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H3PO4-i-C3H7OAl-H2NCH2CH2NH2-HOC
Synthesis and Characterization of AlPO4-12 Molecular Sieve from H3PO4-i-C3H7OAl-H2NCH2CH2NH2-HOCH2CH2OH System
【摘要】 以乙二胺为模板剂,采用H3PO4-i-C3H7OAl-H2NCH2CH2NH2-HOCH2CH2OH非水体系,首次合成了AlPO4-12分子筛。研究了反应物配比、酸碱度及磷源、铝源等水热晶化条件对产物物相的影响,用XRD、IR、SEM及TG-DTA等对产物进行了表征,对非水体系生成的AlPO4-12中有机模板剂乙二胺的化学环境进行了研究,认为乙二胺在晶体中以两种环境存在:一部分与骨架作用力较弱;另一部分与骨架以较强的氢键相作用。
【Abstract】 Hydrothermal crystallization of aluminophosphate molecule sieve(ALPO4-12)was carried out from H3PO4-i-C3H7OAl-H2NCH2CH2NH2-HOCH2CH2OH system,Using aluminum triisopropoxide and phosphorous acid (85 wt%)as the aluminum and phosphoroussources.The influences of some main factors(pH,the ratio of P2O5/Al2O3 and the aluminum and phosphorous sources,etc.) on the resulting structure were studied.The product was characterized by means of X-ray powder diffraction,scanning electron mieroscope,infrared spectroscopy,differential analysis and thermogravimetric analysis. The results of investigating the crystallization of AlPO4-12 from non-aqueous system were preliminarily summarized.We found that the organic template,H2NCH2CH2NH2,had two different kinds of environments:one interacted with the skelton by weak hydrogen-bond,the others interacted with the skelton by strong hydrogen-bond.
【Key words】 Aluminophosphate molecule sieve; AlPO4-12; Non-aqueous system; Hydrothermal synthe3sis; Characterization.;
- 【文献出处】 高等学校化学学报 ,CHEMICAL RESEARCH IN CHINESE UNIVERSITIES , 编辑部邮箱 ,1995年03期
- 【分类号】O627
- 【下载频次】48