Cobalt single atom catalysts for efficient electrosynthesis of hydrogen peroxide

2021 ◽  
Author(s):  
Hui Xu ◽  
Shengbo Zhang ◽  
Jing Geng ◽  
Guozhong Wang ◽  
Haimin Zhang
Keyword(s):  
Hydrogen Peroxide ◽  
Ethylene Diamine Tetraacetic Acid ◽  
Cobalt Chloride ◽  
Graphitic Carbon ◽  
Single Atom ◽  
Tetraacetic Acid ◽  
Single Atoms ◽  
Electrosynthesis Of Hydrogen Peroxide ◽  
Chloride Hexahydrate ◽  
Cobalt Chloride Hexahydrate

We report the synthesis of cobalt (Co) single atoms (SAs) anchored on N-doped graphitic carbon (Co-SAs/NC) by pyrolysis of a mixture of cobalt chloride hexahydrate, ethylene diamine tetraacetic acid (EDTA)...

scholarly journals Statistical Approach of Nutrient Optimization for Microalgae Cultivation

2020 ◽  
Vol 141 ◽  
pp. 03009
Author(s):  
Pichayatorn Bunkaew ◽  
Sasithorn Kongruang
Keyword(s):  
Light Intensity ◽  
Cobalt Chloride ◽  
Lipid Production ◽  
Biodiesel Production ◽  
Mixotrophic Cultivation ◽  
Microalgae Cultivation ◽  
Cultivation Time ◽  
Chlorella Sp ◽  
Chloride Hexahydrate ◽  
Cobalt Chloride Hexahydrate

The Plackett-Burman Design (PBD) was applied to study fresh water microalgae cultivation using Chlorella sp. TISTR 8411 to select the influential nutrient factors for biomass and lipid production. The PBD for 13 trials from 11 nutrient factors with 3 levels was studied in the mixotrophic cultivation at 28 0C under 16:8 light and dark photoperiods over 7 days of cultivation time. Two influential factors were chosen as glucose and cobalt chloride hexahydrate to further design via Box-Behnken Design (BBD) in order to optimize the cultivation of this microalgae for biodiesel production. The 17 trials of 3 factors and 3 levels of BBD experimental design technique were applied with varying factors of glucose (20-40 g/L), cobalt chloride hexahydrate (0.01-0.04 mg/L) and light intensity (4,500-7,500 Lux) under 16:8 light and dark photoperiods over 7 days of cultivation time at 28 0C. Result showed that Chlorella sp. TISTR 8411 cultivation yield 0.52 g/L biomass and 0.31 g/L lipid production resulting in approximately 60% of lipid production when cultivated in 20.05 g/L glucose, 0.04 mg/L CoCl26H2O under light intensity of 4,614 Lux with the supplementation of 4.38 g/L NaHCO3 coupled with 1 g/L of both NaNO3 and KH2PO4. Under statically mixotrophic cultivation, result indicated that Chlorella sp. TISTR 8411 had potential to produce high lipid content for biodiesel application and biomass production for nutraceutical application. Further experiment with the longer cultivation period up to 2 weeks would implement not only for monitoring the growth kinetics but also evaluating the suitable type of fatty acid production.

The magnetic diagram of state of cobalt chloride hexahydrate

Physica ◽  
1973 ◽  
Vol 63 (1) ◽  
pp. 191-196 ◽  
Author(s):  
J.W. Metselaar ◽  
D. De Klerk
Keyword(s):  
Cobalt Chloride ◽  
Chloride Hexahydrate ◽  
Cobalt Chloride Hexahydrate

scholarly journals Synthesis of some D-homo-D-aza estratriene derivatives

2004 ◽  
pp. 225-230 ◽  
Author(s):  
Julijana Petrovic ◽  
Marija Sakac ◽  
Katarina Penov-Gasi ◽  
Vjera Pejanovic ◽  
Suzana Jovanovic-Santa
Keyword(s):  
Sodium Borohydride ◽  
Cobalt Chloride ◽  
Subsequent Reduction ◽  
Chloride Hexahydrate ◽  
Cobalt Chloride Hexahydrate ◽  
Acidic Conditions ◽  
Synthetic Routes

In this paper two synthetic routes for obtaining D-homo-D-aza estratriene derivatives were described. Namely, starting from 3-methoxyestra-1,3,5(10)-trien-16-oximino-17-one (1) 3-methoxy-17-aza-D-homoestra-1,3,5(10)-triene (5) was synthesized in two step. Another D-aza derivative was synthesize, starting from 3-methoxy-17-oxo-16,17-secoestra-1,3,5(10)-trien-16-nitrile (6). For that purpose, the seco-cyanoaldehyde was converted into its 17-ethylenacetal 7 followed by subsequent reduction of the nitrile function with sodium borohydride in the presence of cobalt chloride hexahydrate. Finally, under acidic conditions the obtained 16-amino-17-ethylenacetal 8 was transformed into 3-metoxy-17-aza-D-homoestra-1,3,5(10),17(17a)-tetraene (9).

Facile Preparation of Co3O4 Nanoflower through Forced Hydrolysis

2014 ◽  
Vol 699 ◽  
pp. 181-185 ◽  
Author(s):  
Basir Nor Irwin ◽  
Sharif Zein Sharif Hussein ◽  
Ahmad Abdul Latif ◽  
Miskam Muhamad Azman
Keyword(s):  
Cobalt Chloride ◽  
Average Pore Size ◽  
Flower Structure ◽  
Average Pore ◽  
Hydrothermal Technique ◽  
Chloride Hexahydrate ◽  
Cobalt Chloride Hexahydrate ◽  
One Step ◽  
Forced Hydrolysis ◽  
Facile Preparation

One of the interesting structures in nanoCo3O4's preparation that have been reported fairly recent is the flower-like structure often referred as nanoflower. Several interesting applications involving Co3O4 nanoflower have also been reported. This paper present a facile approach to prepare Co3O4 nanoflower using one step forced hydrolysis technique using cobalt chloride hexahydrate as starting material as opposed to the standard two steps hydrothermal technique. The produced nanoscale Co3O4 is in agglomerate of nanorods producing a dandelion-like flower structure. The prepared Co3O4 is in hydrated and amorphous forms with a surface area of 62 m2/g and average pore size of 12 nm.

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