引用本文:
Rong Chun XIONG, Xiao Dong LEI, Gang WEI. Controlling Pore Size and its Distribution of γ-Al2O3 Nanofiltration Membranes[J]. Chinese Chemical Letters,
2003, 14(9): 969-972.
Citation: Rong Chun XIONG, Xiao Dong LEI, Gang WEI. Controlling Pore Size and its Distribution of γ-Al2O3 Nanofiltration Membranes[J]. Chinese Chemical Letters, 2003, 14(9): 969-972.
Citation: Rong Chun XIONG, Xiao Dong LEI, Gang WEI. Controlling Pore Size and its Distribution of γ-Al2O3 Nanofiltration Membranes[J]. Chinese Chemical Letters, 2003, 14(9): 969-972.
Controlling Pore Size and its Distribution of γ-Al2O3 Nanofiltration Membranes
摘要:
The preparation process of γ-Al2O3 nanofiltration membranes were studied by N2 absorption and desorption test and retention rate vs thickness gradient curve method.It was found that template and thermal treatment were key factors for controlling pore size and its distribution.Under the optimized experimental conditions, the BJH (Barret-Joyner-Halenda) desorption average pore diameter, BJH desorption cumulative volume of pores and BET (Brunauer-Emmett-Teller) surface area of obtained membranes were about 3.9 nm, 0.33 cm3/g and 245 m2/g respectively, the pore size distribution was very narrow.Pore size decreased with the increasing of thickness and no evident change after the dense top layer was formed.The optimum thickness can be controlled by retention rate vs thickness gradient curve method.
English
Controlling Pore Size and its Distribution of γ-Al2O3 Nanofiltration Membranes
Abstract:
The preparation process of γ-Al2O3 nanofiltration membranes were studied by N2 absorption and desorption test and retention rate vs thickness gradient curve method.It was found that template and thermal treatment were key factors for controlling pore size and its distribution.Under the optimized experimental conditions, the BJH (Barret-Joyner-Halenda) desorption average pore diameter, BJH desorption cumulative volume of pores and BET (Brunauer-Emmett-Teller) surface area of obtained membranes were about 3.9 nm, 0.33 cm3/g and 245 m2/g respectively, the pore size distribution was very narrow.Pore size decreased with the increasing of thickness and no evident change after the dense top layer was formed.The optimum thickness can be controlled by retention rate vs thickness gradient curve method.
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Key words:
- Nanofiltration
- / γ-Al2O3 membrane
- / membrane pore size
- / N2 absorption-desorption test
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