Three-Dimensional Mesoporous Titanosilicates Prepared by Modified Sol−Gel Method:  Ideal Gold Catalyst Supports for Enhanced Propene Epoxidation

2005 ◽  
Vol 109 (9) ◽  
pp. 3956-3965 ◽  
Author(s):  
A. K. Sinha ◽  
S. Seelan ◽  
M. Okumura ◽  
T. Akita ◽  
S. Tsubota ◽  
...  
2018 ◽  
Vol 5 (1) ◽  
pp. 49-58 ◽  
Author(s):  
Yu.S. Demidova ◽  
I.L. Simakova ◽  
E.V. Suslov ◽  
K.P. Volcho ◽  
N.F. Salakhutdinov ◽  
...  

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.


RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 7179-7187 ◽  
Author(s):  
Wenchao Bi ◽  
Guohua Gao ◽  
Yingjie Wu ◽  
Huiyu Yang ◽  
Jichao Wang ◽  
...  

Novel 3D island-chain structured V2O5/graphene/MWCNT hybrid aerogels are synthesized by a sol–gel method which exhibit enhanced specific capacitance (504 F g−1), large energy density (70 W h kg−1) and outstanding cyclic property (82.9% retention after 32 500 cycles).


2019 ◽  
Vol 7 (47) ◽  
pp. 27041-27047 ◽  
Author(s):  
Xiao-Dong He ◽  
Jia-Ying Liao ◽  
Shuo Wang ◽  
Jun-Ru Wang ◽  
Ze-Hua Liu ◽  
...  

A modified Pechini sol–gel method was developed to synthesize three-dimensional pomegranate-like SbxBi1−x@C composites as anode materials for advanced potassium-ion batteries.


2011 ◽  
Vol 335-336 ◽  
pp. 368-371 ◽  
Author(s):  
Yu Tie Bi ◽  
Hong Bo Ren ◽  
Bo Wei Chen ◽  
Lin Zhang

The synthesis and characterization of nickel-based aerogel prepared using nickel chloride as the precursor via sol-gel method is described. The addition of the polyacrylic acid as an template to the solution of NiCl2•6H2O can guide the gelation in the reaction to build a three dimensional open structure. The aerogel has been characterized using field emission scanning electron microscopy (FESEM), highresolution transmission electron microscopy (HRTEM), nitrogen adsorption desorption analysis and powder X-ray diffraction (XRD). The results indicate that the nickel-based aerogel has a typical three dimensional structure made up of spherical particles with an open porous network and has high surface area about 192 m2/g, average pore diameter about 40nm. The X-ray diffraction (XRD) patterns show that the aerogel prepared at room temperature belongs to amorphous material. The synthesis of nickel-based aerogel, using polyacrylic acid as an template, is especially unique in our experiment.


2020 ◽  
Vol 268 ◽  
pp. 127592
Author(s):  
Ying Chang ◽  
Penghao He ◽  
Zhishun Wei ◽  
Yuan Chen ◽  
Huihu Wang ◽  
...  

2013 ◽  
Vol 756-759 ◽  
pp. 150-153 ◽  
Author(s):  
Tao Tao Zhang ◽  
Jing Huang ◽  
Rui Zhi Zhang ◽  
Peng Yan Mao ◽  
Pan Fang

We study the preparation of thin film on the glass substrate with the method of dip coating, which is based on methanol and MTMS as raw materials, making them form silica aerogel by sol-gel method. Scanning electron micrographs (SEM) show that such a film possesses a porous three-dimensional network structure. The high porosity and low refractive index determine that the transmittance rate can reach 90%. The prepared film also exhibited apparent hydrophobic effect, with the contact angle of 156.3°and rolling angle of less than 10°. The transparency and superhydrophobic of the film make it suitable as multifunctional coatings for many application fields including solar cells, cellphones and a variety of electron device.


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

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

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