化工进展

• 材料科学与技术 • 上一篇    下一篇

微球状ZIFs材料(TIF-5Zn)的制备及稳定性

康小珍,石 琪,董晋湘   

  1. 太原理工大学精细化工研究所,山西 太原 030024
  • 出版日期:2013-07-05 发布日期:2013-07-05

Preparation and stability of microspheric ZIFs (TIF-5Zn) 

KANG Xiaozhen,SHI Qi,DONG Jinxiang   

  1. Research Institute of Special Chemicals,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China
  • Online:2013-07-05 Published:2013-07-05

摘要: 以5,6-二甲基苯并咪唑和咪唑为配体,Zn(NO3)2为金属盐,采用水作为溶剂合成了一种具有GIS拓扑结构的沸石咪唑酯骨架(ZIFs)材料TIF-5Zn。研究了反应溶剂(水、甲醇、甲醇-氨水)对材料形貌的影响以及材料的化学稳定性和热稳定性,并用XRD、SEM、TG及CHN元素分析等手段对材料进行了表征。结果表明:溶剂对其形貌有显著的影响,在单一溶剂水或甲醇中只能形成不规整的微/纳米颗粒聚集体,而在甲醇-氨水混合溶剂中得到了形貌规整的微球状TIF-5Zn,它是由亚微米粒子组装而成的多级微米球结构。

关键词: 微球状, 沸石咪唑酯骨架, 制备, 稳定性

Abstract: Using 5,6-dimethylbenzimidazole and imidazole as ligands,Zn(NO3)2 as metal salt and water as solvent,ZIFs material TIF-5Zn with GIS topology was synthesized by solvothermal method. The influence of solvent on morphology and the stability of TIF-5Zn were investigated with XRD,SEM,TG and CHN. The results showed that solvent had great influence on morphology of the samples. Water or methanol as a single solvent generated irregular shaped aggregates of micro or nanocrystals,while based on the mixed solvent of aqueous ammonia (NH3?H2O) and methanol (CH3OH),highly ordered TIF-5Zn could be obtained. This multi-level microspheres consisted of ordered assembly of numerous submicron particles.

Key words: microspheres, ZIFs, preparation, stability

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