Supersonic gas flow impacting approach for solid-state synthesis at room-temperature: Temperature measurement

2020 ◽  
Vol 34 (14n16) ◽  
pp. 2040100
Author(s):  
Qiuting Guo ◽  
Zheng Guo ◽  
Yang Tao ◽  
Zhao Zhang ◽  
Jun Lin ◽  
...  
Keyword(s):  
Solid State ◽  
Kinetic Energy ◽  
Gas Flow ◽  
Room Temperature ◽  
Solid Particles ◽  
Solid State Synthesis ◽  
Average Particle ◽  
Solid Phase Reaction ◽  
Phase Reaction ◽  
Supersonic Gas Flow

Solid-state synthesis based on supersonic gas flow impingement at room-temperature is an alternative approach to traditional mechanochemical preparation. The supersonic airflow is generated by a convergent-diffusion nozzle with a design Mach number of 3.0. The solid material particles from the suction pipe in the coaxial nozzle can get very high kinetic energy in microseconds. Then the particles impact the target or collide with each other to achieve the transfer of kinetic energy to thermal or chemical energy. We utilize the infrared technology to successfully measure the solid particles’ temperature while they impact the target after gathered energy from the supersonic air gas. The results show that the average temperature of the silicon particles with an average particle diameter of 150 [Formula: see text]m after impacting the target is about [Formula: see text]C, and some of the temperature exceed [Formula: see text]C. It dedicates that the kinetic energy of the particles during the collision translate into internal energy indeed. The work of this paper lays a good foundation for further research on the low-temperature solid-phase reaction processes.

Solid-state synthesis of amorphous iron(III) phosphate at room temperature and its absorption properties for Hg(II) and Ag(I) ions

2007 ◽  
Vol 61 (17) ◽  
pp. 3755-3757 ◽  
Author(s):  
Ping Yin ◽  
Yucai Hu ◽  
Yanzhi Sun ◽  
Yingxia Yang ◽  
Chunnuan Ji ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Solid State Synthesis ◽  
Absorption Properties ◽  
Amorphous Iron

Solid-state Synthesis of Aryl 2-Nitrophenyl Ureas

2003 ◽  
Vol 2003 (4) ◽  
pp. 220-221 ◽  
Author(s):  
Jing Li ◽  
Yu-lu Wang ◽  
Ting Sun
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Solid State Synthesis ◽  
First Time

A simple and efficient solid-state synthesis for aryl 2-nitrophenyl ureas at room temperature is described for the first time.

Microwave-assisted solid-state synthesis of hydroxyapatite nanorods at room temperature

2005 ◽  
Vol 40 (23) ◽  
pp. 6311-6313 ◽  
Author(s):  
Jie Ming Cao ◽  
Jie Feng ◽  
Shao Gao Deng ◽  
Xin Chang ◽  
Jun Wang ◽  
...  
Keyword(s):  
Solid State ◽  
Room Temperature ◽  
Solid State Synthesis ◽  
Microwave Assisted

Phase Formation, Crystal Structure and Ion Conductivity of Silver Antimonate-Molybdates

2020 ◽  
Vol 20 (7) ◽  
pp. 4597-4600
Author(s):  
Yu. A. Lupitskaya ◽  
D. A. Kalganov ◽  
L. Yu. Kovalenko ◽  
F. A. Yaroshenko
Keyword(s):  
Solid Phase ◽  
Rietveld Method ◽  
Structural Parameters ◽  
Average Particle Size ◽  
Structural Disorder ◽  
Synthesis Temperature ◽  
Average Particle ◽  
Solid Phase Reaction ◽  
Phase Reaction ◽  
Pyrochlore Type

The features of the formation of compounds based on silver antimonate obtained in the AgNO3–Sb2O3–MoO3 system by the solid-phase reaction were investigated. For a synthesis temperature of 1023 K, a homogeneous concentration region of the Ag2−xSb2−xMoxO6 solid solution with a structure of the defective pyrochlore type in the range of 0.0 ≤ x ≤ 2.0 was detected. The Rietveld method, within the constraints of the Fd-3m space group, was used to refinement of X-ray diffraction data, specify the structural parameters of powders, and the correlation of structural disorder with their electrically conductive properties. Relative density and average particle size for ceramic samples sintered at 1223 K were determined using scanning electron microscopy.

