| 학회 | 한국화학공학회 |
| 학술대회 | 2011년 가을 (10/26 ~ 10/28, 송도컨벤시아) |
| 권호 | 17권 2호, p.1813 |
| 발표분야 | 재료 |
| 제목 | Mesoporous Polymer as Effective Polyoxotungstate Support for Liquid-Phase Olefin Epoxidation Using H2O2 |
| 초록 | Polyoxotungstate catalysts have attracted much attention in liquid-phase olefin epoxidation using H2O2 as an oxidant. These catalysts are often immobilized on ion-exchange resin and mesoporous silica by ion exchange method for easy separation and recyclability. However, a significant decrease in activity remains after immobilization remains a serious problem. In this work, we showed that polyoxotungstate supported on mesoporous polymer exhibited high catalytic activity with high epoxide selectivity as compared to other supported catalyst (i.e., mesoporous polymer, amberlite). This high catalytic performance was attributed to facile diffusion of the reactants and products in the mesopore. Moreover, the catalysts showed maximum activity at optimized ammonium content. This result indicated that right balance between hydrophobicity and hydrophilicity is required to achieve a good immobilized catalyst. This information would be useful for designing support for immobilization of homogeneous catalyst. |
| 저자 | 조창범, Sanjeev P. Maradur, 유 룡 |
| 소속 | 한국과학기술원 |
| 키워드 | Catalyst immobilization; Mesoporous Polymer; Polyoxotungstate |
| 원문파일 | 초록 보기 |
