Organizations & People
and Biophysical Chemistry Division (I)
Chemistry Division (II)
Title: Standardization of methods for the characterization
of inorganic membranes
Chair: Ed Yi Hua Ma
Members: L. Cot, J.A. Dalmon, Imre Dekany, Douglas
Fain, John Falconer, J.H. Fendler, Hubert Fleming, George R. Gavalas,
W.S. Winston, Eiichi Kikuchi, William J. Koros, Y.S. Lin, Vladimir
Linkov, Shin-ichi Nakao, Richard D. Noble, John Pellegrino, J.D.R.
Ramsay, Jesus Santamaria, Theodore T. Tsotsis, J. Douglas Way, Nanping
Xu - to be completed by addition of members from both industry
Remarks: part of the Strategic Initiative on
Completion Date: project abandoned
To indicate the practical capabilities of physical
and physico-chemical techniques for, specifically, the characterization
of inorganic membranes.
- To recommend an efficient methodology for the determination of
inorganic membrane properties of practical importance.
- To draw attention to unresolved or unaddressed issues which deserve
In the past decade, there has been a rapid growth in the number
of publications dealing with synthesis and characterization of inorganic
membranes. Furthermore, the increased industrial interest has been
demonstrated by the recent formation of two multi-consortiums to
develop inorganic membranes for partial oxidation of methane to
synthesis gas. Such a large increase in the interest in the development
of a new generation of inorganic membranes is, at least, due in
part to their excellent chemical, thermal and mechanical stability.
We can certainly expect a wide variety of applications of inorganic
membranes, along with polymeric membranes, to be developed in the
decades to come. Therefore, the development of standard characterization
procedures for the evaluation and comparison of the important characteristics
of inorganic membranes is essential to facilitate information exchange
among researchers and industrial practitioners and to enhance the
The project contents are:
Organization of a half-day workshop to address
issues and techniques involved in the characterization of inorganic
membranes. The format of the workshop will be 5-6 invited lectures
given by experts in the field of inorganic membranes followed
by a panel discussion. > see Progress section
Characterization of physical properties of inorganic
membranes including, but not limited to, porosity, pore size distribution,
membrane thickness and streaming potential. The emphasis will
be on the well-established general techniques such as mercury
porosimetry, adsorption and desorption isotherms, calorimetric
determinations, SEM, TEM, NMR and AFM.
Transport property characterization by dynamic
techniques including rejection measurements, liquid/gas methods
(e.g., bubble point, liquid expulsion permporometry), liquid/liquid
displacement porosimetry, liquid/gas permeance measurements and
Development of standards for protocols, data analysis
and reporting formats.
Development of standards for experimental conditions
for characterization including temperature, pressure, standard
gases and single and mixture gas measurements.
In addition to the organization of two workshops,
the following additional steps will be taken to carry out the project.
Forming a Working Party consisting of leading
experts from both academia and industry;
Providing a summary on currently published characterization
Conducting surveys among academic and industrial
researchers to obtain additional information on characterization
techniques and suggestions for new techniques;
Selecting a preliminary list of suggested standardized
characterization methods by the Working Party;
Distributing the preliminary list to the people
working in the field for comments and suggestions;
Formulating the final recommendations by the Working
Party to IUPAC for review and approval.
A half-day workshop was held in conjunction with the
6th International Conference on Inorganic Membranes in Montpellier,
France, June 26-30, 2000.
Last update: 21 April 2005
Page last modified 21 April 2005.
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