Membranes dense ceramic

It is well known that dense ceramic membranes made of the mixture of ionic and electron conductors are permeable to oxygen at elevated temperatures. For example, perovskite-type oxides (e.g., La-Sr-Fe-Co, Sr-Fe-Co, and Ba-Sr-Co-Fe-based mixed oxide systems) are good oxygen-permeable ceramics. Figure 2.11 depicts a conceptual design of an oxygen membrane reactor equipped with an OPM. A detail of the ceramic membrane wall... 

Balachandran, U. et al., Dense ceramic membranes for partial oxidation of methane to syngas, Appl. Catal, 133, 19, 1995. 

Balachandran, U., Development of Dense Ceramic Membranes for Hydrogen Separation, Proceedings of2005 U.S. DOE Hydrogen Annual Merit Review Meeting, Arlington, VA, May 2005. 

Balachandran, U., T.H. Lee, S. Wang, G. Zhang, and S.E. Dorris, Current Status of Dense Ceramic Membranes for hydrogen Separation, 27th International Technical Conference on Coal Utilization and Fuel Systems, Clearwater, FL, March 2002. 

Lin, J.Y.S., Proton conducting dense ceramic membranes for hydrogen separation, Annual Progress Report, U.S. DOE Contract DE-FG26-00NT40818, December 2002. 

Data obtained at NETL for hydrogen flux through the ANL-1 dense ceramic membranes were correlated to yield a flux expression. The flux of hydrogen through these... 

The quantity of ambipolar conductivity is widely used for the analysis of -> electrolytic permeability of -> solid electrolytes, caused by the presence of electronic conductivity. Other important cases include transient behavior of electrochemical cells and ion-conducting solids, dense ceramic membranes for gas separation, reduction/ oxidation of metals, and kinetic demixing phenomena [iv]. In most practical cases, however, the ambipo-... 

Refs. [i] Rickert H (1982) Electrochemistry of solids. An introduction. Springer, Berlin [ii] Schmalzried H (1963) Z phys Chem 38 87 [in] Bouwmeester HJM, Burggraaf A) (1996) Dense ceramic membranes for oxygen separation. In Burggraaf A), Cot L (eds) Fundamentals of inorganic membrane science and technology. Elsevier, Amsterdam, pp 435-... 

Extensively studied is oxygen permeation through dense ceramic membranes (e.g. perovskhes). Temperatures > 600 °C are applied. Here, oxygen splits at the surface and is transited as 0 . Porous membranes include porous polymer films (cellulosics, polyamides) as well as amorphous inorganic materials (alumina, silica). 

Bouwmeester HJM and Burggraaf AJ. Dense ceramic membranes for oxygen separation. In Bruggraaf AJ and Cot L, eds. Fundamentals of Inorganic Membrane Science and Technology. Amsterdam Elsevier, 1996, pp. 435-515. 

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