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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.


Papers
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Journal ArticleDOI
TL;DR: Dibenzyldisulfide was reductively degraded by a methanogenic mixed culture derived from a sewage digestor and additions of 2-bromoethane sulfonic acid prevented methanogenesis but did not adversely affect toluene yields.
Abstract: Dibenzyldisulfide was reductively degraded by a methanogenic mixed culture derived from a sewage digestor. Toluene was produced with benzyl mercaptan as an intermediate in sulfur-limited medium. Toluene production was strictly associated with biological activity; however, the reducing agent for the culture medium, Ti(III), was partially responsible for production of benzyl mercaptan. Sulfide was not detected. Additions of sodium sulfide did not inhibit toluene production. Additions of 2-bromoethane sulfonic acid prevented methanogenesis but did not adversely affect toluene yields.

14 citations

Patent
28 Sep 1998
TL;DR: In this paper, a nanocrystal phosphor is synthesized by a liquid-phase reaction utilizing coprecipitation, where an organic acid such as acrylic acid or methacrylic acid is added.
Abstract: PROBLEM TO BE SOLVED: To produce a nanocrystal phosphor having a nanostructure crystal, doped well with an activator, and having a high luminous efficiency. SOLUTION: A nanocrystal phosphor activated with an activator and having a mean particle diameter of 2-5 nm is irradiated with ultraviolet rays. The nanocrystal phosphor is synthesized by a liquid-phase reaction utilizing coprecipitation. For example, a manganese-doped zinc sulfide nanocrystal phosphor is synthesized by reacting manganese acetate with zinc acetate together with sodium sulfide in a solvent. In carrying out the liquid phase reaction, an organic acid such as acrylic acid or methacrylic acid is added. Alternatively, after the liquid-phase reaction, a polymeric organic acid such as polyacrylic acid or polymethacrylic acid or a polystyrene is added. COPYRIGHT: (C)2000,JPO

14 citations

Patent
28 Jul 2010
TL;DR: In this paper, a method for recovering arsenic sulfide from arsenic-containing waste residue, which comprises of the following steps: taking arsenic residue with the arsenic content of 7.1-16.8, stirring and mixing with water, evenly mixing, and gradually adding alkali at the temperature of room temperature-60 DEG C for carrying out leaching treatment, wherein the alkali content is calculated by 2.0-3.5g/g.
Abstract: The invention discloses a method for recovering arsenic sulfide from arsenic-containing waste residue, which comprises the following steps: taking arsenic sulfide residue with the arsenic content of 7.1-16.8%, stirring and mixing with water, wherein the water content is calculated by 100-150mL/100g residue; evenly mixing, and gradually adding alkali at the temperature of room temperature-60 DEG C for carrying out leaching treatment, wherein the alkali content is calculated by 2.0-3.5g/g arsenic sulfide; further continuously maintaining the leaching process for 40-120 min after completing the addition of the alkali, and filtering; using water which is calculated by 50mL/100g arsenic sulfide residue for washing the residue step by step, merging filtrate and washing solution, using sulfuric acid with the concentration of 93-98% for neutralization, controlling the pH to be 9-11, filtering, further using the sulfuric acid with the concentration of 93-98% for neutralization till the pH is 1-3.5, adding sodium sulfide for leading the pH to be 2-4, then filtering, carrying out 2-3 times of repulping washing and filtering washing on sediment, obtaining secondary sediment, and drying for obtaining an arsenic sulfide finished product. The method can reduce the reaction temperature, shorten the leaching time and improve the recovery rate of arsenic.

14 citations

Journal ArticleDOI
Jidan Liu1, Qingwen Gui1, Zhiyong Yang1, Ze Tan1, Ruqing Guo1, Ji-Cheng Shi 
TL;DR: In this paper, a method was developed for synthesizing 2-substituted 1,3-benzothiazoles through a copper-catalyzed, one-pot, three-component reaction of a 1-iodo-2-nitrobenzene with sodium sulfide and an aldehyde.
Abstract: A novel method was developed for synthesizing 2-substituted 1,3-benzothiazoles through a copper-catalyzed, one-pot, three-component reaction of a 1-iodo-2-nitrobenzene with sodium sulfide and an aldehyde.

14 citations

Journal ArticleDOI
TL;DR: In this paper, a comparative experimental study has been performed of the action at room temperature of several poisons, when added in small proportion to 1 N sulfuric acid solution, on the depth of the nickel hydride formation in electrodeposited nickel layers during cathodic charging.

14 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202325
202233
202136
2020107
2019143
2018172