MANUFACTURING METHOD FOR CARBON BASED MULTI-COMPOSITE METAL-OXIDE NANOCATALYSTS SUPPORT VIA MELT-INFILTRATION PROCESS AND CARBON BASED MULTI-COMPOSITE METAL-OXIDE NANOCATALYST SUPPORT THEREOF

摘要

PURPOSE: A carbon based multi-composite metal oxide nano catalyst carrier and a production method thereof are provided to show high reactivity and high stability preventing coagulation between particles in case of a high-temperature catalytic reaction as active metal catalyst particles are uniformly carried onto a metal oxide and a remaining carbon carrier for scaffold in a high concentration. CONSTITUTION: A carbon based multi-composite metal oxide nano catalyst carrier production method comprises the following steps; a formation step which forms mixed powder by fusing metal-oxide salt-hydrate for a catalyst, metal-oxide salt-hydrate for a scaffold, and a porous carbon molding frame; a melt infiltration step which melts and impregnates the metal-oxide salt-hydrate for an active catalyst and the metal-oxide salt-hydrate for the scaffold into the carbon molding frame by melting and impregnating at a temperature around the melting point of the mixed metal-oxide salt-hydrate; a drying step which dries the mixed power which is melted and impregnated; and a removal and impregnating step which removes the carbon molding frame before sintering the mixed powder which is melted and impregnated at a high temperature, and impregnating the active metal-oxide particles into a metal oxide for the scaffold and remaining carbon by resolving the metal-oxide salt-hydrate for the active catalyst and the metal-oxide salt-hydrate for the scaffold. High temperature sintering is performed at a temperature ranged 300-650 deg. C for 1- 24 hours. [Reference numerals] (AA) Melt-infiltration; (BB) Amorphous salt complex dipped in porous carbon; (CC) High temperature sintering under the atmospheric condition; (DD) Removal of a carbon molding frame, Decomposition of salt; (EE) Oxidized metal particle(alumina, zirconia,..) functioning as a scaffold; (FF) Active particle; (GG) Remaining carbon