Volume 88 Issue 39 | p. 48 | Concentrates
Issue Date: September 27, 2010

Alkali Metal Aids Catalysis

The water-gas shift reaction can be catalyzed at lower cost by platinum aided by an alkali-metal promoter
Department: Science & Technology
Keywords: water-gas shift reaction, catalysis, alumina, silica, platinum

The water-gas shift reaction can be catalyzed by platinum dispersed on an inert support aided by an alkali-metal promoter, with Pt-alkali-Ox(OH)y as the key catalytic species, reports a group led by Maria Flytzani-Stephanopoulos of Tufts University and Manos Mavrikakis of the University of Wisconsin, Madison (Science 2010, 329, 1633). The reaction, which converts H2O and CO to H2 and CO2, is used to remove contaminant CO from H2 produced during fuel reforming. To replace air-sensitive . . .

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