scholarly journals Effects of Types of Metal Oxides on Hydrothermal Gasification of Phenol over Novel Metal Oxide–carbon Composite Supported Ni Catalysts Prepared by Sol-gel Method

2015 ◽  
Vol 58 (5) ◽  
pp. 302-311 ◽  
Author(s):  
Atsushi Ishihara ◽  
Kenta Imanishi ◽  
Tadanori Hashimoto ◽  
Hiroyuki Nasu
Keyword(s):  
Metal Oxide ◽  
Metal Oxides ◽  
Sol Gel ◽  
Carbon Composite ◽  
Ni Catalysts ◽  
Gel Method ◽  
Sol Gel Method ◽  
Supported Ni Catalysts ◽  
Supported Ni

Preparation of conducting film composed of polyaniline and metal oxide by sol-gel method

1999 ◽  
Vol 14 (1) ◽  
pp. 5-7 ◽  
Author(s):  
Takuya Hori ◽  
Noriyuki Kuramoto ◽  
Hideyuki Tagaya ◽  
Masa Karasu ◽  
Jun-ichi Kadokawa ◽  
...  
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Sol Gel ◽  
Silica Matrix ◽  
Conducting Film ◽  
Gel Method ◽  
Sol Gel Method

Conducting thin films were prepared by entrapping water-suspended polyaniline into a silica matrix by a sol-gel route. Without metal oxide, the conductivity of the film decreased after heat treatment. However, in the presence of metal oxides such as TiO2 and Al2O3, the conductivity increased after heat treatment at 85 °C and reached 17 Scm−1 The conductivity of the film depended on the kinds and amounts of metal oxides and the temperature of heat treatment.

Preparation of metal oxide supported catalysts and their utilization for understanding the effect of a support on the catalytic activity

2018 ◽  
Vol 42 (1) ◽  
pp. 402-410 ◽  
Author(s):  
Jhumur Seth ◽  
Prashant Dubey ◽  
Vijay R. Chaudhari ◽  
Bhagavatula L. V. Prasad
Keyword(s):  
Catalytic Activity ◽  
Transition Metal ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Metal Nanoparticles ◽  
Supported Catalysts ◽  
Sol Gel ◽  
Transition Metal Nanoparticles ◽  
Gel Method ◽  
Sol Gel Method

A convenient way of anchoring transition metal nanoparticles onto metal oxides by means of a toluene mediated sol–gel method is described.

scholarly journals AFM studies and electrochemical characterization of boron-doped diamond surfaces modified with metal oxides by the Sol-Gel method

2006 ◽  
Vol 17 (2) ◽  
pp. 257-264 ◽  
Author(s):  
Hugo B. Suffredini ◽  
Giancarlo R. Salazar-Banda ◽  
Sônia T. Tanimoto ◽  
Marcelo L. Calegaro ◽  
Sergio A. S. Machado ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Sol Gel ◽  
Electrochemical Characterization ◽  
Boron Doped Diamond ◽  
Diamond Surfaces ◽  
Gel Method ◽  
Sol Gel Method ◽  
Boron Doped

scholarly journals Catalytic myrtenol amination over gold, supported on alumina doped with ceria and zirconia

2018 ◽  
Vol 5 (1) ◽  
pp. 49-58 ◽  
Author(s):  
Yu.S. Demidova ◽  
I.L. Simakova ◽  
E.V. Suslov ◽  
K.P. Volcho ◽  
N.F. Salakhutdinov ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Sol Gel ◽  
Gold Catalyst ◽  
Catalyst Support ◽  
Acid Sites ◽  
One Pot ◽  
Gel Method ◽  
Sol Gel Method ◽  
Alcohol Activation ◽  
The One

Abstract In the current work gold catalysts supported on both commercial oxides and oxides synthesized by the sol-gel method were used for the one-pot alcohol amination of myrtenol. In general, utilization of metal oxides synthesized by the sol-gel method as the gold catalyst support enhanced the knowledge regarding key parameters determining catalytic behavior. Synthesized alumina was characterized by stronger acid sites favoring primary amine accumulation on the catalyst surface, as compared to the commercial oxide. Utilization of mixed metal oxides synthesized by the sol-gel method resulted in the non-additive behavior of different oxides enhancing the catalytic activity. Introduction of ceria into alumina modified the support basicity resulting in more efficient alcohol activation.

