Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

PP-III-24analysis and the specific surface (area) was measured by BET etc. The considered methodpermits deposition of thin (1-10 μm) layers of Pd on the complex-surface membranes used inthe catalytic reactors.The work exemplifies designs of catalytic reactors with an integrated membrane moduleand compares their properties with the traditional reactors with a fixed catalyst bed.Catalytic membrane reactors, having small dimensions, provide high power efficiency(≥ 80%), good dynamic characteristics, low temperature of hydrocarbon conversion,generation of high-purity hydrogen during one step, and conversion exceeding the equilibriumvalue.Thus, a methane conversion of ~100 % can be obtained in a catalytic membrane reactor at~500 °С. The generated hydrogen does not contain СО and can be utilized in low-temperaturefuel cells. The reactors with integrated membrane modules for separation of hydrogen fromthe reaction mixture and feeding of oxygen into the reaction zone provide an eight timeshigher hydrogen output than the traditional tubular reactors. The authors review themathematical models of the reactors using membrane hydrogen feeding and present somemodeling data. The prospects of catalytic membrane integrated reactors in hydrogen energyand in transport vehicles are analyzed [2, 3]. The work includes more than 90 references.References1. D. Ogden, Great Expectations. В мире науки, 1 (2007) 69-75.2. J. Romm, A.A. Frank, Hybrid cars, В мире науки, 2 (2007) 82-86.3. R.E. Stoll, F. von Linde, Hydrogen – what are the costs?, Hydrocarbon processing, December (2000) 42-46.349