Facile High-Yield Solvothermal Deposition of Inorganic Nanostructures on Zeolite Crystals for Mixed Matrix Membrane Fabrication

被引：106

作者：

Bae, Tae-Hyun ^{[1
]}

Liu, Junqiang ^{[1
]}

Lee, Jong Suk ^{[1
]}

Koros, William J. ^{[1
]}

Jones, Christopher W. ^{[1
]}

Nair, Sankar ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2009年 / 131卷 / 41期

关键词：

MAGNESIUM-HYDROXIDE NANOPARTICLES; GAS SEPARATION; PARTICLE SURFACES; GLASSY-POLYMERS; NANORODS; PRECIPITATION;

D O I：

10.1021/ja907435c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Separation membranes with high performance can potentially be made by incorporating zeolites (or other nanoporous molecular sieves) in polymeric materials. However, the fabrication of technologically viable membranes has been hampered by poor adhesion between the inorganic crystals and the polymer and by inadequate dispersion of the inorganic particles. We report a facile, high-yield, and inexpensive solvothermal deposition process to prepare roughened inorganic Mg(OH)(2) nanostructures on zeolite (MR) crystal surfaces in a controlled manner. The functionalized zeolite crystals result in high-quality "mixed matrix" membranes, wherein the zeolite crystals are well-adhered to the polymeric matrix. Substantially enhanced CO2 and CH., gas permeation characteristics were observed in mixed matrix membranes containing up to 35 wt % of solvothermally modified MFI crystals. Gas permeation measurements on membranes containing nonporous uncalcined MFI revealed that the performance enhancements are indeed due to significantly enhanced MFI-polymer adhesion and distribution of MFI crystals.

引用

页码：14662 / +

页数：4

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