Sodium Borohydride Reduction of Nitrostyrenes by Reverse Addition: A Simple and Efficient Method for the Large-Scale Preparation of Phenylnitroethanes

Synthesis ◽  
1985 ◽  
Vol 1985 (09) ◽  
pp. 886-887 ◽  
Author(s):  
Anup Bhattacharjya ◽  
Ranjan Mukhopadhyay ◽  
Satyesh C. Pakrashi
Keyword(s):  
Sodium Borohydride ◽  
Efficient Method ◽  
Large Scale ◽  
Borohydride Reduction ◽  
Large Scale Preparation ◽  
Scale Preparation ◽  
Sodium Borohydride Reduction

Preparation of silver nanoparticles and application in water-based conductive inks

2019 ◽  
Vol 33 (32) ◽  
pp. 1950385
Author(s):  
Y. Z. Zhao ◽  
D. X. Du ◽  
Y. H. Wang
Keyword(s):  
Silver Nanoparticles ◽  
Sodium Borohydride ◽  
Large Scale ◽  
Raw Material ◽  
High Yield ◽  
Conductive Inks ◽  
Large Scale Preparation ◽  
Heat Treated ◽  
Scale Preparation ◽  
Conductive Fillers

We reported a simple, high yield and large-scale preparation method for silver nanoparticles. Silver nanoparticles with 8–13 nm in diameter were successfully synthesized by silver nitrate as raw material, sodium borohydride as reducing agent, dispersan-5040 (polycarboxylate sodium salt) as surface modifier in aqueous solution. The effects of sodium borohydride and dispersan-5040 on the morphologies of silver nanoparticles were investigated. Further, the conductive inks were prepared with as-synthesized silver nanoparticles as conductive fillers in the presence of deionized (DI) water and additives. The effects of conductive fillers and additives on the pH, conductivity, surface tension and viscosity of the inks were investigated. The conductive patterns were fabricated by inkjet printer and their performances were studied. The sheet resistances of the printed pattern with seven-layer was 1.2 [Formula: see text] when the printed pattern was heat-treated at 120[Formula: see text]C for 60 min. We succeeded in printing a simple conductive circuit on photographic paper, which can light three 0.06 W LED beads. The successful fabrication of the functional circuit proves the feasibility of the ink and provides some ideas for future paper-based circuits.

Purification of the Antihemophilic Factor by Gel Filtration on Agarose

1969 ◽  
Vol 22 (03) ◽  
pp. 577-583 ◽  
Author(s):  
M.M.P Paulssen ◽  
A.C.M.G.B Wouterlood ◽  
H.L.M.A Scheffers
Keyword(s):  
Factor Viii ◽  
Plasma Proteins ◽  
Large Scale ◽  
Gel Filtration ◽  
Large Scale Preparation ◽  
Scale Preparation ◽  
Antihemophilic Factor

SummaryFactor VIII can be isolated from plasma proteins, including fibrinogen by chromatography on agarose. The best results were obtained with Sepharose 6B. Large scale preparation is also possible when cryoprecipitate is separated by chromatography. In most fractions containing factor VIII a turbidity is observed which may be due to the presence of chylomicrons.The purified factor VIII was active in vivo as well as in vitro.

Sign in / Sign up

Export Citation Format

Share Document