The invention relates to a method for preparing a catalyst with thermal-
instability material carrier by using low-temperature
plasma and an application of the catalyst, and the method comprises the following steps: impregnating thermal-
instability material with
metal salt; directly loading the thermal-
instability material carrying the
metal salt into a
plasma discharger; vacuumizing the interior of the
plasma discharger, then introducing plasma
discharge gas, maintaining the pressure of the gas at 30-200Pa, utilizing a high-
voltage power supply to apply 200-5000V
direct current or alternatingcurrent to two ends of an
electrode for enabling the
discharge gas to
discharge, and reducing or decomposing the
metal salt with the formed plasma for 5-120 minutes without damaging the structure of the thermal-instability material so as to obtain the required catalyst finally. The catalyst with a thermal-instability material carrier, which is prepared from plasma, has the advantages of large output, good catalytic activity and the like, and the particle size of
active components can be controlled easily. The adverse
thermal effect and the series damages to the structure of the material with the
thermal instability under high temperature can be avoided, so that the
active components are fine and small in particles, uniform in distribution, high in purity and good in dispersivity.