双模板剂合成铁硅介孔分子筛的结构表征

以十二烷基硫酸钠（SDS）和辛基酚聚氧乙烯醚（TX—100）为模板剂，正硅酸乙酯（TEOS）为硅源，乙二胺为碱性介质，当n（TEOS）：n（Fe（NO3）3）：n（SDS）：n（H2NCH2CH2NH2）：n（H2O）=1：0．008：0．10：0．05：2．2：120合成Fe—Si介孔分子筛，通过XRD、IR、N2吸附脱附、NH3-TPD等方法对分子筛的晶体结构和表面物性进行了研究，结果表明，合成的分子筛具有典型的六方介孔结构特征，孔径分布较窄，具有较大的比表面积和较强的酸性。

Synthesis, characterization of Fe-Si mesoporous molecular sieves using two surfactants as co-template

Mesoporous silica molecular sieves containing iron was synthesized under hydrothermal conditions using sodium dodecyl sulfate (SDS) and octyl phenolpolyoxyethylene ether(TX-100) surfactants as co-template and ethyl silicate(TEOS) as silica source in ethylenediamine . The optimum processing properties were n (TEOS): n(Fe ( NO3) 3): n (SDS): n ( H3NCH2CH2NH2): n (H2O) =1: 0.008:0.10:0.05:2.2:120.Fe-Si mesoporous molecular sieve was characterized using several techniques, e.g. powder X-ray diffraction (XRD), N2-adsorption-desorption, Fourier transform-infra red spectroscopy (FT-IR) and NH3 adsorption-desorption(NH3-TPD). XRD and N2-adsorption-desorption studies indicated that the calcined materials had the standard hexagonal structure and highly specific surface area. NH3-TPD and TG-DTA spectra indicated that the all samples that have been prepared are surface strong acid sites and high thermal stability.