Microchanneled ceramic membrane

Figure 8.2 Planar microchanneled ceramic membrane Syngas flows over the exterior of each membrane while th flows in internal channels inside each membrane ...

Nylon, PTFE, or ceramic membranes formed within a microchannel can be used also as a catalyst support [98]. The most of the demonstrated reactions involved two liquid phases and separated aqueous from an organic phase. 

Besides the abovementioned advantages, ceramic hollow-fiber membranes unveil further superiorities over other ceramic membranes. In addition to a substantially higher surface area/volume ratio due to the smaller radius, the unique microchannels inside the membrane wall play an important role in lowering mass transfer resistance and elevate the accessible geometric and specific surface areas. Such a structure is formed due to the concurrence of several process phenomena during the membrane fabrication, which is different from the conventional ram-extrusion-based process where only a simple symmetric structure can be delivered. 

The book then continues with a review of the current methods and development of fabrication processes for inorganic membrane, and Section II starts with a review of ceramic hollow-fiber membrane fabrication and application. Ceramic hollow-fiber membranes, sometimes called capillary or microtubular membranes, are relatively new types of ceramic membranes compared with planar and tubular counterparts. They have a high surface-area-to-volume ratio, with unique microchannels that have led to innovative applications in separation and catalytic reaction technologies. Chapter 10 introduces the fundamental principles of fabricating microstructured ceramic hollow-fiber membranes and discusses the processing parameters and their influence on the microstructures of the fabricated membranes. Chapter 11 deals with the fabrication of ceramic hollow fibers used as a support for energy conversion... 

Vladisavljevic, G.T., Lambrich, U., Nakajima, M., and Schubert, H., Production of O/W emulsions using SPG membranes, ceramic a-Al203 membranes, microfluidizer and a microchannel plate — a comparative study. Colloid Surface A, 232 (2-3), 199-207, 2004. 

A distinctive feature of microreactors is the microchannels for fluid flow. MMRs are mainly characteristic of such microchannels with anchored catalysts for reactions and miniature membranes to perform separation, which are formed on the porous ceramic or metal supports. Based on the configuration and architecture of the reactor, MMRs can be classified into two categories plate type and tubular type. 

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