Hydrogen Separation Membrane Systems

Emonts et al. described the combination of the resulting 50-kW reformer with a hydrogen separation membrane system (see also Section 7.4) and a 1-kW Siemens PEM fuel cell to give a complete fuel processor/fud cdl system [50]. The breadboard system still required a footprint of 3 m. A flow scheme of the system along with a photograph is provided in Figure 9.3 3 kg of a copper/zinc oxide catalyst were... 

Roark, S.E., Mackay, R., and Sammells, A.F., Hydrogen Separation Membranes for Vision 21 Energy Plants, Proceedings of the International Technical Conference on Coal Utilization Fuel Systems, 27(1), 101, 2002. 

Palladium is one of the six transition metals that are also known as the platinum metals and has high hydrogen solubility to make it attractive as a hydrogenation catalyst and hydrogen separation membrane. The early works of the palladium as a hydrogen separation membrane is mostly concentrated on palladium foils. An excellent review on hydrogen permeation in palladium and palladium hydrogen systems was presented in detail by Lewis [1]. 

De Lorenzo L, Kreutz TG, Chiesa P, Williams RH (2008) Carbon-free hydrogen and electricity from coal options for syngas cooling in systems using a hydrogen separation membrane reactor. J Eng Gas Turbines Power 130 031401-1... 

Tokyo Gas Co., Ltd. (TGC) has developed a 40 Nm /h-class membrane reformer system with the world s highest efficiency (a value of 81.4%). The company has demonstrated the use of the hydrogen produced to refuel fuel cell vehicles (FCV), together with CO2 capture at the hydrogen station. An advanced hydrogen separation membrane module consisting of a palladium alloy membrane on a structured porous catalyst, which can be used to produce a membrane reformer that is more compact and less expensive, has also been developed. This chapter introduces the development of these two membrane reformer technologies. 

Brown, L, Wu, J., Nelson, M., Bowden, M. Kemmitt, T. (2010) Hydrogen Separation Membranes from Nanostructured Alumina Ceramics Pp 1-16 in "Nanostructured Materials and Systems" Ceramic Transactions of the American Ceramic Society, Volume 214, Eds Sanjay Mathur Hao Shen, ISBN 978- 470-88128-6,168 p>ages, July 2010. 

Additionally, there are a number of useful electrochemical reactions for desulfurization processes (185). Solar—thermal effusional separation of hydrogen from H2S has been proposed (188). The use of microporous Vicor membranes has been proposed to effect the separation of H2 from H2S at 1000°C. These membrane systems function on the principle of upsetting equiUbrium, resulting in a twofold increase in yield over equiUbrium amounts. 

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. 

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