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
The complex fluoride BaLiF3 and BaLiF3∶Ce3+ nanocrystals were synthesized in cetyltrimethylammonium bromide（CTAB）/2-octanol/water microemulsion systems.XRD analysis shows that the products were single phase and XPS...The complex fluoride BaLiF3 and BaLiF3∶Ce3+ nanocrystals were synthesized in cetyltrimethylammonium bromide（CTAB）/2-octanol/water microemulsion systems.XRD analysis shows that the products were single phase and XPS analysis shows the oxygen content was low.The result of ESEM confirms that the average size of the BaLiF3 nanocrystals was 28 nm in diameter.The emission peak of the BaLiF3∶Ce3+ nano-particles synthesized by microemulsion shows obvious blue shift in comparison with that of BaLiF3∶Ce3+ synthesized by the reaction at a high temperature and full width at half maximum（FWHM） of emission band was broaden.展开更多
The coating process of TiH2 particles with SiO2 layers, and the effect of the coating layer on hydrogen release characteristic of TiH2 powders were studied experimentally. The gelation rate of silicic acid is an impor...The coating process of TiH2 particles with SiO2 layers, and the effect of the coating layer on hydrogen release characteristic of TiH2 powders were studied experimentally. The gelation rate of silicic acid is an important factor for controlling the surface morphologies of coating layers. When the concentration of SiO2-3 is about 0.5 mol/L, the condensation rate of silicic acid is appropriate for the formation of a homogeneous and dense coating membrane. The results of hydrogen release at 700 ℃ show that TiH2 particles coated with silicon dioxide layers can efficiently delay the starting time of hydrogen release of TiH2 powders to 60100 s.展开更多
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.
文摘The complex fluoride BaLiF3 and BaLiF3∶Ce3+ nanocrystals were synthesized in cetyltrimethylammonium bromide（CTAB）/2-octanol/water microemulsion systems.XRD analysis shows that the products were single phase and XPS analysis shows the oxygen content was low.The result of ESEM confirms that the average size of the BaLiF3 nanocrystals was 28 nm in diameter.The emission peak of the BaLiF3∶Ce3+ nano-particles synthesized by microemulsion shows obvious blue shift in comparison with that of BaLiF3∶Ce3+ synthesized by the reaction at a high temperature and full width at half maximum（FWHM） of emission band was broaden.
文摘The coating process of TiH2 particles with SiO2 layers, and the effect of the coating layer on hydrogen release characteristic of TiH2 powders were studied experimentally. The gelation rate of silicic acid is an important factor for controlling the surface morphologies of coating layers. When the concentration of SiO2-3 is about 0.5 mol/L, the condensation rate of silicic acid is appropriate for the formation of a homogeneous and dense coating membrane. The results of hydrogen release at 700 ℃ show that TiH2 particles coated with silicon dioxide layers can efficiently delay the starting time of hydrogen release of TiH2 powders to 60100 s.