Application of Nanometer Metal Oxides in Infrared Ray Shielding Transparent Thin Film

2011 ◽  
Vol 474-476 ◽  
pp. 195-199 ◽  
Author(s):  
Ai Hong Guo ◽  
Xue Jiao Tang ◽  
Su Juan Zhang
Keyword(s):  
Thin Film ◽  
Metal Oxide ◽  
Metal Oxides ◽  
Sol Gel ◽  
Volume Ratio ◽  
Experimental Results ◽  
Mass Ratio ◽  
Gel Method ◽  
Water Based ◽  
Better Than

Water-based infrared ray shielding coating, that is, nanometer metal oxide is added to the water-based paint, which has anti-IR features without affecting the transparency of the paint. In this paper, the nanometer oxides are prepared by sol-gel method, added into polypropylene sour. In order to improve the infrared ray shielding of the thin film, two kinds of nanometer oxides are added into the polypropylene sour with different volume ratios, the shielding performance of the paint is studied. Experimental results show: in the 8000 ~ 4000cm-1 range, the transmittances of infrared ray is 30% to 75%; in 4000 ~ 400cm-1 range, transmittances decrease significantly; 3% ZnO, 3% Fe2O3, 3% Y2O3, 2% Al2O3 are the best mass ratio of every single nanometer oxide; the infrared shielding rate of Fe2O3 and Y2O3 mixture with the volume ratio of 1 to 4 is better than Fe2O3 and Y2O3 single.

Templating synthesis of metal oxides by an incipient wetness impregnation route and their activities for CO oxidation

2015 ◽  
Vol 39 (12) ◽  
pp. 9380-9388 ◽  
Author(s):  
Haifeng Gong ◽  
Junjiang Zhu ◽  
Kangle Lv ◽  
Ping Xiao ◽  
Yanxi Zhao
Keyword(s):  
Mesoporous Silica ◽  
Metal Oxides ◽  
Co Oxidation ◽  
Sol Gel ◽  
Incipient Wetness Impregnation ◽  
Gel Method ◽  
Sol Gel Method ◽  
Incipient Wetness ◽  
Templating Synthesis

Co3O4 templated from mesoporous silica show stable and better activity for CO oxidation than that synthesized by the traditional sol–gel method.

Nanometer SrTiO3-Supported Ni-Based Catalyst in the Reaction of CO2 Reforming CH4 to Syngas

2010 ◽  
Vol 105-106 ◽  
pp. 819-822
Author(s):  
Chun Feng Wang ◽  
Hua Zhi Gu ◽  
Hao Chen
Keyword(s):  
Catalytic Activity ◽  
Sol Gel ◽  
Impregnation Method ◽  
Co2 Reforming ◽  
Gel Method ◽  
Sol Gel Method ◽  
Citrate Process ◽  
Lower Temperature ◽  
Supported Ni ◽  
Xrd And Tem

Superfine nanometer SrTiO3 with size of near 50-60nm was prepared by citrate process and sol-gel method. XRD and TEM characterizations indicate that sol-gel method is appropriate to prepare high-purity powders at far lower temperature than other methods. The Ni-based catalysts were prepared by using SrTiO3 powder as support through impregnation and sol-gel method. These catalysts were applied to the reaction of CO2 reforming CH4 to synas and showed high activity. The catalytic activity of Ni-based catalyst is investigated by reaction temperature, the method of support preparation, and the method of catalyst preparation; It shows that the catalyst possesses higher catalytic activity with the increasing of temperature; and the catalytic rate is near 90% at 973 K; and the catalyst show higher catalytic activity when support is prepared by sol-gel method than by citrate process; and the catalyst shows better catalytic activity when catalyst is prepared by sol-gel method than by impregnation method.

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