无定形晶种引导三次生长制备完备性TAPO-5膜

doi:10.15541/jim20140566

无机材料学报 ›› 2015, Vol. 30 ›› Issue (5): 555-560.DOI: 10.15541/jim20140566 CSTR: 32189.14.10.15541/jim20140566

• 研究快报 • 上一篇

无定形晶种引导三次生长制备完备性TAPO-5膜

刘旭光¹，马欣¹，刘勇¹，张宝泉^1,2

(1. 青岛科技大学材料科学与工程学院, 青岛266042; 2. 天津大学化工学院, 化学工程国家重点实验室, 天津 300072)

收稿日期:2014-11-06 修回日期:2014-12-03 出版日期:2015-05-20 网络出版日期:2015-04-28
基金资助:
National Natural Science Foundation of China (21136008); National Ocean Public Project of China (201405008)

Preparation of Perfective TAPO-5 Membrane through Tertiary Growth with Amorphous Seed

LIU Xu-Guang¹, MA Xin¹, LIU Yong¹, ZHANG Bao-Quan^1,2

(1. College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; 2. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China)

Received:2014-11-06 Revised:2014-12-03 Published:2015-05-20 Online:2015-04-28
Supported by:
National Natural Science Foundation of China (21136008); National Ocean Public Project of China (201405008)

摘要/Abstract

摘要：

TAPO-5膜可以通过三次生长法制备。它的完备性与所用晶种以及膜的多晶结构密切相关。393 K下晶化所得无定形晶种有利于引导制备完备性TAPO-5膜。然而, 晶态TAPO-5晶种引导制备的TAPO-5膜存在大量的裂纹(即晶界缺陷), 这破坏了膜的完备性。这些不同结果可以通过SEM、XRD 和单组分气体渗透(He)测试进行说明。它与铺展润湿法所形成的晶种层的不同形式有关。无定形晶种层的典型特征是晶种分散于载体的大孔缺陷中。然而, 晶态TAPO-5将以连续晶种层的形式存在。因此, 无定形晶种更适合引导制备完备性TAPO-5膜。

关键词: 三次生长, 无定形晶种, TAPO-5膜, 铺展润湿法

Abstract:

TAPO-5 membranes were synthesized through a tertiary growth method. Its perfection significantly depends on the adopted seed and itself poly-crystalline structure. Amorphous seed synthesized at a low crystallization temperature (393 K), obviously favors producing the perfective TAPO-5 membrane. TAPO-5 crystal seed, however, induces the growth of its membrane with a larger extent of cracks (i.e., grain boundary defect), destructing itself perfection. Those diverse results are associated with the disparate seeds layers deposited by a spreading-wetting method, and consistently demonstrated by SEM, XRD, and single gas (He) permeation test. A typical feature of the amorphous TAPO-5 seed layer is its dispersive distribution pattern in the macro holes of support. A continuous layer, however, is observed for the TAPO-5 crystal seed layer. The amorphous seed is explained as a prior seed for the perfective TAPO-5 membrane.

Key words: tertiary growth, amorphous seed, TAPO-5 membrane, spreading-wetting method

中图分类号:

TQ174

刘旭光，马欣，刘勇，张宝泉. 无定形晶种引导三次生长制备完备性TAPO-5膜[J]. 无机材料学报, 2015, 30(5): 555-560.

LIU Xu-Guang, MA Xin, LIU Yong, ZHANG Bao-Quan. Preparation of Perfective TAPO-5 Membrane through Tertiary Growth with Amorphous Seed[J]. Journal of Inorganic Materials, 2015, 30(5): 555-560.

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无定形晶种引导三次生长制备完备性TAPO-5膜

Preparation of Perfective TAPO-5 Membrane through Tertiary Growth with Amorphous Seed

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