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Synthesis and characterization of HMS mesoporous molecular sieves containing heteroatoms
Pages: 80-82,86,118
Year: Issue:  3
Journal: Journal of Xi'an Petroleum Institute(Natural Scien

Keyword:  heteroatom HMSmesoporous molecular sievesynthesischaracterization;
Abstract: HMSmolecular sieves containing Cr,Ti and Al heteroatoms with mesopore structure are synthesized using silica acid te-traethyl ester (TEOS) as Si source, chromium( Ⅲ ) nitrate (Cr(NO3)3·9H2O) as Cr source, sodium aluminateCNaAlO2)as Al source and tetrabutyl orthotitante (TBOT) as Ti source as well as dodecylamine (DDA) as template agent. The products are characterized by means of powder X-ray diffraction (XRD), ultraviolet-visible diffuse reflectance spectrum, N2 adsorption - desorption and transmission electron microscopy (TEM). The results show that Cr, Ti and Al atoms are inlaid in HMS framework, the pore structure of these heteroatoms molecular sieves presents earthworms-shape and the pore diameter is about 4nm.
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