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Microstructural development of porou...

Mottern, Matthew L.

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Microstructural development of porous materials for application in inorganic membranes.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Microstructural development of porous materials for application in inorganic membranes./
Author:	Mottern, Matthew L.
Description:	156 p.
Notes:	Adviser: Henk Verweij.
Contained By:	Dissertation Abstracts International68-08B.
Subject:	Chemistry, Inorganic. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3279799
ISBN:	9780549206170

Microstructural development of porous materials for application in inorganic membranes.
Mottern, Matthew L.

Microstructural development of porous materials for application in inorganic membranes. - 156 p.

Adviser: Henk Verweij.

Thesis (Ph.D.)--The Ohio State University, 2007.

Molecular separations can be achieved with minimum energy requirements when employing selective membranes. Inorganic membranes exhibit desirable properties, such as chemical inertness, high strength and permeable, in aggressive environments. The optimization and characterization of layered, asymmetric inorganic membranes is detailed in this text.

ISBN: 9780549206170Subjects--Topical Terms:

517253
Chemistry, Inorganic.

Microstructural development of porous materials for application in inorganic membranes.
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005 20110517
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020 $a 9780549206170
035 $a (UMI)AAI3279799
035 $a AAI3279799
040 $a UMI $c UMI
100 1 $a Mottern, Matthew L. $3 1263769
245 1 0 $a Microstructural development of porous materials for application in inorganic membranes.
300 $a 156 p.
500 $a Adviser: Henk Verweij.
500 $a Source: Dissertation Abstracts International, Volume: 68-08, Section: B, page: 5410.
502 $a Thesis (Ph.D.)--The Ohio State University, 2007.
520 $a Molecular separations can be achieved with minimum energy requirements when employing selective membranes. Inorganic membranes exhibit desirable properties, such as chemical inertness, high strength and permeable, in aggressive environments. The optimization and characterization of layered, asymmetric inorganic membranes is detailed in this text.
520 $a Defect free membrane supports are prepared by vacuum driven filtration of aqueous pH 2.0 HNO3 stabilized suspensions of AKP30 alpha-Al 2O3 powder. The permeability and strength of the supports was found to improve while preserving sufficiently low surface roughness by targeting coarsening of the microstructure, driven by surface migration, during sintering.
520 $a Highly permeable membrane carriers/supports are prepared from coarse alpha-Al 2O3 particles (>1 pm) by familiar colloidal approaches with weakly stabilized suspensions. The cost price of the carriers is decreased and sufficient strength achieved with low temperature phosphate bonding. Allowing the weakly stabilized and unhindered suspensions to settle prior to vacuum filtration allows for generation of a microstructure that is graded with respect to particle size. The carrier is highly permeable and has excellent surface morphology for subsequent deposition of thin films.
520 $a Site-specific milling of electron transparent foils with a focused ion beam and the subsequent analysis of those foils by TEM reveal incorporated agglomerates and interfacial cracking in state-of-the-art gamma-alumina membranes. Purification of the Boehmite precursor sols to break down and remove agglomerates results in a uniform particle size distribution, which results in a much improved membrane homogeneity and adhesion. gamma-Alumina's improved microstructure aids in enhanced water purification.
520 $a Permeation porometry (PP) is used to investigate the connective pore-size distribution of asymmetric meso-porous membranes. PP has been proposed as a means to detect the occurrence of membrane pinholes; however, it is found that artifacts in the desorption isotherm are misinterpreted as pinholes. The artifacts are caused by a combination of chemical diffusion though the cyclohexane pore-blocking liquid in the membrane, and gradual removal of cyclohexane from the support.
520 $a The development of textured indium-tin oxide thin films is used to demonstrate how techniques such as rapid thermal processing can be implemented to decrease the cycle time and improve the homogeneity of thin film inorganic membranes prepared by wet chemical methods.
590 $a School code: 0168.
650 4 $a Chemistry, Inorganic. $3 517253
650 4 $a Engineering, Chemical. $3 1018531
690 $a 0488
690 $a 0542
710 2 $a The Ohio State University. $3 718944
773 0 $t Dissertation Abstracts International $g 68-08B.
790 $a 0168
790 1 0 $a Verweij, Henk, $e advisor
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3279799