Hydrothermal synthesis of AlPO4-5: Effect of precursor gel preparation on the morphology of crystals

被引：14

作者：

Li, Dan ^{[1
,2
]}

Yao, Jianfeng ^{[1
]}

Wang, Huanting ^{[1
]}

机构：

[1] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia

[2] Murdoch Univ, Sch Engn & Informat Technol, Murdoch, WA 6150, Australia

来源：

PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL | 2012年 / 22卷 / 06期

基金：

澳大利亚研究理事会;

关键词：

Aluminophosphate; AlPO4-5; Stirring; Elliptical structure; Crater structure; MOLECULAR-SIEVE; FILMS; SAPO-5; GROWTH;

D O I：

10.1016/j.pnsc.2012.11.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper reports on the effect of precursor gel preparation on the microstructural formation of aluminophosphate-5 (AlPO4-5) molecular sieves in the hydrothermal synthesis. The morphology of AlPO4-5 crystal changed from sphere to ellipse with two symmetrical craters when the aluminophosphate precursor gel was prepared via dropwise addition of acid and TEA under strong stirring, and continuous stirring overnight during the gel aging process. The results also showed that both of well-crystallized spherical and elliptical AlPO4-5 crystals covered by the fibrous crystals could be hydrothermally synthesized at 150 degrees C for 4 h or longer. The average particle size of spherical AlPO4-5 samples was about 35-45 mu m in diameter, whereas the elliptical AlPO4-5 exhibited approximately 13 mu m in width and 15 mu m in length. (c) 2012 Chinese Materials Research Society. Production and hosting by Elsevier Ltd. All rights reserved.

引用

页码：686 / 694

页数：9

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