催化学报

催化学报 ›› 2010, Vol. 31 ›› Issue (7): 776-780.

• 研究论文 • 上一篇    下一篇

离子液中磷酸铝方英石的低温合成及表征

徐仁顺, 张维萍, 韩秀文, 包信和   

  1. 中国科学院大连化学物理研究所催化基础国家重点实验室, 辽宁大连 116023
  • 收稿日期:2010-07-25 出版日期:2010-07-25 发布日期:2010-07-25

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

PDF

799

被引次数

4

摘要： 在溴化 1-丁基-3-甲基咪唑离子液体中, 于低温 80 °C 反应 30 min 即可制得结晶完好的磷酸铝方英石. 详细考察了有机胺和 HF 的加入量、反应原料磷铝比和反应时间等对合成固体磷酸盐骨架结构的影响. 粉末 X 射线衍射和高分辨固体核磁共振结果表明, 合成的方英石晶体为 α 晶相, 磷铝物种大部分位于分子筛骨架上, 并以四配位的形式通过 Al–O–P 键相连.

关键词: 离子热合成, 磷酸铝, 方英石, 固体核磁共振, 离子液体

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