Chinese Journal of Catalysis ›› 2010, Vol. 31 ›› Issue (7): 776-780.

• Articles • Previous Articles     Next Articles

Low-Temperature Synthesis and Characterization of AlPO-Cristobalite in Ionic Liquid

XU Renshun, ZHANG Weiping*, HAN Xiuwen, BAO Xinhe*   

  1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
  • Received:2010-07-25 Online:2010-07-25 Published:2010-07-25

Abstract: AlPO-cristobalite was prepared at low temperature of 80 °C for 30 min in the [bmim]Br ionic liquid. The effects of reaction conditions, such as the amount of organic amine and HF acid, the P/Al ratio, and reaction time, were investigated in detail in the ionothermal synthesis. Powder X-ray diffraction and high-resolution solid-state NMR show that the resultant sample is α-AlPO-cristobalite, and most of the Al and P species are located on the framework and connected by Al–O–P tetrahedron.

Key words: ionothermal synthesis, aluminophosphate, cristobalite, solid state nuclear magnetic resonance, ionic liquid