화학공학소재연구정보센터
학회 한국공업화학회
학술대회 2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO))
권호 25권 1호
발표분야 [국제협력] 우수외국인연구자세션
제목 Selective conversion of carbon dioxide into long-chain alfa olefins
초록 Considerable progress has been made in the conversion of carbon dioxide (CO2), which is highly thermodynamically stable, into liquid hydrocarbons using metal oxide/ zeolite composite catalysts. Herein, we report a bifunctional iron aluminum oxide (FeAlOx) catalyst that directly converts CO2 into C5+ hydrocarbons with an overall selectivity of 77.0% and CO2 conversion of 20.2% at a H2/CO2 ratio of 1:1. Notably, the selectivity for linear α-olefins (LAOs) was 52.4%, accounting for 78.4% of the total C4+ olefins. At a high H2/CO2 ratio of 3:1, the yield of C5+ hydrocarbons was 19.7%. The reducible magnetite (Fe3O4) phase, which contains surface oxygen vacancies, facilitated the reverse-water−gas-shift (RWGS) reaction to form CO via CO2 hydrogenation, and subsequent C−C coupling over Hägg iron carbide afforded lower olefins (C2−C4=). Long-chain LAOs were then formed on the surface of amorphous aluminum oxide (AlOx) via the readsorption of C2−C4=.
저자 muhammad kashif khan, 김재훈
소속 성균관대
키워드 CO2 conversion; alfa olefins
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