Fine-Particle Lithium Iron Phosho-Olivine Synthesized by a Novel Modified Solid-State Reaction

2007 ◽  
Vol 336-338 ◽  
pp. 524-525
Author(s):  
Rong Yang ◽  
Xiao Ping Song ◽  
Xiu Fen Pang ◽  
Ming Shu Zhao ◽  
Fei Wang
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Room Temperature ◽  
Specific Capacity ◽  
Solid State Reaction Method ◽  
Phase Reaction ◽  
Two Phase ◽  
Reaction Proceeds ◽  
Initial Charge ◽  
Xrd Patterns

In this paper, homogeneous and well-crystallized LiFePO4 was synthesized by a novel modified solid-state reaction method following by heat treatment at relatively low temperature of 500°C in Ar. No impurities are detected in the XRD patterns. The initial charge specific capacity and discharge specific capacity reach 157.2mAhg-1 and 152.6mAhg-1 respectively at 20°C. Voltage plateaus at around 3.45V were observed in all the curves, indicating that the charge and discharge reaction proceeds as a two-phase reaction. The initial charge specific capacity is 157.2mAhg-1 at 0.1C rate, i.e. 92% of the theoretical capacity, and specific capacity decreases slightly after 100 circles at room temperature.

Room Temperature Solid-State Synthesis of a Conductive Polymer for Applications in Stable I2-Free Dye-Sensitized Solar Cells

ChemSusChem ◽  
2012 ◽  
Vol 5 (11) ◽  
pp. 2173-2180 ◽  
Author(s):  
Byeonggwan Kim ◽  
Jong Kwan Koh ◽  
Jeonghun Kim ◽  
Won Seok Chi ◽  
Jong Hak Kim ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Room Temperature ◽  
Dye Sensitized Solar Cells ◽  
Conductive Polymer ◽  
Solid State Synthesis ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Fabrication of Lithium Silicate Doped with Lithium Titanate by Solid-State Reaction and its XRD Study

2012 ◽  
Vol 624 ◽  
pp. 200-203
Author(s):  
Yu Tian Wang ◽  
You Dong Cao ◽  
Jin Hu ◽  
Wei Jun Zhang ◽  
Da Ping Wu ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Solid Phase ◽  
Raw Materials ◽  
Xrd Analysis ◽  
Lithium Titanate ◽  
Lithium Silicate ◽  
Solid Phase Reaction ◽  
Phase Reaction ◽  
Scanning Calorimetry

Fabrication of lithium silicate powder containing lithium titanate by solid phase reaction method. LiFabrication of lithium silicate powder doped with lithium titanate by solid-state reaction. Take lithium carbonate, silicon dioxide and titania as raw materials and then these powders were mixed according to the different ratios and grinded in an agate mortar for 15 min. And then the mixture were dried at 80°C. Finally, the samples were sintered in vacuum tube furnace at 750, 800, 850 and 900°C for 2h. Thermogravimetric analysis, differential scanning calorimetry and XRD analysis were carried out systematically in this paper. The reaction process and mechanism at different temperatures and the effect of the different ratios and sintering temperature were discussed. Experimental results showed that lithium titanate component increased with increasing amount of titanium dioxide. While the mixture were sintered at 900°C for 2h, there would have lithium silicate and lithium titanate phase.

Synthesis of Three Layer NaxCoO2 (x=0.3, 0.5, 0.6, 0.75, 1.0) and Superconductivity in Three Layer Na0.3CoO2•1.3H2O

2004 ◽  
Vol 848 ◽  
Author(s):  
M.L. Foo ◽  
T. Klimczuk ◽  
L. Li ◽  
N.P. Ong ◽  
R.J. Cava ◽  
...  
Keyword(s):  
Solid State ◽  
Cobalt Oxide ◽  
Room Temperature ◽  
Solid State Synthesis ◽  
Stacking Sequence ◽  
Sodium Cobalt Oxide ◽  
Conventional Solid State Synthesis

ABSTRACTThe synthesis of three layer sodium cobalt oxide, NaxCoO2 (x=0.3, 0.5, 0.6, 0.75 and 1.0) is reported. For x=0.6, 0.75, and 1.0, conventional solid-state synthesis was employed. x=0.3 and 0.5 were obtained via oxidative deintercalation of sodium at room temperature. x=0.3 can be hydrated to Na0.3CoO2•1.3H2O which is superconducting with a Tc of 4.3 K. Although having the same chemical stiochiometry as the previously reported two layer superconductor, it has a different stacking sequence of CoO2 layers making it structurally distinct. Crystals of three layer NaCoO2 show triangular morphology compared to hexagonal morphology for two layer Na0.7CoO2.

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