Synthesis of Mesoporous Chromium Aluminophosphate(CrAlPO)via Solid State Reaction at Low Temperature
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2012年第2期
论文作者：刘少友
文章页码：337 - 345
摘 要：Mesoporous chromium aluminophosphate（CrAlPO）was successfully synthesized via solid state reaction（SSR）route at low temperature in the presence of a cationic surfactant cetyltrimethyl ammonium bromide（CTAB）and inorganic sources such as AlCl3·6H2O,CrCl3·6H2O and NaH2PO4·2H2O.Characterizations by means of powder X-ray diffraction（XRD）,N2 adsorption-desorption,high resolution transmission electron microscopy（HR-TEM）,scanning electron micrography（SEM）,energy dispersion spectroscopy（EDS）,thermo-gravimetry（TG）,Fourier transform infrared spectroscopy（FT-IR）,and ultraviolet visible light spectroscopy（UV-Vis）were carried out to understand both the pore characteristics and electron transition route of these obtained materials.The experimental results show that the meso-CrAlPO materials with various Cr/Al molar ratios possess a mesostructure and a specific surface area of 193 to 310 m2 /g corresponding to an average pore size of 5.5 to 2.2 nm,respectively.The maxium content of Cr in meso-CrAlPO materials synthesized via SSR route can achieve 16.7wt%,being significantly higher than that of the meso-CrAlPO prepared via a conventional sol-gel route.Meanwhile,the formation mechanism of the meso-CrAlPO was also proposed.
刘少友
Institute of Applied Chemistry,Kaili UniversityCollege of Chemistry and Chemical Engineering,Hunan University
摘 要：Mesoporous chromium aluminophosphate（CrAlPO）was successfully synthesized via solid state reaction（SSR）route at low temperature in the presence of a cationic surfactant cetyltrimethyl ammonium bromide（CTAB）and inorganic sources such as AlCl3·6H2O,CrCl3·6H2O and NaH2PO4·2H2O.Characterizations by means of powder X-ray diffraction（XRD）,N2 adsorption-desorption,high resolution transmission electron microscopy（HR-TEM）,scanning electron micrography（SEM）,energy dispersion spectroscopy（EDS）,thermo-gravimetry（TG）,Fourier transform infrared spectroscopy（FT-IR）,and ultraviolet visible light spectroscopy（UV-Vis）were carried out to understand both the pore characteristics and electron transition route of these obtained materials.The experimental results show that the meso-CrAlPO materials with various Cr/Al molar ratios possess a mesostructure and a specific surface area of 193 to 310 m2 /g corresponding to an average pore size of 5.5 to 2.2 nm,respectively.The maxium content of Cr in meso-CrAlPO materials synthesized via SSR route can achieve 16.7wt%,being significantly higher than that of the meso-CrAlPO prepared via a conventional sol-gel route.Meanwhile,the formation mechanism of the meso-CrAlPO was also proposed.
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