POS7-0681
Hydroxyl-Controlled MOF–808@Silica-based Aerogel Hybrid Catalysts for Recyclable CO2 Cycloaddition
Topic
S7. Innovations in Polymeric Composites: From Design and Processing to Industrial Applications
When and Where
Sep 30, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Heesuk KIM
Jinhye BAE
Presenter(s)
chaeyeon Lee (INHA University)
Co-Author(s)
Abstract
Aerogel supports can improve the dispersion of metal–organic frameworks (MOFs) and alleviate mass transfer limitations. However, most MOF-supported catalysts rely on physical attachment, which often leads to MOF leaching and catalytic deactivation during recycling. In this study, the interfacial binding strength was enhanced by tuning the –OH content of the aerogel to induce chemical bonding between the MOF and the support. Such chemical anchoring suppresses structural degradation and catalyst leaching during repeated use while maintaining the accessibility of active sites and efficient mass transport.
As a result, the decrease in catalytic yield during recycling was reduced with increasing –OH content. However, excessive –OH groups led to an overly dense aerogel network, which hindered diffusion and reduced the accessibility of catalytic sites during repeated reactions. Consequently, the VTMS aerogel exhibited a rapid decline in yield from the fourth cycle. In contrast, the VMDMS-co-VTMS aerogel with optimized –OH content showed the best balance between catalytic activity and recyclability. This study demonstrates that controlling the –OH content of aerogel supports is an effective strategy for improving catalyst durability and highlights their potential for industrial applications as highly reusable catalytic systems.
As a result, the decrease in catalytic yield during recycling was reduced with increasing –OH content. However, excessive –OH groups led to an overly dense aerogel network, which hindered diffusion and reduced the accessibility of catalytic sites during repeated reactions. Consequently, the VTMS aerogel exhibited a rapid decline in yield from the fourth cycle. In contrast, the VMDMS-co-VTMS aerogel with optimized –OH content showed the best balance between catalytic activity and recyclability. This study demonstrates that controlling the –OH content of aerogel supports is an effective strategy for improving catalyst durability and highlights their potential for industrial applications as highly reusable catalytic systems.
