Topic
Sodium sulfide
About: Sodium sulfide is a research topic. Over the lifetime, 2851 publications have been published within this topic receiving 27733 citations. The topic is also known as: disodium sulfide.
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TL;DR: In this article, the corrosion behavior of Fe3Al was investigated in simulating biofilm environment by open circle potential, polarization curves, and electrochemical impedance in simulated seawater.
Abstract: Calcium Alginate is a kind of natural biopolymer which can be deposited on metal surfaces to form film. In this work, microbe film was simulated by Calcium Alginate gel, according to the natural structure and property of microbe film. Acetic acid, manganese dioxide, and sodium sulfide were added separately in sodium chloride solution to simulate different bacteria culture systems. The corrosion behavior of Fe3Al was investigated in simulating biofilm environment by open circle potential, polarization curves, and electrochemical impedance. Electrochemical results show that the passivating film formed immediately when Fe3Al electrodes exposed in simulated seawater. The corrosion process of Fe3Al in the medium with manganic sediment was mainly dominated by oxygen diffusion. In the simulated environment with acetic acid, the pitting corrosion potential on the surface of Fe3Al moved towards negative accompanied with the increasing concentration of chlorine ion and the decreasing value of pH. Simulated sulphate...
7 citations
TL;DR: In this article, the physical chemistry of the Na2O-MoO3 system was investigated using a high-temperature electrochemical cell with Na, β-alumina as the solid electrolyte.
7 citations
TL;DR: Barium sulfate, which is recycled according to a new flowsheet of sodium sulfide production, was reduced by various carbon-containing materials (oil and furnace coke and Zh-grade coal) as discussed by the authors.
Abstract: Barium sulfate, which is recycled according to a new flowsheet of sodium sulfide production, was reduced by various carbon-containing materials (oil and furnace coke and Zh-grade coal). The reduction process was studied in comparison with the reduction of natural barite concentrate.
7 citations
Patent•
17 Apr 1996TL;DR: In this article, a process for regenerating sodium hydroxide from aqueous solutions of sodium sulfide (Na2S) was proposed, in which a metal was selected from the group consisting of iron and cobalt, for a time and at a temperature sufficient to form a metal sulfide.
Abstract: The present invention is directed toward a process for regenerating sodium hydroxide (NaOH) from aqueous solutions of sodium sulfide (Na2S) comprising heating aqueous sodium sulfide in the presence of a metal selected from the group consisting of iron and cobalt, for a time and at a temperature sufficient to form a metal sulfide, sodium hydroxide and molecular hydrogen.
7 citations
Patent•
20 Feb 2008
TL;DR: In this paper, a method to precipitate amorphous zinc sulfide thin film under the ambient temperature is described, which is characterized in that the method integrates an ultrasonic irradiation technology and continuous absorption and reaction method of ion layer, the process of the thin film deposition comprises a plurality of cycles, each cycle comprises four steps: absorption of the anion precursor solution, reaction and absorption of cation precursor solution.
Abstract: The utility model relates to a method to precipitate amorphous zinc sulfide thin film under the ambient temperature, which is characterized in that the method integrates an ultrasonic irradiation technology and continuous absorption and reaction method of ion layer, the process of the thin film deposition comprises a plurality of cycles, each cycle comprises four steps: (1) absorption of the anion precursor solution; (2) ultrasonic irradiation on the substrate; (3) reaction and absorption of the cation precursor solution; (4) ultrasonic irradiation on the substrate The anion precursor is prepared by mixture of the inorganic salt of the zinc or the organic acetate with the complexing agent, the complexing agent can be ethylenediamine or ammonia water; the cation precursor is made of the inorganic sulfide, such as sodium sulfide; the substrate is made of either the ordinary glass, or the quartz glass, or the ITO conductive glass, or the monocrystalline silicon, or the sapphire The utility model has advantages that the ZnS film layer is made of the compact ZnS nanometer particles, the size of the particle is 10 to 30 nm; the heating or expensive vacuum equipment is not required due to simple processing method adopted and low cost The method is applicable to the mass production
7 citations