The preparation and characterization of alumina-coated pyrophyllite-diatomite composite support layers
详细信息 查看全文
- 作者：Jang-Hoon Ha ; hjhoon@kims.re.kr" class="auth_mail" title="E-mail the corresponding author ; Sujin Lee ; Syed Zaighum Abbas Bukhari ; Jongman Lee ; In-Hyuck Song
- 关键词：Alumina coating layer ; Alumina support layer ; Pyrophyllite-diatomite composite support layer ; Pore characteristics ; Microfiltration
- 刊名：Ceramics International
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：43
- 期：1
- 页码：1536-1542
- 全文大小：2705 K
文摘
Porous ceramic membranes are a current research focus because of their outstanding thermal and chemical stabilities. Recent research has utilized inexpensive natural materials such as pyrophyllite and diatomite to reduce the expense of these porous ceramic membranes. However, insufficient data exist for microfiltration applications using pyrophyllite-based membranes. We compared the measured membrane properties of alumina-coated alumina support layers and alumina-coated pyrophyllite-diatomite composite support layers. These experiments were used to determine whether we could effectively reduce the average pore size with acceptable water permeability by controlling the thickness of the alumina coating layer. The membrane properties of the alumina-coated alumina support layers and alumina-coated pyrophyllite-diatomite composite support layers were examined using scanning electron microscopy, mercury porosimetry, and a dead-end microfiltration system.