Results 251 to 260 of about 5,336,875 (295)
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Decomposition of aniline in supercritical water
Journal of Hazardous Materials, 2002The decomposition of aniline in supercritical water (SCW) was studied. Experiments were performed at various temperatures, pressures, residence times, dosage of oxidant H2O2 and initial aniline concentrations to investigate their effect on the destruction efficiency. Manganous sulfate and ferrous sulfate were screened out during the experiment to study
Xin-Hua, Qi +3 more
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Gasification of cyanobacterial in supercritical water
Environmental Technology, 2014Cyanobacterial collected from eutrophic freshwater lakes constituted intractable waste with a rich algae biomass content. Supercritical water gasification (SCWG) was proposed to treat the cyanobacterial and to produce hydrogen for energy. The H 2 yield reached 2.92 mol/kg at reaction conditions of 500 °C, 30 min and 22 MPa; this yield accounted for 26%
Huiwen, Zhang +3 more
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Valeronitrile Hydrolysis in Supercritical Water
ChemSusChem, 2010AbstractNitriles act as important intermediates for the chemical industry and are accessible on a large scale through hydrocyanation or ammonoxidation. Nitrile hydrolysis yields amides and acids used in various applications. The conventional nitrile hydrolysis process relies on stoichiometric amounts of mineral acid or base which inherently deliver ...
Michael, Sarlea +3 more
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Line of percolation in supercritical water
The Journal of Chemical Physics, 2005The percolation transition of the hydrogen-bonded clusters of molecules is investigated in supercritical water by Monte Carlo computer simulations. Simulations have been performed at four thermodynamic state points located above the supercritical extension of the vapor-liquid coexistence curve on the p-T phase diagram and at four state points located ...
Lívia, Pártay, Pál, Jedlovszky
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Fluidization in Supercritical Water: Heat Transfer between Particle and Supercritical Water
International Journal of Chemical Reactor Engineering, 2018Abstract Supercritical water fluidized bed reactor, which is used to gasify biomass and produce hydrogen, is a new member of fluidized bed family. Forced convection heat transfer between supercritical water and particles is a major basic heat transfer mechanism in supercritical water fluidized bed reactor. The object of this paper was
Liping Wei, Youjun Lu
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Simulation of supercritical water and of supercritical aqueous solutions
The Journal of Chemical Physics, 1991Molecular dynamics (MD) calculations have been performed to determine equilibrium structure and properties of systems modeling supercritical (SC) water and SC aqueous solutions at two states near the critical point using the simple point charge (SPC) potential model of Berendsen et al. for water.
P. T. Cummings +4 more
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Pentachlorophenol oxidation rates in supercritical water
Journal of Environmental Science and Health, Part A, 2007The oxidation rate of pentachlorophenol, [C(6)HCl(5)O] which is used to control termites and as a general herbicide and also as the probable human's carcinogen, was investigated in an isothermal continuous tubular reactor under supercritical water oxidation (SCWO) conditions.
Seung Ho, Han +3 more
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Structure of supercritical water
Journal of Molecular Liquids, 2001Abstract This review paper gives the more up to date information on the structure of supercritical water, at different thermodynamic states, for densities ranging from 0.2 to 0.7 g.cm−3, studied by neutron scattering. The experimental partial pair correlation functions gOH(r), GHH(r) and gOO(r) are compared with the results of molecular dynamics ...
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Thermal Lensing in a Supercritical Water Medium
The Journal of Physical Chemistry A, 2006A pulsed, two-beam, thermal lensing experiment was performed to determine the concentration of aqueous solutes above the critical point of water. Despite a very significant mirage effect due to thermal gradients in the cell and absorption by water itself, the thermal lensing signal strength for aqueous benzoic acid in supercritical water was found to ...
Rene G, Rodriguez +7 more
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Chemistry in Supercritical Water
Angewandte Chemie - International Edition, 1999Water is a special liquid-and not only under "normal" conditions. Water in the supercritical state (shaded area in the phase diagram) is distinguished by special properties which are wholly at variance with those of normal water. So far these have usually been exploited for the purification of waste water, for example for the complete oxidation of ...
Dirk Bröll +7 more
exaly +2 more sources