关键词: 化学镀, 钯基, 甲苯, 催化燃烧

Abstract: The FeCrAl fiber supported palladium-based monolithic catalysts without interlayer coating were prepared by the noval electroless plating technique.The synthesized catalysts with different loaded Pd were firstly characterized by scanning electron microscope（SEM），X-ray diffraction（XRD），and energy dispersive spectrometer（EDS）.The results showed that the palladium component can be well enriched on the surface of the FeCrAl fiber substrate，and the main active center of the catalysts was metal Pd crystalline phase.When the palladium loading was 0.3%（mass fraction），the Pd spherical particles with 0.3~0.5 μm could form an uniform distribution and just cover the whole surface of the FeCrAl substrate.Meanwhile，the synthesized catalysts also showed excellent performance of toluene catalytic combustion: the toluene could rapidly burn out at 220 ℃ after light-off at 190 ℃ over the synthesized catalyst，and the catalyst also expressed good catalytic stability.

Key words: electroless plating, Pd-based, toluene, catalytic combustion