Synthesis and characterization of a family of amine-intercatalated lamellar aluminophosphates from alcoholic system

被引:60
作者
Gao, QM
Chen, JS
Xu, RR
Yue, Y
机构
[1] JILIN UNIV,DEPT CHEM,KEY LAB INORGAN HYDROTHERMAL SYNTHESIS,CHANGCHUN 130023,PEOPLES R CHINA
[2] ACAD SINICA,WUHAN INST PHYS,WUHAN 430071,PEOPLES R CHINA
关键词
D O I
10.1021/cm9602611
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A family of lamellar aluminophosphates designated APO-Ln (L stands for lamellar and n = 6, 8, 10, 12, the number of carbon atoms for the occluded template molecules) was synthesized from a mixture of phosphoric acid, aluminum triisopropoxide, ethylene glycol and an unbranched primary alcohol in the presence of an amine as the structure-directing template. The compounds were characterized by X-ray powder diffraction, scanning electron microscopy, MAS NMR spectroscopy, differential thermal, and thermogravimetric analyses. The inorganic layers of APO-Ln are composed of PO4, AlO4, and AlO6 structural units, and the ratio of the octahedral Al to the tetrahedral Al in the as-synthesized compounds is about 1:1. APO-Ln exhibit a distinct weight loss when treated at elevated temperatures, and upon dehydration they adsorb a considerable amount of water. Dehydration-rehydration for APO-Ln materials is reversible with the dehydrated samples containing almost only tetrahedrally coordinated aluminum.
引用
收藏
页码:457 / 462
页数:6
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