Hydrothermal synthesis of AlPO4-5 type zeolitic materials by using aluminum dross as a raw material
Hydrothermal synthesis of AlPO4-5 type zeolitic materials by using aluminum dross as a raw material
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DOI：
10.1016/j.jeurceramsoc.2005.06.022
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发表时间：
2006-01-01
影响因子：
5.7
通讯作者：
Shibata, J
中科院分区：
文献类型：
--
作者：
Murayama, N;Okajima, N;Shibata, J
水热法合成了一种大孔径磷酸铝缩合物类沸石材料AIPO（4）-5。通过使用铝浮渣作为原料进行。三乙胺（TEA）用作AIPO（4）-5合成的结构导向剂（SDA）。对所得反应产物的晶体结构、表面织构和比表面积等物理性质进行了研究。以铝浮渣为原料，在453-473 K水热条件下反应3 h，可合成AIPO（4）-5，同时生成无孔的AIPO（4）盐。通过SEM照片观察，所得AIPO（4）-5的晶体为六方晶体。希望在约823 K的温度下热处理反应产物以除去TEA。当热处理温度超过973 K时，AIPO（4）-5的晶体结构转变为无孔磷酸铝。反应产物在823 K热处理前后的比表面积分别为18和360 m2/g。(c)2005爱思唯尔有限公司保留所有权利。
The hydrothermal synthesis of AIPO(4)-5, which is one of the large pore size aluminum phosphate condensates like zeolitie materials. was carried out by using aluminum dross as a raw material. Triethylamine (TEA) was used as a structure directing agent (SDA) for AIPO(4)-5 synthesis. Various physical properties such as crystal structure, surface texture and specific surface area were investigated for the obtained reaction product. AIPO(4)-5 can be synthesized from aluminum dross under hydrothermal conditions at 453-473 K for 3 h.AIPO(4) salt as a by-product, which is a non-porous material, is formed at the same time. The crystal of the obtained AIPO(4)-5 is hexagonal as observed by SEM photographs. It is desirable to heat-treat the reaction product at the temperature around 823 K to remove TEA. The crystal structure of AIPO(4)-5 changes to non-porous aluminum phosphate in case of a heat treatment exceeding 973 K. The specific surface areas of the reaction product before and after heat treatment at 823 K are 18 and 360 m(2)/g, respectively. (c) 2005 Elsevier Ltd. All rights reserved.