| 학회 | 한국화학공학회 |
| 학술대회 | 2019년 가을 (10/23 ~ 10/25, 대전컨벤션센터) |
| 권호 | 25권 2호, p.1997 |
| 발표분야 | 촉매 및 반응공학 (Catalysis and Reaction Engineering) |
| 제목 | Linear α-olefin production from CO and CO2 over zinc ferrite catalysts: effect of Na- and K- promoters |
| 초록 | The Paris Agreement on reducing greenhouse gases has drawn a lot of attention in carbon capture and utilization (CCU). Carbon dioxide can be transformed into oxygenates and hydrocarbons through hydrogenation, where a reverse water gas shift (rWGS) is followed by a Fischer-Tropsch (FTS) reaction. We could convert CO2 into linear alpha-olefins (α-olefins), which is one of valuable chemical intermediates. Iron based catalysts are typically known to be active in both rWGS and FTS reaction. Composition of iron species is important in determining the overall catalytic performance, where alkali metals can act as a promoter for each reaction. In this study, we hypothesize that alkali metals affect the reaction rates of CO and CO2 differently. To elucidate this, we synthesized Na- and K-added zinc ferrite catalysts and measured different reaction rates with H2 to CO and CO2 ratio (H2/(CO+CO2)) and CO to CO2 ratio (CO/CO2). We have obtained a maximum α-olefin selectivity (51.5 %) in the range C2-C32 at 63.6% CO conversion and 23.6% CO2 conversion at 340 °C and 2.0 MPa for 200 hours continuous reaction. |
| 저자 | 양선규1, 이성우1, 한승주1, 이관영2, 김용태1 |
| 소속 | 1한국화학(연), 2고려대 |
| 키워드 | 촉매 |
| 원문파일 | 초록 보기 |
