Measurement of the activity coefficient of aqueous NaHS to 80°C and 0.2m in the system NaHS−H2S−H2O

Herr, F. L.; Helz, George R.

doi:10.1007/bf01167238

Cited by 9 publications

(2 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ouyang’s group has developed an unique cation-exchange technology to overcome the lattice mismatch between metal and sulfide . Thioacetamide (TAA) and sodium hydrosulfide (NaHS) are commonly used in various methods to synthesize different sulfides (ZnS, Ag 2 S, CdS, and ln 2 S 3 ). − TAA as a sulfur source with moderate activity is usually used at a relatively high temperature because the hydrolysis rate of TAA is greatly accelerated. NaHS is an active oxidant and exhibits high reactivity, which is dependent on the pH value of the solution .…”

Section: Introductionmentioning

confidence: 99%

Controlled Growth of Sulfide on Gold Nanotriangles with Tunable Local Field Distribution and Enhanced Photocatalytic Activity

Yang

Luo

et al. 2016

J. Phys. Chem. C

View full text Add to dashboard Cite

Metal−semiconductor heteronanostructures have attracted increasing attention due to the strong interactions between the two nanoscale-spaced components. Herein, a steerable hydrothermal method is used to control the growth of Ag 2 S shells onto Au nanotriangles with tunable plasmon resonance and local field distribution. Through adjusting pH value and sulfur source, three types of Au/ Ag 2 S heteronanostructures are obtained, including shells on the tips (Au/Ag 2 S (tips)), shells on the sides (Au/Ag 2 S (sides)), and complete shells (Au@Ag 2 S). The surface plasmon resonance and local field confinement are demonstrated to vary with the shell position. Furthermore, compact CdS nanoshells are coated onto the Au@Ag 2 S without any shape change of Au cores. By testing the photodegradation rate of Rhodamine B (RhB) under visible-light irradiation, the Au@ Ag 2 S@CdS hybrids exhibit enhanced photocatalytic activity compared with Au@CdS and CdS. The strong local electric field, the enhanced visible-light absorption, and the optimum band arrangement between Ag 2 S and CdS are thought to be the main factors.

show abstract

Section: Introductionmentioning

confidence: 99%

Controlled Growth of Sulfide on Gold Nanotriangles with Tunable Local Field Distribution and Enhanced Photocatalytic Activity

Yang

Luo

et al. 2016

J. Phys. Chem. C

View full text Add to dashboard Cite

show abstract

“…The hydrolysis of NaHS can also occur to form H 2 S, and can be appreciable and sensitive to small variations of pH of neutral aqueous solutions [40]. Multiphase reactors are widely used in chemical industries because they offer high flexibility and allow appropriate conditions according to the requirements of the chemical reaction [41].…”

Section: (21)mentioning

confidence: 99%

Industrial Manufacturing of Aqueous Solutions of Sodium Sulfhydrate (NaHS 43%) in a Multi-Phase Reactor

Reátegui-Romero¹,

Castillejo-Melgarejo²,

King-Santos³

2019

TOCENGJ

View full text Add to dashboard Cite

Background:This research deals with the manufacture of sodium sulphides and sodium sulfhydrate in an isothermal multiphase chemical reactor to produce concentrated aqueous solutions of sodium sulfhydrate (greater than 43%) through Gas-Liquid-Solid reactions from hydrogen sulfide and hydroxide of sodium at 50%. Methods:A method is proposed that integrates the recovery of hydrogen sulfide from an industrial chemical process where the H 2 S gas is generated as a sub product, the strategy of the developed process was integrated into a manufacturing plant of dithiophosphoric acids (ADTF) where it was possible to recover the hydrogen sulfide in the form of an aqueous solution of NaHS with a concentration higher than 43%. Results:The experimental tests showed that the biphasic reaction mixture formed by Na 2 S, NaHS and H 2 O with global compositions of 13.3%; 26.9% and 59.7% respectively, is appropriate to obtain 43% sodium sulfhydrate in a stirred tank reactor, operated at temperatures ranging from 50°C to 55°C, where gaseous hydrogen sulfide is continually bubbled. Conclusion:Sodium sulfide (specifically Na 2 S.5H 2 O crystals) of the biphasic mixture is produced from a solution of sodium sulfhydrate (43% NaHS) and aqueous sodium hydroxide (50% NaOH). The environmental problem generated by the H 2 S was solved with a 90% recovery in the multiphase reactor and 5% in the safety absorber.

show abstract

The chemistry of the hydrogen sulfide and iron sulfide systems in natural waters

Morse¹,

Millero²,

Cornwell³

et al. 1987

Earth-Science Reviews

618

343

View full text Add to dashboard Cite

Measurement of the activity coefficient of aqueous NaHS to 80°C and 0.2m in the system NaHS−H2S−H2O

Cited by 9 publications

References 19 publications

Controlled Growth of Sulfide on Gold Nanotriangles with Tunable Local Field Distribution and Enhanced Photocatalytic Activity

Controlled Growth of Sulfide on Gold Nanotriangles with Tunable Local Field Distribution and Enhanced Photocatalytic Activity

Industrial Manufacturing of Aqueous Solutions of Sodium Sulfhydrate (NaHS 43%) in a Multi-Phase Reactor

The chemistry of the hydrogen sulfide and iron sulfide systems in natural waters

Contact Info

Product

Resources

About