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Porous anodic alumina microreactors for production of hydrogen from ammonia
Author(s) -
Ganley Jason C.,
Seebauer E. G.,
Masel Richard I.
Publication year - 2004
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.10078
Subject(s) - microreactor , hydrogen production , catalysis , ruthenium , chemical engineering , anhydrous , ammonia , materials science , yield (engineering) , hydrogen , fabrication , anodizing , aluminium , inorganic chemistry , chemistry , metallurgy , organic chemistry , medicine , alternative medicine , pathology , engineering
The synthesis and properties are described of a ruthenium‐impregnated anodic aluminum catalyst for use in microreactors for the production of hydrogen from an ammonia feed. The catalyst structure was synthesized using microelectric discharge machining to create a series of 300 × 300‐μm posts on an aluminum substrate. The posts were anodized to yield a 60‐μm covering of anodic alumina, with an average surface area of 16 m 2 /gm and an average pore size of 50 nm. Ruthenium metal was dispersed on the alumina using conventional wet impregnation. A 0.9 × 0.9‐cm reactor containing 250 posts decomposed 95% of anhydrous ammonia at 650°C to yield 15 sccm of hydrogen. A possible application of these microreactor fabrication methods is hydrogen generation for fuel cells in mobile power production. 2004 American Institute of Chemical Engineers AIChE J , 50:829–834, 2004