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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 AlCl_3·6H_2O,CrCl_3·6H_2O and NaH_2PO_4·2H_2O.Characterizations by means of powder X-ray diffraction(XRD),N_2 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 m~2 /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.
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 AlCl 3 · 6H 2 O, CrCl 3 · 6H 2 O and NaH 2 PO 4 · 2H 2 O. 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 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 m ~ 2 / g corresponding to an average pore size of 5.5 to 2.2 nm, respectively. The maxium content of Cr in me so-CrAlPO synthesized via SSR route can achieve 16.7 wt%, being significantly higher than that of meso-CrAlPO prepared via a conventional sol-gel route. However, the formation mechanism of the meso-CrAlPO was also proposed.