kinemuchi ◽  
T. Suzuki ◽  
H. Suematsu ◽  
W. Jiang ◽  
...  
Keyword(s):  
Aluminum Nitride ◽  
Pulsed Wire Discharge ◽  
Nanosize Powder

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Mesoporous Metal-Organic Framework MAF-6

2019 ◽  
Author(s):  
Timothée Stassin ◽  
Ivo Stassen ◽  
Joao Marreiros ◽  
Alexander John Cruz ◽  
Rhea Verbeke ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Metal Organic Framework ◽  
Chemical Vapor ◽  
Uptake Capacity ◽  
Powder Synthesis ◽  
Crystalline Films ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
First Time ◽  
Organic Framework

A simple solvent- and catalyst-free method is presented for the synthesis of the mesoporous metal-organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤ 100 °C. By translating this method to a chemical vapor deposition (CVD) protocol, mesoporous crystalline films could be deposited for the first time entirely from the vapor phase. A combination of PALS and Kr physisorption measurements confirmed the porosity of these MOF-CVD films and the size of the MAF-6 supercages (diam. ~2 nm), in close agreement with powder data and calculations. MAF-6 powders and films were further characterized by XRD, TGA, SEM, FTIR, PDF and EXAFS. The exceptional uptake capacity of the mesoporous MAF-6 in comparison to the microporous ZIF-8 is demonstrated by vapor-phase loading of a molecule larger than the ZIF-8 windows.

Improvements in scandate powder synthesis

2018 ◽  
Author(s):  
Bernard Vancil ◽  
Charles Osborne ◽  
Allen Vancil ◽  
Wayne Ohlinger ◽  
Michael Green ◽  
...  
Keyword(s):  
Powder Synthesis

scholarly journals Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Large-Pore Metal–Organic Framework MAF-6

2020 ◽  
Vol 32 (5) ◽  
pp. 1784-1793 ◽  
Author(s):  
Timothée Stassin ◽  
Ivo Stassen ◽  
João Marreiros ◽  
Alexander John Cruz ◽  
Rhea Verbeke ◽  
...  
Keyword(s):  
Thin Films ◽  
Metal Organic Framework ◽  
Solvent Free ◽  
Powder Synthesis ◽  
Large Pore ◽  
Metal Organic ◽  
Organic Framework

Nanozirconium Carbide Powder Synthesis via Carbothermal Route

2013 ◽  
Vol 334-335 ◽  
pp. 381-386 ◽  
Author(s):  
F. Arianpour ◽  
F. Kazemi ◽  
Hamid Reza Rezaie ◽  
A. Asjodi ◽  
J. Liu
Keyword(s):  
Carbon Sources ◽  
Zirconium Carbide ◽  
Carbide Powder ◽  
Carbide Formation ◽  
Matrix Composites ◽  
Powder Synthesis ◽  
High Refractoriness ◽  
Heat Treated ◽  
Crystallite Sizes ◽  
20 Nm

Zirconium carbide (ZrC) has extended application in many ceramic and metal matrix composites especially used for ultra high temperature conditions. The synthesis of zirconium carbide powder is costly and difficult because of its high refractoriness and chemically inert properties. In this research, the synthesis of zirconium carbide nanopowder at low temperature via carbothermal reduction route was investigated according to thermodynamic data. The starting materials were zirconium acetate and sucrose as zirconium and carbon sources, respectively. After preparation of different carbon/zirconium ratio containing precursors, the dried precursors were heat treated at 1400°C and vacuum atmosphere. Also the ZrC formation was followed by thermal analysis of the produced precursors. The phase evolutions and microstructural studies were carried out using X-ray diffraction and scanning electron microscopy. The results showed that it is possible to synthesis zirconium carbide nanopowder with round shape and crystallite sizes smaller than 20 nm at low temperatures. Also according to thermodynamic calculations, it was concluded that by applying vacuum condition, the zirconium carbide formation can occur at less than 1000°C which is very effective on the size reducing of produced ZrC nanopowders.

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