摘要
以乙二胺为模板剂，采用Ｈ_３ＰＯ_４－ｉ－Ｃ_３Ｈ_７ＯＡｌ－Ｈ_２ＮＣＨ_２ＣＨ_２ＮＨ_２－ＨＯＣＨ_２ＣＨ_２ＯＨ非水体系，首次合成了ＡｌＰＯ_４－１２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ＡｌＰＯ_４－１２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。
Hydrothermal crystallization of aluminophosphate molecule sieve(ALPO_4-12)was carried out from H_3PO_4-i-C_3H_7OAl-H_2NCH_2CH_2NH_2-HOCH_2CH_2OH system,Using aluminum triisopropoxide and phosphorous acid (85 wt%)as the aluminum and phosphoroussources.The influences of some main factors(pH,the ratio of P_2O_5/Al_2O_3 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 AlPO_4-12 from non-aqueous system were preliminarily summarized.We found that the organic template,H_2NCH_2CH_2NH_2,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.
出处
《高等学校化学学报》
CSCD
北大核心
1995年第3期338-341,共4页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
磷酸铝
分子筛
非水体系
水热合成
结构
乙二胺
Aluminophosphate molecule sieve
AlPO_4-12
Non-aqueous system
Hydrothermal synthe3sis
Characterization.
