scholarly journals Preparation and Catalytic Properties of Iron-Cerium Phosphates with Sodium Dodecyl Sulfate

ISRN Ceramics ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Hiroaki Onoda ◽  
Takeshi Sakumura
Keyword(s):  
Catalytic Activity ◽  
Sodium Dodecyl Sulfate ◽  
Ammonium Acetate ◽  
Catalytic Properties ◽  
Sodium Dodecyl ◽  
Iron Phosphate ◽  
High Catalytic Activity ◽  
Sem Images ◽  
Dodecyl Sulfate ◽  
Xrd Patterns

Iron phosphate was prepared from iron nitrate and phosphoric acid with sodium dodecyl sulfate at various stirring hours. The chemical composition of the obtained samples was estimated from ICP and XRD measurements. Particle shape and size distribution were observed by SEM images and laser diffraction/scattering methods. Further, the catalytic activity was studied with the decomposition of the complex between formaldehyde, ammonium acetate, and acetylacetone. The peaks of FePO4 were observed in XRD patterns of samples prepared in Fe/Ce = 10/0 and then heated at 600°C. Other samples were amorphous in XRD patterns. Iron-cerium phosphates had high catalytic activity for the decomposition of the complex.

scholarly journals Synthesis and catalytic properties of iron - cerium phosphates with surfactant

Cerâmica ◽  
2013 ◽  
Vol 59 (349) ◽  
pp. 165-169
Author(s):  
H. Onoda ◽  
T. Sakumura
Keyword(s):  
Catalytic Activity ◽  
Ammonium Acetate ◽  
Catalytic Properties ◽  
Iron Phosphate ◽  
Laser Diffraction ◽  
High Catalytic Activity ◽  
Diffraction Scattering ◽  
Sem Images ◽  
Xrd Patterns ◽  
Dodecyl Ether

Iron phosphate was prepared from iron nitrate and phosphoric acid with a surfactant, pentaethylene glycol mono dodecyl ether. The chemical composition of the obtained samples was estimated from ICP and XRD measurements. Particle shape and size distribution were observed by SEM images and laser diffraction / scattering methods. Further, the catalytic activity was studied with the decomposition of the complex between formaldehyde, ammonium acetate, and acetylacetone. The peaks of FePO4 were observed in XRD patterns of samples prepared in Fe/Ce=10/0 and then heated at 600 ºC. Other samples were amorphous in XRD patterns. Iron-cerium phosphates had high catalytic activity for the decomposition of the complex.

Surfactant-mediated electrodeposition of a water-oxidizing manganese oxide

2015 ◽  
Vol 44 (38) ◽  
pp. 16873-16881 ◽  
Author(s):  
Wojciech T. Osowiecki ◽  
Stafford W. Sheehan ◽  
Karin J. Young ◽  
Alec C. Durrell ◽  
Brandon Q. Mercado ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Sodium Dodecyl Sulfate ◽  
Manganese Oxide ◽  
Manganese Dioxide ◽  
Water Oxidation ◽  
Mechanical Stability ◽  
Sodium Dodecyl ◽  
Dodecyl Sulfate

Use of sodium dodecyl sulfate (SDS) during electrodeposition improves the mechanical stability and catalytic activity of manganese dioxide for electrocatalytic water oxidation.

Sodium dodecyl sulfate—polyethyleneimine—water system. Self-organization and catalytic activity

2005 ◽  
Vol 54 (3) ◽  
pp. 641-649 ◽  
Author(s):  
L. Ya. Zakharova ◽  
F. G. Valeeva ◽  
D. B. Kudryavtsev ◽  
A. V. Bilalov ◽  
A. Ya. Tret ‘yakova ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Sodium Dodecyl Sulfate ◽  
Sodium Dodecyl ◽  
Water System ◽  
Self Organization ◽  
Dodecyl Sulfate

scholarly journals Improved Formation Kinetics of Carbon Dioxide Hydrate in Brine Induced by Sodium Dodecyl Sulfate

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2094
Author(s):  
Lu Liu ◽  
Yuanxin Yao ◽  
Xuebing Zhou ◽  
Yanan Zhang ◽  
Deqing Liang
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Induction Time ◽  
Conversion Rate ◽  
High Efficiency ◽  
Low Cost ◽  
Formation Rate ◽  
Sodium Dodecyl ◽  
Hydrate Formation ◽  
Sem Images ◽  
Dodecyl Sulfate

Due to high efficiency and low cost, hydrate-based desalination is investigated as a pretreatment method for seawater desalination. To improve the formation rate of hydrates, the effect of sodium dodecyl sulfate (SDS) on CO2 hydrate formation from a 3.5 wt.% NaCl solution was measured at 275 K and 3 MPa. X-ray diffraction (XRD) and cryo-scanning electron microscopy (cryo-SEM) were used to measure the crystal structure and micromorphology of the formed hydrates. The results showed that the induction time of CO2 hydrate formation reduced from 32 to 2 min when SDS concentration increased from 0.01 to 0.05%, the hydrate conversion rate increased from 12.06 to 23.32%, and the remaining NaCl concentration increased from 3.997 to 4.515 wt.%. However, as the SDS concentration surpassed 0.05 wt.%, the induction time increased accompanied by a decrease in the hydrate conversion rate. XRD showed that the CO2 hydrate was a structure I hydrate, and SDS had no influence on the hydrate structure. However, cryo-SEM images revealed that SDS promoted the formation of hydrates by increasing the specific surface area of the formed hydrates and folds; rods and clusters could be found on the surface of the CO2 hydrate. Thus, the best SDS concentration for promoting CO2 hydrate formation was approximately 0.05 wt.%; desalination was most efficient at this concentration.

Solubility and adsorption behaviors of chlorophenols in the presence of surfactant

1997 ◽  
Vol 35 (7) ◽  
pp. 123-130 ◽  
Author(s):  
J. C. Liu ◽  
P. S. Chang
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Critical Micelle Concentration ◽  
Sodium Dodecyl ◽  
Adsorption Behaviors ◽  
Brij 35 ◽  
Important Index ◽  
Dodecyl Sulfate ◽  
Triton X

The solubility of chlorophenols as affected by surfactant was investigated. Three kinds of surfactant, sodium dodecyl sulfate, Triton X-100, and Brij 35, were utilized. The solubilization of chlorophenols by surfactant follows the order of 2,4,6-trichlorophenol > 2,4-dichlorophenol > 2,6-dichlorophenol > 2-chlorophenol; and the critical micelle concentration is an important index. The adsorption reactions of 2,4-dichlorophenol and 2,4,6- trichlorophenol onto hydrous montmorillonite in the presence of surfactant were examined. The presence of surfactant decreased the adsorption of chlorophenols significantly. The roles of hydrophobicity of chlorophenols in solubilization and adsorption behaviors are discussed.

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