Dual phase membranes for CO2 separation in power generation (DualCO2) (completed)

DualCO2 aims to develop a novel membrane concept for Carbon Capture and Storage (CCS).

Dense membranes consisting of a molten carbonate ion conductor and a solid ceramic phase conducting electrons are selectively permeable to CO2 and may in principle be used for CO2 separation. The objective of DUALCO2 is to determine the transport mechanisms and kinetics that facilitate permeation of CO2 through such dual phase ceramic membranes.

Photo: Niklas Lello

About the project

DUALCO2 seeks to determine transport mechanisms of dual phase membranes by operating the membranes in selected operating conditions enabling to screen effect of pressure, steam, pO2, pH2 and pCO2 on flux and stability.

This is a first time ever pioneering work requiring specific competences and tools brought in by the selected partners. The project plan is defined to tackle step-wise these ambitious objectives by developing necessary knowledge on materials bulk property down to the microscopic scale, on interface interaction between functional ceramic and molten salts, and surface, interface interaction with environment (multi-component gas streams, steam, pressure effect). Dedicated tools and procedures for probing and testing the produced membranes will be developed, thereby creating an advanced laboratory for these membranes.

In order to tackle these ambitious objectives, SINTEF and two collaborators from research centres in France and the USA will combine their expertise and know-how in DUALCO2. They are chosen based on their world leading expertise in ion conducting materials (UiO, coordinator of the project), molten carbonate media (Michel Cassir from LECIME), gas separation membranes and process development (Balu Balachandran from ANL, and SINTEF). This complementary partnership brings the required competences and tools necessary to complete this first time ever pioneering work. An important aspect of the DUALCO2 project is thus the bridge created between the fields of advanced ceramic and molten salts science. It is thus expected that the gathering of Norwegian and worldwide experts in these fields will create decisive impact on the science underpinning the development of dual phase membrane technologies. The project educates one Postdoc candidate having the possibility to increase his/her competences with world leading experts.


The main objective of DUALCO2 is to determine transport mechanisms of dual phase membranes both at the microscopic scale by identifying chemical reactions and species involved in the molecular separation and ionic transport, and at the reactor scale, by operating the membranes in selected operating conditions enabling to screen effect of pressure, steam, pO2, pH2 and pCO2 on flux and stability.

The secondary objectives of the project are i) the development of membranes with tailored characteristics for screening of properties, ii) the study of study of transport properties with the development of specific tools for electrical measurement, iii) the evaluation of membrane performance in operation and iv) the evaluation of membrane integration in processes.


DualCO2 is carried out in cooperation between Stiftelsen SINTEF, Balu Balachandran (ANL) and Michel Cassir (LECIME), with the University of Oslo as project leader.


The project is funded by The Research Council of Norway through the CLIMIT programme, project number 207841.



Tags: Ion conducting materials, Molten carbonate media, Gas separation membranes
Published July 13, 2012 2:18 PM - Last modified Aug. 2, 2021 1:56 PM


Project leader:
Truls Norby

Admistrative Officer:
Xuemei Cui
+47 22 84 06 64

Gaustadalleen 21
NO-0349 Oslo
Phone: +47 22840664