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Supercritical Hydrothermal Synthesis of Inorganic Nanomaterials
2019Nanomaterials are always at the leading emerging area of material and nanotechnology. Especially in this age, the ever-increasing population in the world makes energy, chemicals and other resource efficiency particularly important in sustaining concept [1].
Shuzhong Wang +8 more
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Synthesis of cobalt nanoparticles in supercritical methanol
Materials Chemistry and Physics, 2010Abstract Cobalt nanoparticles with a face-centered cubic (fcc) structure were synthesized by the reduction of Co(NO 3 ) 2 in supercritical methanol. The reduction of Co(NO 3 ) 2 to fcc Co was completed within 15 min at 400 °C and 300 bar. The reduction mechanism was investigated by varying the reaction temperature (200–400 °C) and the reaction time
Nae Chul Shin +4 more
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Submicronic particles synthesis by a supercritical way
High Pressure Research, 2001Abstract The chemical transformation of metallic precursors in a supercritical fluid is a new route for obtaining nanometric homogeneous powders. In this paper we present a technique to produce metal, oxide or nitride submicronic particles, with a spherical morphology and mean diameters from a few microns to a few tens of nanometers.
Vincent Pessey +5 more
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Investigating the Synthesis Potential in Supercritical Water
Chemical Engineering & Technology, 1999In order to investigate the synthesis potential of supercritical water (SCW), hydration and dehydration reactions as well as hydrolyses of various model compounds (alcohols, esters, nitriles, amides) were carried out under sub- and supercritical conditions.
Petra Krammer +2 more
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Supercritical phase Fischer-Tropsch synthesis
Chemical Engineering Science, 1990Abstract Fischer-Tropsch synthesis reaction was conducted in a supercritical fluid medium using a fixed bed reactor. Although the rate of the reaction and the diffusion of reactants were slightly lower than those in the gas phase reaction, the removal of reaction heat and waxy products from the catalyst surface were much more effective than those in ...
Kohshiroh Yokota +2 more
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Supercritical combustion synthesis of titanium nitride
Symposium (International) on Combustion, 1996To increase the interstitial mass loading of nitrogen for enhanced product yield in the self-propagating, high-temperature synthesis (SHS) of metallic nitrides, the synthesis was conducted in cryogenic nitrogen at supercritical states just above the critical point. This state regime has the unique characteristic that the density increases significantly
K. Brezinsky +3 more
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Synthesis of nanocrystalline SnO2 in supercritical water
Journal of Nanoparticle Research, 2006Nanocrystalline SnO2 was synthesized in supercritical water at 385–415°C and 30 MPa (38–106 s residence time) in a tubular flow reactor from an aqueous solution of 0.1–0.4 M SnCl4. The conversion rate was between 53 and 81%, but increased to 97.8% when 0.1 M NaOH was added.
Zhen Fang +5 more
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Supercritical Flow Synthesis of TiO2
2014A new, up-scaled supercritical flow synthesis apparatus has been constructed in Aarhus. A module based system allows for a range of parameter studies with improved parameter control. The dual-reactor setup enables both single phase and core-shell nanoparticle synthesis.
Hellstern, Henrik Christian +4 more
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