A new ionic sieve has been prepared in a process of saturating a substrate with Pb(Ac)_2 solution followed by thermodynamic recrystallization.The substrate is silica gel on which β-type titanium is introduced.The ion...A new ionic sieve has been prepared in a process of saturating a substrate with Pb(Ac)_2 solution followed by thermodynamic recrystallization.The substrate is silica gel on which β-type titanium is introduced.The ionic sieve possesses a specific selectivity for Pb(Ⅱ)ions in the aqueous solution with mul- ticomponent composition.The aquatic chemistry of Pb(Ⅱ),the amphoteric surface of the ionic sieve and the behaviour of Pb(Ⅱ)at the solid-liquid interface are discussed.The ionic sieve can be used to remove lead from various aquatic systems.展开更多
AlPO-11 molecular sieve with AEL structure was ionothermally synthesized using ionic liquid solvent as medium. The effects of ionic liquid amount, synthesis time and temperature were investigated. The structure and ch...AlPO-11 molecular sieve with AEL structure was ionothermally synthesized using ionic liquid solvent as medium. The effects of ionic liquid amount, synthesis time and temperature were investigated. The structure and characteristics of molecular sieve samples were characterized by X-ray diffraction(XRD),scanning electron microscopy (SEM), thermo gravimetric analysis(TGA). The results indicate that AlPO-11 molecular sieve could be synthesized by 1-ethyl-3-methylimidazolium bromide ([Emim]Br) ionic liquid as both the solvent and template.展开更多
基金the National Natural Science Foundation of China.
文摘A new ionic sieve has been prepared in a process of saturating a substrate with Pb(Ac)_2 solution followed by thermodynamic recrystallization.The substrate is silica gel on which β-type titanium is introduced.The ionic sieve possesses a specific selectivity for Pb(Ⅱ)ions in the aqueous solution with mul- ticomponent composition.The aquatic chemistry of Pb(Ⅱ),the amphoteric surface of the ionic sieve and the behaviour of Pb(Ⅱ)at the solid-liquid interface are discussed.The ionic sieve can be used to remove lead from various aquatic systems.
文摘AlPO-11 molecular sieve with AEL structure was ionothermally synthesized using ionic liquid solvent as medium. The effects of ionic liquid amount, synthesis time and temperature were investigated. The structure and characteristics of molecular sieve samples were characterized by X-ray diffraction(XRD),scanning electron microscopy (SEM), thermo gravimetric analysis(TGA). The results indicate that AlPO-11 molecular sieve could be synthesized by 1-ethyl-3-methylimidazolium bromide ([Emim]Br) ionic liquid as both the solvent and template.
