Modern Chemistry & Applications

Xiao-Ning Zhang

Publications

• Research Article
  Study of Loading SO₄ ^2- on Sb-SnO₂ Nanocrystal and its Calcination Temperature to Make Solid Superacid SO₄ ^⊕/Sb-SnO₂
  Author(s): Xuejun Zhang, Xiao-Ning Zhang, Qin-Qin Ran, Han-Mei Ouyang, Hui Zhong and Han TaoXuejun Zhang, Xiao-Ning Zhang, Qin-Qin Ran, Han-Mei Ouyang, Hui Zhong and Han Tao
  
  SO4 2-/SnO2 were reported to be a solid superacid with an acid strength equal to that of SO4 2-/ZrO2. But papers concerning the SO4 2-/SnO2 catalyst have been quite few, because of difficulty in preparation of the oxide gels from its salts SnCl4. A highly dispersed light yellow powder, Sb-SnO2 nanocrystal, was obtained by the synthesis method of “P-CNAIE” and the drying method of “AD-IAA”. The Sb doping made the energy gap of nano-crystalline SnO2 narrower. A saturated solution of ammonium sulfate was dropped into organic solutions containing a fixed amount of Sb-SnO2 nano-powders in different ratio in order to load Sb-SnO2 powder with ammonium sulfate. This method has an outstanding advantage that is the loading ratio of (NH4)2SO4 to Sb-SnO2 can come to very high and no free water causes the aggregation of Sb-SnO2 nano powder. The methods of Differential Scann.. View More»
  DOI: 10.4172/2329-6798.1000135

  Abstract PDF