Perovskite membranes hollow fiber

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. 

Wei Y, Tang J, Zhou L, Li Z, and Wang H. One end-dead perovskite hollow fiber membranes for high-puiity oxygen production from ambient air. Chem. Eng. J. 2012 183 473-482. 

H.H. Wang, S. Werth, T. Schiestel, A. Caro, Perovskite hollow-fiber membranes for the production of oxygen-enriched air. Angewandte Chemie-Intema-tional Edition 2005, 44 (42), 6906-6909. 

Whereas most perovskite material have operation temperatures above 800 °C, our BCFZ perovskite hollow fiber membrane could be successfully used for oxygen separation from air between 400 and 500 °C (Figure 16.6). As Figure 16.6 shows, the oxygen permeation flux increases from 0.03 to 0.45 mL cm min as the temperature rises from 400 to 500 °C. However, in... 

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... 

Figure 16.22 Use of NO as oxygen source in synthesis gas production CH4 conversion (O) and CO selectivity (O) in the CPOM on the shell side of the BCFZ perovskite hollow fiber membrane as a function of temperature. Experimental details Flow rate on the core side = 30 mL min (3 mL min NO + 27 mL min He), Flow rate on the shell side = 50 mL min (8 mL min CH4 + 5 mL min H2O -h 1 mL min Ne -h 36 mL min He), 0.86 cm membrane area, 0.5 g of the Ni-SR catalyst as packed bed on the shell side. ...

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. 

Figure 18.5 Effect of the surface modification by 98% sulfuric acid for 40 min on the LSCF perovskite hollow fiber membranes. (A) Fiber wall after modification (B) surface before modification (Q surface morphology after modification.

Wang, H., Tablet, C. and Caro, J. (2008) Oxygen production at low temperature using dense perovskite hollow fiber membranes. Journal of Membrane Science, 322, 214-217. 

Tablet, C., Grubert, G Wang, H. et al. (2005) Oxygen permeation study of perovskite hollow fiber membranes. Catalysis Today, 104,126-130. 

Tan, X., Shi, L., Hao, G. et al. (2012) Lao,7Sro.3Fe03 g a perovskite hollow fiber membranes for oxygen permeation and methane conversion. Separation and Purification Technology, 96,89-97. 

Tan, X., Wang, Z. and Li, K. (2010) Effects of sintering on the properties of Lao,6Sro,4Coo,2Feo 803 perovskite hollow fiber membranes. Industrial Engineering Chemistry Research, 49, 2895-2901. 

Figure 7.10 The concept of simultaneous production of H2 and synthesis gas hy combining H2O decomposition with POM in a Perovskite 02-permeable hollow-fiber membrane.

Wang, Z Yang, N., Tam, X and Li, K. (2008) Preparation and oxygen permeation properties of highly asymmetric Lao,6Sro,4Coo jFeo.gOs-s perovskite hollow-fiber membranes. Ind. Eng. Chem. Res., 48, 510-516,... 

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-... 

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. 

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

Di Felice, L., Middelkoop, V., Anzoletti, V., Snijkers, F., van Sint Aimaland, M., and Gallucci, F. (2014) New high temperature sealing technique and permeability data for hollow fiber BSCF perovskite membranes. Chem. Eng. Process. Process Intensif. doi 10.1016/j.cep.2014.12.004. 

Poisoning effect of SO2 on the oxygen permeation behavior of Lao.6Sro.4Coo.2Feo,803 8 perovskite hollow fiber membranes. / Membr. Set, 455,... 

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. 

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