Synthesis and characterization of a Sb(v)-containing polyoxomolybdate serving as a catalyst for sulfoxidation

2018 ◽  
Vol 47 (24) ◽  
pp. 8070-8077 ◽  
Author(s):  
Jingkun Lu ◽  
Yaping Wang ◽  
Xinyi Ma ◽  
Yanjun Niu ◽  
Vikram Singh ◽  
...  

A Sb-containing Anderson-based polyoxomolybdate cluster, [(CH3)4N]4H8[Na5Sb3(Sb2Mo12O57)]·17H2O [1; (CH3)4N+ = TMA+], has been successfully synthesized by using an aqueous solution method and structurally characterized.

2011 ◽  
Vol 306-307 ◽  
pp. 404-409 ◽  
Author(s):  
Jian An Liu ◽  
Mei Mei Zhang ◽  
Yan Fei Zhang ◽  
Shu Jiang Liu

Nano-hexaferrite SrFe12O19 has been prepared using the aqueous solution method. The structure and magnetic properties of SrFe12O19 have systematically been investigated by X-ray diffraction (XRD), Thermo gravimetric (TG), Fourier transform infrared spectroscopy (FTIR), Transmission Electron Microscopy (TEM), as well as Vibrating Sample Magnetometer (VSM). The XRD and TEM results showed that the samples are composed of SrFe12O19 nano-particles which are on average 70×50nm in dimensions when treated at 1200°C for 2 hours. The magnetic properties indicated that the saturation magnetization and the intrinsic coercivity were 48 Am2/kg and 506KA/m, respectively. The aqueous solution method is generally applicable to produce the nano-hexaferrite SrFe12O19 and is proved to be a promising method for fast synthesis of nanometer materials using nitrate.


2017 ◽  
Vol 744 ◽  
pp. 475-479 ◽  
Author(s):  
Sittiporn Punyanitya ◽  
Rungsarit Koonawoot ◽  
Warangkul Punyanitya

Bone hemostatic biomaterials were prepared with different compositions of rice starch (RS) powder and glycerin-base soap. The glycerin soap was composed of liquid glycerol:KOH:stearic acid by aqueous solution method. RS powders (10, 20, 40, and 60 wt %) was added to the purified glycerin soap. The physical properties and degradation of the obtained samples were evaluated. The samples were characterized by scanning electron microscopy (SEM), degree of swelling (DS), moisture content and degradation. An addition of RS powder increased absorbability property, the smoothness, whiteness and could be smear easily on the surface. The results of optimized condition have shown the samples of 20 wt% RS powder had the highest DS of 0.91 ± 0.25 for 90 minutes, the moisture content of 0.43 ± 0.21 % and the degradability of 69.95± 1.50 % for 48 hours. Our results concluded that the samples were sufficient physical properties for use as substitute, and more degradable than bone wax.


2004 ◽  
Vol 132 (1-2) ◽  
pp. 213-218 ◽  
Author(s):  
Padikkasu Periasamy ◽  
Hyun-Soo Kim ◽  
Seong-Hwan Na ◽  
Seong-In Moon ◽  
Joong-Cheol Lee

Sign in / Sign up

Export Citation Format

Share Document