122nd General Meeting of the KCS

Type Symposium
Area Recent Trends in Catalysis Based on Nano-Porous Inorganic Materials
Room No. Room 323
Time FRI 15:30-:
Code INOR3-3
Subject Localized basification of the mesopore walls as a route to high dispersion of supported-metal catalyst
Authors Changbum Jo, Jangkeun Cho1, Ryong Ryoo2,*
Center for Nanomaterials and Chemical Reactions, Inha University, Korea
1Department of Chemistry, Korea Advanced Institute of Science and Technology, Korea
2Center for Nanomaterials and Chemical Reactions, Institute for Basic Science, Korea
Abstract Development of a simple and scalable protocol for the high dispersion of supported metal nanoparticles is an important aspect in catalysis. Most water-soluble inorganic salts become insoluble when adding base into the aqueous solution; therefore, we have attempted to induce localized precipitation of inorganic species onto the mesopore walls via surface basification with –(Me4N+)(OH-) or –NH2 groups. Herein, we demonstrate that a high content (~30 wt.%) of Ni, Cu, SnO nanoparticles can be highly dispersed on the mesopore walls functionalized with –(Me4N+)(OH-) or –NH2 groups. As a result of high dispersion, the metal nanoparticles supported on mesoporous zeolites exhibited a high catalytic activity in CO2 methanation reaction. This strategy can be generalized to various supports, such as MFI zeolite nanosponges, a MCM-48 mesoporous silica, and a mesoporous alumina. We believed that the basic-surface induced precipitation would be an effective way to increase the metal-surface sites, and consequently, advanced catalytic function in a number of applications.
E-mail jochangbum@inha.ac.kr