Alkaline niobates ANbO3 (A = Li, Na, K) as heterogeneous catalysts for dipropyl sulfide oxidation

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102015-102022 ◽  
Author(s):  
Candelaria Leal Marchena ◽  
Clara Saux ◽  
Robinson Dinamarca ◽  
Gina Pecchi ◽  
Liliana Pierella
Keyword(s):  
Selective Oxidation ◽  
Heterogeneous Catalysts ◽  
Sol Gel ◽  
Sulfide Oxidation ◽  
Type Structure ◽  
Gel Method ◽  
Sol Gel Method ◽  
Perovskite Type ◽  
Perovskite Type Structure

Alkaline ANbO3 (A = Li, Na, K) niobates with perovskite type structure were prepared by sol gel method, extensively characterized and evaluated as heterogeneous catalysts for selective oxidation of dipropyl sulfide to its corresponding sulfoxide.

Effects of Calcination Parameters on the Microstructure and Morphology of PZT Nanoparticles Prepared by Modified Sol–Gel Method

2012 ◽  
Vol 576 ◽  
pp. 326-329 ◽  
Author(s):  
Amid Shakeri ◽  
Hossein Abdizadeh ◽  
Mohammad Reza Golobostanfard
Keyword(s):  
Lead Zirconate Titanate ◽  
Sol Gel ◽  
Lead Zirconate ◽  
X Ray Diffraction ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Treatment Conditions ◽  
Perovskite Type ◽  
Perovskite Type Structure

Lead zirconate titanate nanopowder Pb(Zr0.53Ti0.47)O3 (PZT) was prepared by modified sol-gel method with 1-propanol as solvent and acetylacetone as stabilizer. The microstructure and particle size measurements at different heat treatment conditions were characterized by field emission scanning electron microscopy and x-ray diffraction analysis. It was found that the PZT nanoparticles calcinated at 600 °C showed mean diameter of 75-125 nm with high crystallinity of perovskite-type structure.

Highly dispersed MoVTeNbO/SiO2 catalysts prepared by the sol–gel method for selective oxidation of propane to acrolein

2009 ◽  
Vol 10 (12) ◽  
pp. 1591-1594 ◽  
Author(s):  
Xiaodong Yi ◽  
Xiaodan Sun ◽  
Xiaobing Zhang ◽  
Chuanjing Huang ◽  
Weizheng Weng ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Highly Dispersed

scholarly journals Ferroelectric Behavior and Spectroscopic Properties of La-Modified Lead Titanate Nanoparticles Prepared by a Sol-Gel Method

2019 ◽  
Author(s):  
Massaud Mostafa ◽  
Ziyad Alrowaili ◽  
Gehad Rahwan ◽  
Melad Gerges
Keyword(s):  
Dielectric Properties ◽  
Lead Titanate ◽  
Sol Gel ◽  
Spectroscopic Properties ◽  
Secondary Phases ◽  
Dielectric Characteristics ◽  
Gel Method ◽  
Sol Gel Method ◽  
Time Periods ◽  
Perovskite Type

Perovskite type (Pb1-1.5x Lax0.5x)TiO3 (PLT) ceramics with x = 0.21, 0.22, 0.23, 0.24, 0.25 were prepared by the sol-gel method. Their structural, optical, and dielectric properties were investigated. The crystallite compounds were obtained by calcinating the mixture of PbCO3, TiO2, and La2O3 at 1000ºC for different time periods. After 4 h annealing, PLT23 sample, no secondary phases have been observed in the XRD spectrum of the PLT sample with 23% La content (PLT23). This sample appears to be notably distinguished in its structural, optical, and dielectric characteristics compared with other samples.

NOx-Sensing Characteristics of Sensor with La0.75Sr0.25Cr0.5Mn0.5O3 Sensing Electrode

2013 ◽  
Vol 339 ◽  
pp. 109-113
Author(s):  
Yin Lin Wu ◽  
Hai Yan Zhao ◽  
Ling Wang
Keyword(s):  
Electrochemical Sensors ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Temperature Range ◽  
Perovskite Type Oxide ◽  
Extreme Sensitivity ◽  
Perovskite Type ◽  
Sensing Characteristics

Electrochemical sensors based on tubular yttria-stabilized zerconia (YSZ) with the perovskite-type oxide as a sensing-electrode (SE), which is prepared by sol-gel method, were fabricated and examined for NO2 detection in the temperature range 400~700°C. The results show that La0.75Sr0.25Cr0.5Mn0.5O3(LSCM), shows extreme sensitivity to NO2. The EMF varies linearly as a function of the concentration of NO2 (0 ~ 463 ppm) at 500 °C.

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