Direct decomposition of nitric oxide on bimetallic catalysts: Effect of metals bonding

✍ Scribed by Julia María Díaz Cónsul; Carlos Alexandre Peralta; Juan A.C. Ruiz; Heloise O. Pastore; Ione Maluf Baibich

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 324 KB
• Volume: 133-135
• Category: Article
• ISSN: 0920-5861
• DOI: 10.1016/j.cattod.2007.11.035

✦ Synopsis

Pd-Mo and Mo-Pd bimetallic catalysts supported on Al 2 O 3 -thin-layer-modified SiO 2 and Si-MCM-41 were investigated for the direct decomposition of nitric oxide. The catalysts were prepared from [Pd(acac) 2 ] and [Mo(CO) 6 ]. The Al 2 O 3 /SiO 2 and Al 2 O 3 /Si-MCM-41 supported catalyst surface areas did not change significantly upon metal impregnation. Temperature programmed reduction profiles suggest the presence of large particles that are easily reduced. Consequently, low palladium dispersions were found. All the catalysts studied were active in the NO decomposition reaction, Mo-Pd catalysts being the most selective.