Perovskite hollow fiber membrane reactor

Wang, h., Tablet, C., Schiestel, T., Werth, S. and Caro, J. (2006) Partial oxidation of methane to syngas in perovskite hollow fiber membrane reactor. Catalysis Communications, 7, 907-912. 

So far, there are only a few reports of perovskite hollow fiber membrane reactors in the oxidative coupling of methane. Tan and Li studied the catalytic perovskite Lao.6Sro.4Coo.2Feo.8G3 (LSCF) hollow fiber membrane as... 

Oxidative coupling of methane in a BCFZ perovskite hollow fiber membrane reactor. Ind. Eng. Chem. Res., 49,... 

The status and fiitine trends in the development and application of novel reactors equipped with solid electrolyte based membrane materials was analyzed in a review article [105]. BaCo Fe Zr Oj perovskite hollow-fiber membrane reactor was used with permeable and passivated surface segments to enable controlled oxygen insertion into the reactor. The reduced oxygen concentration offered higher ethene selectivity. At low and moderate ethane conversion, the performance of the membrane reactor was on par with the best catalysts used in cofeed mode. The ethene yield was comparable with that of the industrial steam cracking process. However, the reaction temperature was 100°C lower [106],... 

Tan X, Pang Z, Gu Z and Liu S (2007), Catalytic perovskite hollow fiber membrane reactors for methane oxidative couphng ,/Memhr Sci,Wl, 109-114. 

The second way to increase the membrane area per volume of reactor is adopting the hollow fiber configuration. For example, in case of perovskite membranes the membrane flux is generally quite low and the hollow fiber configuration is quite interesting. The main investigators of hollow fiber membrane reactors are summarized in Table 33.2. 

Kleinert et al. studied, for example, POM in a hollow fiber membrane reactor. The perovskite membranes used by the authors were produced from Ba(Co, Fe, Zr)Os 5 (BCFZ) powder via the phase inversion spinning technique [12]. A tube-... 

Caro, J., Caspary, K., Hamel, C., etal. (2007). Catalytic Membrane Reactors for Partial Oxidation Using Perovskite Hollow Fiber Membranes and for Partial Hydrogenation Using a Catalytic Membrane Contactor, Ind. Eng. Chem. Res., 46, pp. 2286-2294. 

An interesting work on perovskite membrane reactors has been reported by Liao et al, who prepared a U-shaped BCFT based membrane and tested it for methane conversion. The membrane has been prepared by phase inversion after spinning a hollow fiber membrane [73]. The picture of the setup used in their work is shown in Figure 33.21. 

Whereas a catalytic membrane reactor on an industrial scale is still an aim that is difficult to realize, the implementation of a perovskite-based plant for the production of oxygen-enriched air or of air separation seems to be more feasible. By Vente et the membrane geometries of single-hole tubes, multichannel monoliths, and hollow-fibers for air separation are evaluated. 

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