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

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.

Yolk–shell Fe3O4@ZrO2 prepared by a tunable polymer surfactant assisted sol–gel method for high temperature stable microwave absorption

2014 ◽  
Vol 2 (35) ◽  
pp. 7275-7283 ◽  
Author(s):  
Meng Yu ◽  
Chongyun Liang ◽  
Mengmei Liu ◽  
Xialin Liu ◽  
Kaiping Yuan ◽  
...  
Keyword(s):  
High Temperature ◽  
Shell Thickness ◽  
Sol Gel ◽  
Hydroxypropyl Cellulose ◽  
Shell Structures ◽  
Gel Method ◽  
Sol Gel Method ◽  
Highly Dispersed ◽  
Polymer Surfactant ◽  
Surfactant Assisted

Highly-dispersed Fe3O4@ZrO2 yolk–shell structures with a ZrO2 shell of homogeneous shell thickness was successfully prepared via a polymer surfactant (hydroxypropyl cellulose) assisted sol–gel method.

Efficient V2O5/TiO2 composite catalysts for dimethoxymethane synthesis from methanol selective oxidation

RSC Advances ◽  
2015 ◽  
Vol 5 (31) ◽  
pp. 24795-24802 ◽  
Author(s):  
Zhihong Fan ◽  
Heqin Guo ◽  
Kegong Fang ◽  
Yuhan Sun
Keyword(s):  
Selective Oxidation ◽  
Sol Gel ◽  
Methanol Conversion ◽  
Gel Method ◽  
Sol Gel Method ◽  
Composite Catalysts ◽  
Methanol Selective Oxidation ◽  
Catalytic Performances

The figure presented the catalytic performances of composite supported V2O5–TiO2–SiO2 catalyst prepared by improved sol–gel method. V2O5–TiO2–SiO2 catalyst showed efficient activity of 51% methanol conversion and 99% DMM selectivity at 413 K.

Development of Highly Dispersed Hybrid Nanoalumina with the Sol-Gel Method

2014 ◽  
Vol 87 ◽  
pp. 48-53 ◽  
Author(s):  
Foteini Petrakli ◽  
Dimitris Sioulas ◽  
Athena Tsetsekou
Keyword(s):  
Electron Microscopy ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Alumina Powder ◽  
Complexation Reaction ◽  
Ethylene Imine ◽  
Gel Method ◽  
Sol Gel Method ◽  
Highly Dispersed

A hybrid sol-gel method was employed to develop a uniform and highly dispersed alumina nanopowder in the presence of hyperbranched dendritic poly(ethylene)imine (PEI) acting as template material and complexation agent for aluminium ions. For this purpose, the hydrolysis and polycondensation reactions followed the complexation reaction between the Al(NO3)3precursor and PEI, whereas ammonium polymethacrylate was added to improve the powder dispersion. The as-formed nanopowder was characterized before and after calcination studies carried out in the temperature range 100-1200 °C. For this purpose Scanning Electron Microscopy (SEM), Field Emission SEM, Transmission Electron Microscopy (TEM), X Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Thermogravimetric and Differential Thermal Analysis (TG-DTA), N2porosimetry and ζ-potential measurements at different pH were carried out. The analysis confirmed the successful formation of a boehmite-PEI hybrid material of uniform tiny spheroid crystals (~ 1-2 nm) and small agglomerates. The boehmite phase is kept up to 300 °C, whereas after calcination at 600 °C a stabilized γ-alumina powder of high surface area and crystal sizes around 2-5 nm results. This phase is quite stable being kept even after calcination at 1000 °C. The transformation to the stable α-alumina phase is completed at 1100 °C leading to an easily dispersed nanopowder with crystal sizes ranging between 5-25 nm.

Synthesis and Photocatalytic Property of N-doped BiVO$lt;inf$gt;4$lt;/inf$gt; via Sol-Gel Method Using Corn Stem as Template

2014 ◽  
Vol 29 (8) ◽  
pp. 807
Author(s):  
WANG Min ◽  
NIU Chao ◽  
DONG Zhan-Jun ◽  
CHE Yin-Sheng ◽  
DONG Duo ◽  
...  
Keyword(s):  
Sol Gel ◽  
Photocatalytic Property ◽  
Gel Method ◽  
Sol Gel Method

Fe2O3 - TiO2 THIN FILMS PREPARED BY SOL-GEL METHOD

2011 ◽  
Vol 10 (2) ◽  
pp. 187-192 ◽  
Author(s):  
Ramona-Crina Suciu ◽  
Marcela Corina Rosu ◽  
Teofil Danut Silipas ◽  
Emil Indrea ◽  
Violeta Popescu ◽  
...  
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Tio2 Thin Films ◽  
Gel Method ◽  
Sol Gel Method
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