镧改性磷酸铝介孔分子筛的合成及表征

The Synthesis and Characterization of Mesoporous Aluminophosphate Molecular Sieves Modified by La

以十八胺为模板剂,导向剂法合成磷酸铝镧介孔分子筛。.采用电感耦合等离子体质谱(ICP-MS)、红外光谱(FT-IR)、N2吸附-脱附、NH3程序升温脱附(NH3-TPD)、小角度X射线衍射分析(XRD)等方法对所得样品的组成、结构和性质进行了表征。结果表明,镧修饰磷酸铝介孔分子筛与修饰前相比,比表面积略有降低,酸量和酸强度有所增强。

Aluminophosphate mesoporous molecular sieves modified by La was synthesized by structure-director in non-water system using C18NH2 as template.The compose and structure of aluminophosphate mesoporous molecular sieves was characterized by Inductively Coupled Plasma Mass Spectrometry（ICP-MS,infrared spectroscopy（FT-IR）,N2 adsorption-desorption,NH3chemisorption（NH3-TPD）,XRD and so on.The results show that aluminophosphate mesoporous molecular sieve modified by La has slightly lower surface area,larger acid amount and acid strength compared with the sample unmodified.